self priming mud pump quotes free sample

With vast industrial knowledge and deep market understanding, we are engaged in manufacturing and supplying Self Priming Sewage Mud Pump. It is a large, reciprocating pump, used to circulate the “mud” on a drilling rig. We manufacture this pump at our sophisticated production unit using high quality mild steel and cast iron. It can be used in dewatering, mud, marine, effluent, loading & transfer of oils and more. Self Priming Sewage Mud Pump can move large volume of mud at higher pressure. It sustains in the harsh working environment for a good life span. We make available this pump for clients in different power ratings as per their requirements

We are among the reputed organizations, highly engaged in providing the best quality range of Horizontal Mud Pumps. Our offered pump is widely acknowledged among our clients owing to its specific usage in various engineering industries.

The provided Single Stage Horizontal Mud Pumps are manufactured using the quality grade raw material and modern technology. This pump is available in different sizes and can be availed by our client’s at most competitive price. These pumps are made available to the clients in different specifications to meet their specific requirements in the best possible manner.

Our pumps are specially design for muddy water, sewage, polluted liquids including solids and other waste handling requirements which are mostly useful in ceramic industries. We also manufacturer self priming pumps with semi open type impeller as per the requirement of the clients.

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Today, Gorman-Rupp self-priming pumps are the world’s leading choice for waste handling applications in industries such as steel and paper mills, mining operations, food processing plants, power plants, automotive factories, tanneries and wineries. They are also the pump of choice in many sewage-handling applications worldwide.

Gorman-Rupp self-priming centrifugal pumps are easy to install and easy to service. Because they’re self-priming, they can be mounted high and dry at floor level with only the suction line in the liquid – there’s never a need for service personnel to enter the sump. When service or maintenance is required, it can be completed easily with common hand tools. There are no long drive shafts to install and align, and no hoists or cranes are required.

Gorman-Rupp self-priming pumps are available as basic units for connection to your power source or may be flex-coupled, v-belt driven or engine mounted. Automatic priming means dependable performance. All that’s needed is an initial priming and the pump will continue to reprime automatically. In fact, our trash handling pumps will reprime with only a partially filled pump casing and a completely dry suction line!

Our reputation for quality has made Gorman-Rupp the world’s leader in self-priming centrifugal pumps. In addition, it makes us your best solution – meeting all of your industrial or municipal waste handling needs.

Our self-priming mud pump is best industrial mud pump used to circulate the mud. It is a non clog and self-priming type. Mostly used in marine, industrial, civil, construction, public utilities, polluted liquid including solid, sewage, oil well drilling, waste handling, etc applications.We also manufacturer self-priming pumps with semi-open type impeller as per the requirement of the clients. It is the most suitable industrial pump for handling water and noncorrosive liquids.

At DAE Pumps, we pride ourselves on the quality and performance of our pumps and provide complete solutions for all your slurry pumping needs. We offer slurry hoses for transferring materials, slurry flow meters to monitor the material flow rate, hydraulic power units, and other accessories. All our parts are always in stock and available for immediate shipping to anywhere in the US and the world. Get the right pump size and power for the job with a free DAE Pumps custom pump curve that graphically represents the pump’s flow rate of a specific head based on your exact requirements.

Self-priming pumps are used for a variety of applications and are one of the most popular types of pumps because of their robust nature. They get used in many different scenarios and for many purposes. DAE Pumps self-priming pumps are called industrial water pumps, slurry pumps, booster pumps, transfer pumps, jet pumps, dewatering pumps, surface pumps, process pumps, along with other identifiers because of the variety of applications. Sometimes these pumps are categorized for very similar purposes, but they do distinctly different functions.

One of the simplest uses for the centrifugal self-priming pump is a water pump. The purpose of the self-priming water pump is just that, to pump water. Standard water pumps only move water, but when particles, rocks, mud, or other element get mixed in, they clog and wear down very fast. You can find water pumps in vehicles, residential pools, and other light-duty applications but the DAE Pumps industrial self-priming water pumps are capable of pumping water with abrasive solids mixtures of rocks, sand, twine, and other slurries. These reliable industrial water pumps are fire pumps, dewatering pumps at construction sites, irrigation pumps on farms, and for wastewater applications to clean tanks and containers.

A robust self-priming pump that pumps more than just water is called a slurry pump. Slurry pumps move materials with viscosities up to 70% with the primary intent of moving solids over fluids. Slurry can consist of a variety of materials like mud, rocks, sand, food, vegetation, ropes, waste, tires, and anything else that can dirty up water.

DAE Pumps makes a variety of heavy-duty slurry pumps that are self-priming and can transfer large amounts of debris. Our size selection of self-priming slurry pumps meets the highest industry standards in durable metal hardness and volume pumping capabilities. DAE Pumps slurry pumps are used at mining and construction sites, on farms, at wastewater treatment plants, by a variety of city municipalities, in food processing, and a slue of other industries for several applications.

Booster pumps are additional self-priming pumps used to extend the length of pumping capabilities. Pumps can move fluids at a certain distance and height, called the head. The amount of material it can move at the max head is called the max capacity. Once reaching the max head, the flow capacity drops off, so a second, third, fourth, or infinite number of additional pumps may be needed to get to the final destination. These extra pumps are booster pumps. Requiring multiple booster pumps is common in pumping when needing to reach extended lengths and heights. DAE Pumps can help you set-up complete pump systems with any amount of booster pumps you need.

The transfer pump is a pump that transfers materials, such as water or solids, from one location to another. Transfer pumps move fluids from tailing ponds at mining operations, product in food processing plants, pulp mixtures and chemicals in making paper, oil & gas, fluids in drinks, and thousands of other applications. These self-priming pumps transfer material from tanks, containers, ponds, lakes, bins, and transport vehicles to the next destination. Self-priming pumps are ideal transfer pumps for their ease of use and reliability.

The jet pump is another application name of a centrifugal self-priming pump. They are ideal in supplying freshwater to farms, homes, and cabins where the suction lift is less than 90-feet. The jet pump can access the water supply in shallow wells to simplify the process of acquiring drinking water.

DAE Pumps self-priming pumps make an excellent dewatering pump used for removing water from the soil. Dewatering pumps get used at wellpoints and deep wells for suctioning underground water at the water table, removing floodwater caused by heavy rain, as bypasses for pipe breaks, and other applications. Dewatering of an excavated area is necessary for keeping the bottom dry and prevent leakage of groundwater, as well as rainwater and earth into the excavation. Self-priming pumps are ideal for their portability when mounted to a trailer. These types of dewatering pumps are moved