difference between trash pump and mud pump pricelist

Successfully dewatering your pipeline, mining, excavation or industrial construction application requires knowledge of the terrain and environment you’re working in for dewatering with your industrial trash pump to flow seamlessly.

It can be a daunting task to figure out which trash pump is right to remove standing water from your jobsite. Choosing the wrong trash pump for your application can result in weak performance, or even damage to the pump’s internal components.

Before you get started with selecting the right industrial trash pump for your application, you will need to understand the difference between what is referred to as a “semi trash pump” and a trash pump.

In a nutshell, semi-trash pumps can handle smaller debris, whereas trash pumps are designed to handle larger debris. Semi-trash pumps operate similar to centrifugal pumps, but have a larger discharge opening for small debris and sentiments to pass through.

If you’re pumping water that contains larger solids, such as pebbles, stones, leaves and twigs, you will require a trash pump with a larger hose diameter.

The rule of thumb for selecting an industrial trash pump is selecting a model where the hose diameter is twice the diameter of the solids that will be passing through the unit, which is measured in inches. For example, a 3″ trash pump has the capacity to handle solids up to 1 1/2″ in diameter.

Another reason why you will need to determine the kind of terrain you’ll be operating on is because it will help you choose the material of hosing you’ll need with your trash pump.

As mentioned above, selecting the right hose size is one of the most important aspects to consider when choosing the right trash pump for your dewatering needs.

While selecting the correct size of industrial trash pump and hose, and determining the jobsite terrain are some of the most important factors to consider when choosing the right trash pump for your dewatering needs, some other important factors to take into consideration are:

Consider whether it is more cost-beneficial to rent or purchase your trash pump. Need help figuring this out? Read our blog on Should I Rent or Buy My Construction Equipment.

For dewatering applications requiring long continuous run times, choose a trash pump with self priming and long-run time capabilities when left unattended for low risk operation

By carefully taking these factors into consideration, you’ll be able to quickly, successfully and cost-effectively dewater your jobsite with zero downtime.

Axiom Equipment Group’s team has decades of combined experience in equipment rental, sales and service. Working with other internationally accredited organizations, we have the unique ability to provide on-demand products for sale and rent. With our large fleet of new, reliable, well-maintained site equipment, we can meet large project demands quickly and supply quality equipment for smaller projects cost-effectively.

At Axiom Equipment Group, we believe in ZERO DOWNTIME so much that we stand behind it with a unique iron clad promise that combines a reliable equipment fleet with a rapid response program, around-the-clock availability, expert service and a financing option to fit every budget. Gain peace of mind knowing that if your equipment breaks down, we have the inventory to repair and replace it on the fly!

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Determining what materials need to be pumped—e.g., clear water, chemical or dirty water—is the starting point for choosing the right model pump for the application. Most pumps fall into one of these categories:

Most general purpose/de-watering pumps are for moving relatively clear water. Construction—or trash—pumps are used for pumping water contaminated with sticks, leaves, stones and other high solid content. The solids-handling capability of trash pumps allows large-hole-size strainers that are less prone to clogging, to be used.  Multi-purpose pumps move water as well as a variety of approved agricultural and industrial chemicals. Finally, submersible pumps are used for a wide range of residential and commercial sump applications.

Consumers should evaluate the site where the pump will be operated. Factors to consider in the evaluation include: the vertical distance from the surface of the liquid being pumped to the highest point of the discharge hose, the length and material of the hose or pipe, whether a nozzle or sprinklers will be used, and how much discharge volume is needed. Higher elevations also can be a factor in limiting pump performance.

All pumps use basic forces of nature to move a liquid. As the moving pump part (impeller, vane, pistons, diaphragm, etc.) begins to move, air is pushed out of the way. The movement of air creates a partial vacuum (low pressure) which can be filled up by more air or, in the case of water pumps, water. This is similar to sucking on a straw where the mouth creates a partial vacuum.  The liquid is pushed up the straw because of the pressure differences between the inside of the mouth and the atmosphere.

It’s important to keep in mind that engine performance of the operating pump decreases as elevation increases. The higher the elevation, the less air there is available to support combustion. Maximum engine power decreases approximately 3.5 percent per 1,000 feet of elevation gain and, in certain instances, can result in reduced discharge capacity. Additionally, the maximum available suction head will be reduced at higher elevations.

The best predictor of the performance of a centrifugal pump in a specific application is the total dynamic head (or total head), which is the sum of the static suction head, static discharge head, and all additional losses in the system. Losses that should be calculated include, but are not limited to, friction losses due to pipe size, length and material, and losses from sprinklers or a nozzle. The total dynamic head is the actual head on the pump during operation.

Selecting the proper pump can be a challenge. Pump manufacturers typically calculate performance curves using a vacuum gauge on the suction port and a pressure gauge and flow meter connected to the discharge port. For many different total head values, the corresponding discharge capacity is measured. A series of measured data points are then graphed and connected to create the performance curve.

Often times the user will only consider total static head when selecting a pump, but if frictional losses aren’t included in the calculations, it’s possible that pump performance will not meet expectations. The actual discharge performance may be significantly less than predicted by using static head alone due to friction losses in the system.

Performance curves are useful in selecting a particular water pump. When a question regarding the performance of a specific pump must be answered, refer to the pump specifications for the particular model.

Determine how high the pump will sit above the water surface (static suction head). Determine how high the discharge end will be elevated above the pump (static discharge head). Determine what the discharge capacity (gallons per minute) of the pump must be.

Given the total head (suction + discharge), the discharge capacity can be estimated by referring to the performance curve for the specific model of pump.

Pump performance (capacity or pressure) is highest when the pump is operated close to the water’s surface. Increasing the suction head will decrease the total head.  (If the suction head increases [within the maximum suction head limitation], and the discharge head decreases by the same amount, the total head remains the same—so discharge capacity is not affected). Most important, suction head should be kept to the smallest value possible to reduce the likelihood of cavitation (the sudden formation and collapse of low-pressure vapor [bubbles] across the vanes of the impeller).

Mother Nature also plays an important role in how high water can be pushed. Water is heavy and tends to flow back down to its original source. The mechanical energy of the impeller transmits its force against the water coming in contact with it. This force can be measured in psi at the pump discharge. As the pump discharge head increases in height, the pump capacity (GPM) decreases, and the available pressure at the end of the discharge hose (if the flow is stopped or a sprinkler/nozzle is used) also will decrease. At maximum head, the capacity (GPM) will drop to zero, and there will be no pressure available at the end of the hose to run a sprinkler or nozzle.

A liquid moving through a hose creates heat due to the friction of the two surfaces (water against hose). Steel pipe will produce more friction than smooth PVC or vinyl pipe. As the length of the discharge hose increases, the water comes into contact with more hose surface and the inner wall of the discharge hose (in contact with the rushing water) will cause friction to build up. The increase in friction will slow the water, decreasing the discharge capacity.

No matter the job at hand, it is important to purchase a pump that will be reliable day in and day out. Matching your pump spec’s to the job at hand is the best way to ensure longevity. It is also a good idea to monitor any pump you use for best results.

While initial cost is important, also consider operating cost and the lifecycle of the pump. When comparing fuel efficiency, be sure to compare running time and tank size among models.

Self-priming is a term that describes the ability of a pump to create a partial vacuum by purging air from the intake hose and pump casing. Self-priming pumps still require water to be added to the pump casing first to start the priming process.

Always be sure to use a strainer on the end of the suction hose—not using a strainer can result in catastrophic failure. And, if using a different strainer, make sure the holes in the strainer are the same size or smaller than the holes on the strainer included with the pump.  Place the pump as close to the water surface as possible. The less lift required reduces priming time.

Shutting off a pump will allow water to flow out of the suction hose. The pump contains a one-way flapper valve, so water will remain in the pump after shutting off. However, the suction hose will have to re-prime each time the pump is restarted.

The use of a foot valve on the end of the suction hose will prevent water from flowing out of the suction hose if the pump is stopped, reducing the time required for the pump to regain its prime. If you do use a foot valve, make sure it includes a strainer with holes equal to or smaller than the original strainer included with the pump.

Pump performance and increased time required to prime the pump can occur when the volute and impeller wear out. Regular inspection and maintenance of a pump will maintain peak performance.

Also, avoid driving over and collapsing the discharge hose when the pump is operating and/or the hose is full of water (damage can even occur with the pump off, if a nozzle is shut off and the discharge hose is full of water).

After use, the operator should turn off the fuel valve and drain the pump case (flush if pumping salt water or water containing mud or silt). If the pump is going to be stored, refer to the storage procedure in the owner’s manual. It is especially important to add gasoline stabilizer and/or drain the carburetor to prevent fuel system damage due to deteriorated gasoline.

All centrifugal pumps can be deadheaded for a brief period (as a general rule, no more than about five minutes). During this period, the pump pressure will increase to the pump’s maximum rated pressure.  However, deadheading the pump for an extended period of time will cause the water or liquid in the pump to eventually heat up and cause damage to the mechanical seal. Never deadhead a positive displacement pump. This practice can cause severe damage to the pump.

The sudden formation and collapse of low-pressure vapor (bubbles) across the vanes of the impeller. When the surface pressure on a liquid becomes low enough, the liquid will begin to boil (even at room temperature). With centrifugal pumps, cavitation can occur when the suction vacuum becomes great enough to allow water vapor or bubbles to begin forming at the impeller. When this water vapor travels through the rapid pressure increase across the impeller, a large amount of energy is released which can cause impeller damage. Minimizing suction head and using the largest practical suction hose diameter will reduce the likelihood of cavitation. Pump operators should never use a suction hose with a diameter smaller than the pump’s suction port.

A pump that uses centrifugal force to discharge fluid into a pipe, typically by mechanical means such as a rotating impeller held within a volute and pump housing.

A pump that uses positive displacement to discharge a fluid into a pipe by means of a combination of a reciprocating diaphragm and check valve system.

The static suction head plus the additional suction head created by friction from the liquid flowng through the hoses, fittings, etc. Atmospheric pressure enables pumps to lift water. As a result, an atmospheric pressure of 14.7 psi at sea level limits practical dynamic suction head lift to less than approximately 26 feet for any pump (with the amount of head lift decreasing as altitude increases).

The additional pressure or head created at the pump due to the friction of the liquid flowing through the hoses, pipes, fittings, etc. Friction losses always occur when a liquid is flowing through pipes and becomes greater as the length of pipe increases and/or the diameter decreases. Friction losses result in reduced pump output and can be minimized by using the largest and shortest hoses possible. Friction losses are included in dynamic suction and dynamic discharge head.

An impeller is a rotating disk containing vanes coupled to the engine’s crankshaft. All centrifugal pumps contain an impeller. The impeller vanes sling liquid outward through centrifugal force, causing a pressure change. This pressure change results in liquid flowing through the pump.

This is a spring-loaded seal, consisting of several parts, that seals the rotating impeller in the pump case and prevents water from leaking into and damaging the engine. Mechanical seals are subject to wear when pumping water that contains abrasives. They will quickly overheat if the pump is run without filling the pump chamber with water before starting the engine. Also, deadheading the pump for an extended period of time will cause the water or liquid in the pump to eventually heat up and cause damage to the mechanical seal.

Pressure is force per unit area and is usually listed in psi (pounds per square inch). Pressure often is included in pump performance curves. Pressure and head are directly related when referring to pump performance. The pressure exerted (in psi) at the base of a column of water is 0.433 x head (in feet). If you attach a pressure gauge at the base of a pipe measuring 100 feet tall filled with clear water, you would measure 43.3 psi. The maximum pressure (at zero discharge) of any pump can be determined by multiplying the maximum head by 0.433.

Most centrifugal pumps require the pump casing to be filled with water before starting. Self-priming is a term often used to describe pumps that have the ability to purge air from the case and create a partial vacuum, allowing water to begin flowing through the suction hose.

The vertical distance between the pump’s discharge port and the point of discharge, which is the liquid surface if the hose is submerged or pumping into the bottom of a tank.

The volute is the stationary housing enclosing the impeller. The volute collects and directs the flow of liquid from the impeller and increases the pressure of the high velocity water flowing from the vanes of the impeller.

Water hammer is energy transmitted back to the pump due to the sudden stoppage of water flowing from the pump. Water hammer is more likely to occur when using a very long discharge hose. The most common cause of water hammer discharge damage is driving over the discharge hose when the pump is running. If the flow of water at the end of the discharge hose is shut off in less than the critical time, energy is transmitted back to the pump causing a large pressure spike in the pump housing. Water hammer often results in damage to the pump casing. Water hammering can be avoided by (slowly) closing a valve located at the end of the discharge hose.

The AMT General Purpose pumps feature Honda GC 135 or 160 Overhead Cam engines that offer high quality and value. The various models are designed to cover a wide array of applications including Ag, fertilizer, lawn care, dewatering, irrigation, solids handling, etc. All units are portable. Each unit includes two NPT pipe nipples. Pumps are designed for use with non-flammable liquids which are compatible with pump component materials. Cast iron and plastic...

AMT Self Priming Pedestal mounted are designed for direct or belt drive. Specific units are available in Cast 316SS, Aluminum, Cast Iron or Thermoplastic construction material. The units feature 3/8" to 1-1/2" solids handling construction and are fitted with a cast iron bearing housing which contains two or three precision sealed ball bearings depending on specific model. Easy cleanout design by removing casing bolts, permits removal of debris without...

Sprinkler Pump by AMT, Irrigation Pump, Booster pumps feature Investment Cast 316 SS closed impellers for high efficiency and resistance against erosion caused by abrasive particles. Sprinkler pumps self-prime to 20 feet for irrigation from a pond or creek. Single stage irrigation pump models feature a built-in check valve to insure fast selfpriming after initial liquid is added to the pump. Cast iron construction provides durability and low maintenance. PumpBiz also offers electric motor starters /...

designed for Industrial and Commercial applications requiring high volume liquid transfer, waste water drainage and processing. Electric CI or Stainless solids handling / semi-trash pumps feature self-cleaning clog resistant impeller capable of handling up to 3/8" diameter semi-solids. Built in Flapper / Check valves enable consistent self-priming to 20 feet. Two sizes 1-1/2" (282x-) and electric motor starters / controls.

Trash Pumps, Electric, 9 models BELOW. Sewage Trash pumps by AMT are Cast Iron designed for a trouble free and economical handling of solid-laden liquids and slurries. Electric Trash Pump, self priming is available in three port sizes; 2", 3" and 4". Available in 230v and 460v motors. Cast iron construction with 2 vane Stainless steel self-cleaning impellers, Silicon Carbide mechanical seals for trash abrasion resistance. 3" and 4" Models feature front trash cleanout. 15% solids. Built-in check valves...

This line of straight centrifugal pumps is designed for continuous-duty low pressure OEM, Industrial Commercial and General Service applications including circulation, chemical processing, Biodiesel mixing, liquid transfer and cooling. These durable and compact pumps come in 316SS and seal materials to meet your specification. The line also features a wide selection of single and three phase TEFC motors, up to 2 horsepower. All models feature Type 6 mechanical seals, SS metal...

AMT Straight centrifugal pumps are designed for continuous-duty OEM, Industrial/Commercial and processing applications including truck mount circulation, chemical processing, liquid transfer, heating and cooling. The high head models are ideal for sprinkler systems and pressure boosting.These units are available in a variety of construction and seal materials. Pull-from-the-rear design permits easy servicing without disturbing any piping. Pedestals feature CNC machined shafts...

The AMT Self priming electric pumps are designed for circulating, boosting, wash down, liquid transfer and dewatering applications. The centerline discharge feature is specifically designed to prevent vapor binding and makes for convenient piping connections. All models are fitted with self-cleaning semi-open impellers. The units will self-prime to 15 feet. Mounting bases feature 7/16" mounting holes which are 6" OC (on center). Built-in carrying handles offer...

Stainless Steel Self Priming Pumps 1". Centrifugal Self Priming AMT 316 SS Transfer pumps are designed to handle liquids and chemicals with specific gravities to 1.6 and viscosities to 100 SSU. The pumps are particularly well suited to applications involving perchloroethylene (PCE) and are recommended for use with nonflammable liquids. These pumps are fitted with Viton mechanical seal and O-ring. Self-priming to 6 feet. PumpBiz also offers electric motor starters / controls.

Multistage Vertical booster pumps. Commercial / industrial centrifugal pumps are non-self-priming (gravity feed) units designed to handle high-pressure low flow liquid transfer applications where no suction lift is required. Typical installations include: hot and chilled water, boiler feed, condensate return, irrigation, high pressure washdown, booster service, and fire protection/sprinkler systems—often referred to as a Jockey Pump. Models Available in 2 thru 27 Stages.

The AMT Bronze Coolant Recirculating pump has been manufactured for a wide variety of Industrial Commercial Coolant and Recirculating applications. American Machine tool pump made in USA. The absence of a bottom bearing makes the unit ideal for handling corrosive liquids. A 36" 3-conductor power cord is included. Flow curves are based on size of discharge tubing.

The AMT line of Stainless Steel Straight Centrifugal pumps is designed for continuous duty high flow and high pressure applications including chemical processing, liquid transfer, cooling, pressure boosting, circulating and applications requiring contaminant free pumping. Constructed of rugged deep drawn 304 Stainless Steel for durability and corrosion resistance. Investment Cast Stainless Steel closed impellers for enhanced performance and high efficiencies. All models include Viton® Type 21 mechanical...

AMT Engine Driven Dredge Pump is designed for dredging sea water (salt water) and fresh water containing up to 25% sand, debris and other abrasive particles. This unit can be used for other marine applications including dredging, pile driving, pier maintenance, emergency bilging and wash down.

This dredge pump is constructed of wear resistant High Chromium Stainless Steel internal components that are designed to last for over 500 hours of service with regular maintenance of rinsing pump after...

All of these AMT self priming sewage and debris pumps are made in the USA. Solid cast iron construction or aluminum with CI internals. 2", 3", 4" and 6" sizes. Many with Honda engines.

are designed for applications which require high flow efficiency and solids trash handling non-clog capability. These Pumps are quality made in the USA, not cheap imports or private labeled unknown brand.

Electric Self priming Motor Driven dirty water Pump 3" for use in construction, irrigation, spraying, fountains, wash down, car wash, fire fighting & general dewatering. Removable impellers, and suction plates. Semi-open clog-resistant impellers. Self-priming up to 20 ft.. Cast Iron casing, Bronze impeller. TEFC NEMA JM motors. Selfpriming action is after initial priming the pump casing with a small amount of water.

These grinder style pumps feature an enhanced spiral shredder mechanism plate and carbide tipped impeller to prevent clogging and reduce maintenance when cutting through stringy, fibrous and sludge type waste. Applications include sewage pumping stations, septic tanks, sewage treatment plants, dirty water drainage, flood and emergency. Also ideal for grinder type solids reduction application. Motors are rated continuous duty and single phase models have thermal...

AMT Submersible Sump Pumps are designed for many applications including sump pits, drainage pits, overflow tanks, basements, dewatering, excavation, grain elevators, construction drainage, cooling towers and other applications requiring clear water removal. AMT submersible utility pumps (except SS model 5780-98) include automatic float switch, thermal overload protector and suction screen. AMT Submersible Utility Pumps are reliable, cost effective, low maintenance and many are readily...

are suited for liquid and chemical transfer, heating and cooling, recirculation, booster service, salt water pump tansfer and other industrial applications. Stainless Steel units are especially effective in applications where rust and/or corrosion can develop in systems. Semi-open impeller features self-cleaning ability that makes the unit useful in applications involving muddy or dirty liquids, as well as clean, clear fluids. Biodiesel...

15 Models below. Made in USA. Gas, Diesel or Electric diaphragm pump, or mud / sludge pump. Easily maneuverable, the gas diaphragm pump is built for performance; Ideal for seepage dewatering, high suction lift, cleaning septic tanks, pumping industrial waste and marine tanks, small wellpoint systems and dewatering in sandy, muddy waters. Honda or Briggs gasoline engine or Electric diaphragm pump with motor.

AMT Submersible Contractor Pumps are intended for use in residential, commercial and industrial settings. Applications include: Construction sites, waste water, storm water, farming, irrigation, excavation, mining, marine, basement and other general drainage applications involving sediment laden liquids with solids up to 3/8" in diameter. Self-cleaning impeller featuring abrasion-resistant high chromium steel construction for durability. Pumps have a 3450 RPM electric motor...

Portable Gasoline Utility Pump for use: construction water pump, sprinkler irrigation, spraying, washdown, fire fighting, herbicides, transfer, dewatering. Removable / replaceable volutes, impellers, and wearplates. -V5 are Viton fitted for Ag chemicals, diesel fuel and other liquids which destroy water pump components.

Centrifugal Water Pumps. This line of straight centrifugal pumps, designed for continuous-duty low pressure OEM, Industrial / Commercial, marine and General Pump Service applications including circulation, chemical processing, chillers, marine, RO, liquid transfer and cooling. These durable and compact centrifugal pumps come in Cast Iron -95, Bronze saltwater -97 and 316SS -98 (click)and seal materials to meet your specification. Centrifugal pump features a wide selection of single and three phase TEFC...

Fire pump or High Pressure pumps - Gas or Diesel Engine powered.Self-priming high Pressure pump for lawn sprinkler, agricultural crop spraying, dewatering, fire fighting, emergency water supply & pressure boosting. Single and 2 stage, cast iron diffusers & stainless steel closed impellers for high efficiency. Includes heavy-duty steel roll frame.

The IPT AMT line of Cast Iron Engine Driven Solids Handling / semi-trash pumps offers an upgraded debris handling capability in wear resistant cast iron construction. Applications include: high volume liquid transfer, agriculture/liquid fertilizer, irrigation, commercial draining and construction. All models feature durable all cast iron construction and clog-resistant impeller to ensure a long life for the complete pump. Dual volute design reduces radial load on engines. Simple four bolt design for easy...

The IPT Self-priming Two-stage High Pressure Engine Driven pump includes precision cast high efficiency impellers to maximize performance and pressure. Cast iron diffusers for durability and extended life. Aluminum construction and heavy duty powder coated steel frame allows portability for use in many applications. This pump features cast iron male NPT ports, silicon carbide mechanical seals, EPDM/EPR O-rings and gaskets, built-in flapper/check valve and wrench for easy service of the pump. This unit is...

AMT Self-Priming Cast Iron Centrifugal pumps are designed for a broad range of high capacity applications, including dewatering, liquid transfer, circulation, drainage and irrigation. Dual volute design reduces radial load on motor. The centerline discharge feature is specifically designed to prevent vapor binding and makes for convenient piping connections. All models are fitted with self-cleaning, semi-open stainless steel impeller, which can handle 1/2" diameter semi-solids. Built-in check valves for...

Electric motor driven chemical pumps for Hazardous duty made by AMT. These centrifugal pumps are available in Cast Iron or Stainless Steel construction. The EXP pumps come in both End Suction (flooded inlet) or Self Priming designs. Sizes range from 1/2HP to 15HP. Motors are UL listed EXP (C 1, Gp C/D & C11, Gp F/G). Others available upon request.

2 inch Self Priming High Pressure Pumps. AMT 2" two-stage electric pumps for booster, irrigation and other high psi applications. Rugged Cast Iron construction with aluminum impellers and Viton mechanical seals. Built-in EPDM check valve for fast priming up to 20 feet. High pressure water pumps for fire protection, sprinkler / irrigation, booster and wash down. Fill and drain plugs included. Motors in 7.5HP and 10HP 230v/1 or 230/460v.

Self Priming Cast Iron pumps designed for industrial and commercial applications requiring high volume liquid transfer, waste water drainage and chemical processing. These pumps feature a self cleaning clog resistant impeller capable of handling up to 3/8" semi-solid debris. EPDM / EPR seals for liquid chemical transfer with specific gravities up to 1.3. Self priming to 20 feet. Pumps feature dual cycle 50/60 Hz TEFC motors.

High Head Pressure Centrifugal Pumps. Designed for continuous duty, high pressure, high flow, general service water / chemical / solvent circulation, transfer and boosting water in high rise apartments, hotels & office buildings, circulation of hot & chilled water, pressure boosting for cooling towers, pressure boosting for sprinkler systems.Investment cast components,Cast Iron(-95)Bronze(-97) and 316 Stainless Steel(-98). All pumps materials include a 316SS impeller.

High Head Pressure Centrifugal Pumps. Designed for continuous duty, high pressure, high flow, general service water / chemical / solvent circulation, transfer and boosting water in high rise apartments, hotels & office buildings, circulation of hot & chilled water, pressure boosting for cooling towers, pressure boosting for sprinkler systems.Investment cast components,Cast Iron(-95) and 316 Stainless Steel(-98). All pumps materials include a 316SS...

The term "trash" in the pump world is basically used to describe a pump that can handle liquids with solid material of at least 1 inch in diameter. Trash pumps do not grind up solids or debris, they just transfer it through. Contractors, farmers, and municipalities are constantly facing dewatering tasks that have high solid content such as leaves, sand, sewage, twigs, sludge, and mud. The size of solid content that a pump cand handle will depend on several factors including types of impeller, horsepower of the engine, and size of suction and discharge ports.

Trash pumps are typically at higher price points compared to regular dewatering or semi-trash pumps due to the fact that they"re made with higher quality materials and engines with higher horsepower to pump more abrasive and high solid content liquids. Even though the initial investment might be higher, the pay-off in performance and longevity of the pump will be worth it.

For the purpose of our discussion, we"re going to look at a few pump features that affect the cost of manufacturing a trash pump which results in higher cost to the consumer. To the consumer, the value on these features depend strictly on their dewatering needs.

The most common pump materials are aluminum, cast iron, and steel. Each of these materials have pros and cons, but the bottom line is that your higher end trash pumps are usually constructed with a class 30 cast iron pump casing and either cast iron or stainless steel impellers and shafts. Check out past blogs for more information on the pros and cons of the different pump materials.

The number one benefit of an auto prime (vacuum assist) pump is that you never have to manually add water to your pump. If you operate a self-priming pump with the casing being dry, you can damage the pump. An auto prime pump seals and removes air from the pump casing so it will fill with water and then water can begin to flow out of the discharge port. Another advantage to this type of pump is that it can be automatically started and stopped with the addition of the start/stop option.

The cost of a diesel fuel pump is initially higher than a gasoline pump, but a diesel pump has a higher efficiency range so in the long run it costs less to operate. It all comes down to how often you are going to use the pump. If you are a contractor or farmer that is going to work a pump hard, you should consider stepping up to a diesel pump.

A pump enclosure provides two main benefits to a pump owner: security and noise level. A lockable enclosure gives you peace of mind if you need to leave your pump unattended for a short period of time, and the good insulated steel enclosure can reduce the noise level down to conversation range. This is important if you are using the pump in a residential area or downtown area with lots of foot traffic.

At Absolute Water Pumps, we carry over a hundred different models of trash pumps from several manufactures. Why so many models? We want to make sure you can find a pump that meets your specific dewatering needs without having to pay for features and performance that you might not need. Below are descriptions of three higher end pumps that have some or all of the special features that we have previously discussed.

This AMT 6” trash pump is self-priming and can handle solids up to 3 inches in diameter. Powered by the Honda V-Twin, 23 horsepower, electric start, gasoline engine, this pump can move liquid at a rate of 1,000 gallons per minute with a static suction head of 96 feet. This pump is constructed with a cast aluminum casing, cast iron discharge and suction ports, and stainless steel impeller. Fuel tank is made of metal and will hold twenty gallons of gas resulting in a pump capable of running for 9 continuous hours before needing to refuel. A key feature of this pump is the patented slide mechanism that allows you to clean and maintain the pump without removing hoses or other components. Seal life is extended with AMT’s unique seal washing feature. This pump includes a D.O.T. approved trailer with 14 wheels for portability and transporting. This pump also is available with a diesel fuel option.

Power and performance are two words that describe this Multiquip 6” NPT diesel powered self-priming trash pump. The Duetz 60 horsepower, 2000 RPM, diesel engine provides the power for this pump that can move 1,600 gallons per minute with a max total head of 150 feet with solid handling up to 3 inches in diameter. Features a strong abrasion and pressure resistant grey cast iron pump casing and multi-vane open impeller. Comes equipped with a solid state control box with oil pressure, tachometer, ammeter and temperature gauges. Safety features include low engine oil and high temperature shutdown. Pump is mounted to a rugged metal skid.

Powered by the John Deere, 49 horsepower, tier 4, diesel engine, this 8” trash pump can move 2,700 gallons of solid laden liquid in one minute with a max head of 213 feet. Pump casing is constructed with durable class 30 cast iron. Impeller has a high efficiency, dynamically balanced design and is made of ductile iron with rear-equalizing vanes. Pump features automatic dry priming and re-priming, plus float controlled starting and stopping. Industry leading lockable silent canopy completely encloses the pump to provide a noise level down to 66 dB(A). This pump has multiple quick clean out ports for easy service access. Equipped with a large 55 gallon fuel tank and is trailer mounted with heavy duty jack stands.

Contractors, municipalities, and farmers often need to dewater areas that are rife with leaves, sand, sewage, twigs, sludge, and mud – a job best done by diesel trash pumps.

If you need to remove debris of any kind any larger than one inch in diameter, you"ll need a trash pump rather than a semi-trash pump. The cost of a diesel fuel trash pump is initially higher than a gasoline pump, but a diesel pump has a higher efficiency range which means it costs less to run over time. If you"re a contractor or farmer that needs to to work your pump hard, a diesel fueled pump is the right fit for your operation.

All trash pumps will share similar characteristics that set them apart from other pumps, say your traditional dewatering pump or a semi-trash pump. Trash pumps are made with aluminum, cast iron, and steel. Your casing will be made with cast iron, and the impellers and shafts will either be cast iron or stainless steel. These are construction grade materials, meaning your pump can work harder for longer. You"ll also benefit from auto-dry priming and re-priming so you never have to manually add water to your pump. The enclosures on trash pumps ensure security and noise. A lockable enclosure gives you the peace of mind you need if you find yourself needing to step away from your pump for a few moments. The insulated steel enclosure ultimately reduces noise, which is good if you need to use your pump in a residential or downtown area with a lot of foot traffic.

The size of debris your trash pump can handle will be determined by the impeller type, engine horsepower, and the size of your suction and discharge ports. A trash pump won"t grind the debris, but instead it passes debris like pebbles, leaves, and twigs through the larger impeller veins and housing.

This industrial strength trash pump is powered by a recoil start and 4.6HP Subaru/Hatz 1B20 diesel engine. Featuring cast iron impellers and volute for abrasion resistance for enhanced durability, maximum head of 95 feet, durable aluminum body, 2" inlet and outlet diamter, 25 feet maximum suction lift, and 41 PSI. Can handle up to 1" solids. CARB and EPA approved.

This diesel fueled trash pump is ideal for contractors, farmers, and municipalities, and can move 32,400 gallons of muddy water in one hour. Featuring low-oil shutdown, quick clean out for easy servicing, cast iron inlet and outlet ports, Buna-N check valve to protect from dirty water backing up into the pump, and a wheel kit with two 16 inch tires, steel base, and rails. Can handle up to 2" solids. CARB and EPA approved.

This workhorse of a diesel trash pump can handle up to 6" solids and offers an extra large 20 gallon metal fuel tank that means your trash pump can run for 12 continuous hours before needing to stop and refuel. Featuring a Yanmar 23HP engine, 1,000 GPM, 20 feet maximum suction lift, 96 feet maximum total head, and cast iron housing material, inlet and outlet port, and stainless steel impellers. CARB and EPA Tier 4 Final approved.

This high pressure jet pump from Thompson can run up to 34.7 hours before needing to refuel and features 1,200 FPM, 25 feet maximum suction lift, 132 feet maximum total head, automatic dry priming and re-priming, no. 30 grey iron housing material, a 2200 RPM Isuzu engine, and a mximum PSI or 57. Can handle temperatures up to 200 degrees and 3" solids. CARB and EPA Tier 4 Final approved.

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The EDDY Pump is excellent at moving heavy materials through long pipelines. The EDDY Pump creates a turbulent flow that helps keep the heavier and abrasive materials in suspension. Maintaining suspension assists the material in moving along the pipeline downstream of the pump due to less settling inside of the piping.

Centrifugal pumps create a laminar flow which allows the material to settle at the bottom of the piping.  Material settling at the bottom of the piping can interfere with the effective flow of the fluid and also cause greater wear inside the bottom portion of the piping.

EDDY Pump’s Performance does not rely on maintaining critical tolerances between the rotor and the volute. With the proper choice of materials for the pump case and rotor, the EDDY Pump is the perfect solution for pumping abrasive and corrosive material that often cause significant issues for other pumps.

Centrifugal pumps are designed with critical tight tolerances that must be maintained if consistent flow rate and efficiency is desired.  When pumping abrasive fluids these tight tolerances can diminish due to wear at the impeller.  When pumping corrosive material, increased wear due to the corrosive nature of the fluid can also be experienced.  This wear can increase the spacing between the impeller and the inside of the pump casing which creates slip, reduces pump efficiency, and begins to reduce the flow rate.

When choosing an EDDY non-clog pump for your abrasive and corrosive applications, you can experience less clogging, increased uptime, lower maintenance costs, and greater production.

The EDDY Pump Corporation is a premier manufacturer of pumping and dredging equipment.  If you are pumping or dredging slurry, high solids, extremely viscous material, paste, high abrasives (sand & gravel) and material filled with solids, then you found the best suited product for the job.Go to:https://eddypump.com/or Call Us!

Mining, Fly Ash, Coal Ash, Oil, Fracking, Gas, Wastewater, Pulp and Paper, Chemical, Energy, Water Municipalities, Irrigation, and Dredging Companies.  For Access to Complete Product Line Go to: https://eddypump.com/products/

A centrifugal pump is defined as a hydraulic machine that changes mechanical energy into hydraulic energy by the use of centrifugal force acting on the fluid. This is a machine that uses rotation to enforce velocity on a liquid, the velocity will then be converted into a flow. Every centrifugal pump is made up of mechanical components that make the operation of the pump possible.

This mechanical assembly involves the pump’s shaft mounted on bearings, the sealing mechanism that prevents the pump from leaking uncontrollably, structural components that are designed to handle the loads and stresses imposed on the pump during use, and also wear surfaces that permit the pump to be returned and returned to its original specifications.

It is the central part of the pump which rotates together with the impeller when connected. The shaft is linked to the prime mover in order to get the power. The shaft fits perfectly with the ball bearing.

It comprises an arrangement of backward curved vanes. It is mounted to an electric motor’s shaft. This is known as the rotating part of the centrifugal pump enclosed in a casing that is watertight. The impeller rotates and imparts velocity to a liquid.

This is a passage surrounding the impeller, which will be airtight. It is made in such a way that the water’s kinetic energy discharged at the outlet is changed to pressure energy before the water leaves the casing and is delivered into the delivery pipe. It works as a cover so that it protects the system. The casing transforms the velocity developed by the impeller into a stable flow. There are basically three types of casings in centrifugal pumps namely volute casing, vortex casing and casing with guide blades.

The impeller surrounds this type of casing. Such a casing provides a successive increase in the area of flow and hence decreases the velocity of water and increases the pressure.

This casing is a circular chamber that is introduced between the casing and impeller. The fluid from the impeller has to pass through the vortex chamber first and then through the volute casing. Velocity energy has been changed to pressure and has good efficiency compared to the volute casing.

In this type of casing, there are blades surrounding the impeller. These blades are arranged and designed in such a way that the water from the impeller passes through the guide vanes without shock and forms a passage of increasing area, through which the water passes through and reaches the delivery to leave with pressure.

The suction pipe has two ends. The first end is connected to the pump’s inlet and one end is dipped into the water in a sump. At the suction pipes’ lower end, a foot valve is fitted. The valve only opens in an upward direction as it will be a one-way type. To prevent the entry of unknown and unwanted bodies into the suction pipe, a strainer is fitted at the end of the pipe.

When selecting materials for centrifugal pumps, there are factors that need to be considered. These are strength, resistance to abrasive wear, corrosion resistance, casting and machining performance, repair and welding performance, and costs.

Cast iron, cast steel, stainless steel, bronze, brass, carbon structural steel composite materials, alloy steel, and non-metallic materials are some of the materials used to make centrifugal pumps.

Cast iron – This is the most common material used to make centrifugal pumps. It provides high tensile strength and abrasion resistance correlated to high-pressure ratings. It is also durable.

Stainless steel - Austenitic stainless steel is the most common stainless steel that is used to make pumps. Stainless steel is usually used for chemical pumps as it is corrosion resistant. Its tensile strength is remarkably high.

Cast steel – This material is suitable for high-pressure working conditions and has good mechanical properties. Though its corrosion resistance is not as good compared to other types of stainless steel used in corrosive and other chemical applications.

Non-metallic materials – This material in pumps is mainly used for sealing purposes for example polytetrafluoroethylene, rubber, nitrile rubber, and fluorine. Polytetrafluoroethylene has excellent high temperature resistance and corrosion resistance. Is used for static seals of mechanical seals and chemical pump gaskets. It is advisable to use almost all chemical media within 250°C.

Bronze – Can be used for the body of the pump. It helps the sealing of the pump body. For larger centrifugal pumps, tin bronze is used as a material for the body. Although nickel aluminum bronze is corrosion resistant and has the best mechanical properties it is expensive and incompetent.

Composite materials - to improve the chemical resistance of the pump, a lining can be installed in the volute. The materials used for the lining can be rubber. Graphite monolithic ceramic and pumps are used in particular corrosive liquids, like hydrofluoric acid which is used in the pulp and paper industry and metal finishing industry. Composite materials are also used to make pump bodies.

Chemical compatibility - Pump parts that will be in contact with the pumped media can be made from chemically compatible materials that will not be contaminated or result in excessive corrosion or contamination. Consulting a metallurgist for proper metal selection is advised when dealing with corrosive media.

Wear - Pumps that handle abrasives generally need materials with good wearing capabilities. Chemically resistant and hard surface materials are often incompatible. The housing and base materials should be of the right strength and also should be able to hold up against the conditions and environment being operated from.

These pumps operate 12 V DC, with a maximum flow of 330 GPH. It consists of alligator clips, a battery cable, and an on/off switch for ease when operating. The lowest height of water being pumped out can be 1/8 inches with the suction strainer, and the largest height of water being lifted is 40 feet. 3/4 inches garden hose adapter at both outlet and inlets, 6 feet suction hose, gasket for replacement, and an extra impeller. It can be portable due to its lightweight. In that case, a carrying handle can be attached to the body for convenient use.

Chemical pumps are designed specifically for use in pumping chemicals that are resistant to corrosive materials, which makes it suitable for handling corrosive and abrasive industrial liquids such as paint, fuel, solvent, bleach, and many others. A pump that contradicts the chemical can result in brittleness or dissolving, swelling, and ultimately it will leak and fail. Special consideration needs to be given to the materials of a chemical transfer pump, along with the concentration and temperature of the fluid being handled. Whenever there is required a chemical dosing pump, one for tank to tank transfer or a barrel emptying pump, the pump can be tested.

In radial centrifugal pumps, the fluid comes out of the impeller after rotating for 90 degrees relative to the suction. Many centrifugal pumps are found in this category. Fluid enters through the horizontal suction flange and leaves through a vertical outflow flange. The discharge will be perpendicular to the pump’s shaft. This design is commonly used when there is a flow limitation and a need to raise the discharge pressure. Thus, radial design is a low flow rate and a high-pressure pump. Most pumps that are used in the gas and oil industries fall into this category.

In an axial flow centrifugal pump, the fluid can move parallel to the shaft. This procedure is the same as the working of a propellant. The most important application of this pump is when there is a huge flow rate and very little pressure head. For instance, they are common in water circulation pumps and dewatering pumps.

As the name states, in a mixed flow centrifugal pump, the fluid flow mixes both axial and radial properties. That is a trade-off between radial and axial pumps. Mixed pumps operate at a much larger flow rate with a decent increase in the head.

In a single-suction centrifugal pump, the flow of the fluid is directed into the inlet, and the rest of the liquid immediately flows into the impeller eye, which is the inlet of the impeller. By the time when the water leaves the impeller, pressure is produced by the centrifugal force.

Single-suction will be inadequate when the flow rate is too high. In such a case, double suction centrifugal pumps are utilized. The pump’s impeller is engineered so that the fluid enters from all sides as compared to the single side in a normal case. Nevertheless, the name “double suction” should not be confusing. Even in the double suction pump design, there is only a single flange discharge and suction. The difference is in the design of the casing and impeller.

In centrifugal pumps that have a single volute casing, the flow is discharged from the impeller and goes into one volute, which winds completely around the impeller. This single volute casing has one cut-water that transports the fluid flow towards the pump’s outlet. Most of the centrifugal pumps in the refinery are of single volute types.

These pumps are portable pumps and are generally for dewatering applications. They are planned to pump large amounts of water that contains soft and hard solids such as mud, twigs, leaves, sand, and sludge. Most trash pumps are heavy-duty, portable centrifugal pumps that have larger discharge openings and deeper impeller vanes than other pumps. Trash pumps are capable of processing materials with some suspended particulates that can clog other centrifugal pumps and can move hundreds better yet thousands of gallons per minute. The materials that enter the pump are not grounded in the trash pump. They are designed to have a large discharge opening, pump housing, and deep impellers veins. The pumps can be made from cast iron, steel, aluminum, and stainless steel. Most of these pumps have roll cages.

Semi-trash pumps are types of trash pumps that have a smaller opening. They are not conceived to handle large solids or high solid concentrations. As a result, regular trash pumps are better suited for uses that need rigorous pumping of solid-laden slurries or water.

Syringe pumps are used for dealing with materials that require exact flow amounts at exact time intervals. Infusion pumps process fluid at highly controlled pressures and withdrawal pumps remove the fluid, these are the two types of syringe pumps.

Sanitary trash pumps are pumps used in applications progressive cavity trash pumps that need high levels of sanitation such as in breweries, food, and biotech companies. This type of pump is also able to move meters and slurry solutions.

Progressive cavity pumps are used for moving fluids and slurries with suspended solids. The fluids are suctioned from one side of the pump discharged from the other and then to a storage tank or through a pipeline. Cavity pumps can suitably transfer slower-moving viscous fluids and materials from these pumps and can be moved in a continuous flow.

Positive displacement pumps use pistons, diaphragms, gears, and other devices to pump fluids through. They can also be moved by a vacuum created when the fluid is pumped into a fixed cavity and then pumped out again, creating a vacuum that sucks in other fluids. Displacement pumps are the best when it comes to viscous liquids that are subjected to great pressure.

They are also known as deep well turbine pumps. These are vertical axis or mixed flow centrifugal pumps which include stages of stationary bowls and rotating impellers to process the guide vanes. Vertical pumps are used whenever the level of water pumping is below the volute centrifugal pump limits. Vertical pumps are costly and are more complicated to refurbish and fit. The design of the pressure head mainly depends on the impeller’s length as well as on the speed of its rotation. The pressure head designed with just one impeller is not that suitable.

The well pump is the heart of the water well system. They pump water upward and into the household or designated water system. Jet pumps and submersible pumps are the most popular pumps used nowadays. Both pumps depend on the centrifugal force for them to force water upward. Spinning rotors, also referred to as impellers, create a vacuum that forces the water upward through the well casing and into the distribution system. The type of suitable well pump required for a well system should depend on the amount of water required for each household and on the depth of the well.

Jet pumps are placed on top of the ground and lift water from the ground through a suction pipe, creating a vacuum with an impeller. The impeller drives water through a small nozzle. There is a need to first prime the jet pumps with flowing water as it pumps water. Shallow well jet pumps are utilized in wells with a depth of 25 feet while on the other hand, deep well jet pumps typically cover a depth of 150 feet.

Submersible well pumps have a much wider range in-depth and can be used in wells as shallow as 25 feet and as deep as 400 feet. As the name suggests, submersible well pumps are submerged deep in the well just beneath the water level. The majority of its energy is dedicated to pushing water upwards unlike sucking water from above as with the jet well pumps.

Submersibles are cylindrical in shape, and they consist of a pump motor and several impellers for driving water up the pump and into the drop pipe. Because of their durability, efficiency, and versatility in well depth, the majority of modern well systems use submersible pumps over some other pumps.

The centrifugal pumps are appropriate for large discharges but with a small head. Whereas reciprocating pumps do the opposite for less discharge with a high head..

Centrifugal pumps need a heavy foundation and more floor space whilst the reciprocating pump requires less floor space with a light and simple foundation.

Many industries (manufacturing, industrial, chemicals, food production, pharmaceutical, and aerospace) – use the pumps for the purposes of refrigerants and cryogenics..

They can be used as metering pumps that can pump precise volumes of liquid for treating water for example wastewater, drinking water, swimming pool water, and boiler water..

They are also used in process applications where metering of fluids is needed, where extreme high pressures are required, or where the sealless nature of the pump type is beneficial..

In the pharma and cosmetics industry, they are used to transfer lactose, glucose, and some other drugs and personal care products of medium and viscosity..

Corrosion Resistance – the pumps allow processors and manufacturers to transfer different types of fluids, even those that can quickly corrode the other pumps. The pumps even when used extremely well can offer a long service life. The pumps are able to withstand corrosive materials.

Energy Efficiency - Centrifugal chemical pumps rank high in energy efficiency in comparison to all the other pumping technologies. Their efficiency reduces costs both over the life span or in the short term of each unit.

Proven Reliability - Centrifugal chemical pumps are the best choice when reliability is important. The pump should be evaluated on the construction and design and features in order to ensure the specified pump will be durable enough to operate in extreme conditions.

Low Maintenance -Due to the long life spans, some pumps may need to be frequently routine maintained, which can make them costly to operate. However, centrifugal chemical pumps have low routine maintenance requirements.

Application Versatility- The same pump configuration is unsuitable for every application. With centrifugal chemical pumps, different configurations are there to provide solutions for multiple uses.

The absence of drive seals eliminates the risk of a leak. This means that hazardous liquids can be pumped efficiently without any spillages. Eliminating the drive seals is a way of getting rid of leaks, wear, friction loss, and noise and provides separation of fluid from the pump drive.

Lack of prime— In order to operate properly, centrifugal pumps must be filled with the fluid that needs to be pumped. If the pump casing is filled with gasses or vapor, the pump impeller becomes gas-bound and can stop pumping at all.

Liquids that contain ferrous particles can be problematic when a centrifugal magnetic drive pump is used. This is a result of the particles collecting on the impeller magnet, and as time passes it can cause the pump to stop working. Some of the energy is lost in the coupling. This is basically due to some magnetic resistance. The coupling may slip if unexpectedly heavy loads occur.

Centrifugal pumps use rotation to move water instead of suction and therefore have little or no suction power. This proves that a centrifugal pump must be primed or put underwater before it can move water or other liquids.

Determine the maintenance frequency with which the pumps should be checked and repaired. A certain time frame should be set to check the pump and verify if it is still working properly or as required.

Inspection and replacement of mechanical parts should be done regularly. The inspection can be a quarterly inspection, routine inspection or annual inspection. This inspection involves steps such as checking pipe lines for leakages, checking bearing temperature, increased vibration, unnatural and uneven noise, stuffing box, mechanical seal, discharge pressure and operating current. For annual inspection, check if all mount points are secure, clean filter, inspect pump flange for leaks, replace the mechanical seal, inspect coupling, replace lubricating oil and check shaft alignment.

Changing the pump"s lube oil is part and parcel of the annual inspection routine or the scheduled maintenance. It is essential to prevent bearing damage. One should remember to follow the manufacturer’s guidelines when it comes time to lubricate the motor. Be careful not to over or under lubricate the system. The damage to the pump may be greater in case of over greasing than in under greasing, to prevent this, the manufacturer’s instructions must be followed. There is a need to frequently lube if the pump is used frequently on a daily basis.

Inspecting the electric motors as a way of preventive maintenance is very important. Checking the insulation resistance of connections, ensuring all connections are properly and tightly secured, inspecting the motor for any signs of blocked or overheating the vents.

A centrifugal pump is a machine that changes kinetic energy into the fluid’s pressure head. The external power from a diesel generator or electric motor then turns the pump impeller. Under the influence of the centrifugal force, the fluid enters the impeller reaching its tip and leaving the volute casing. There are many types of centrifugal pumps for example chemical pumps, ver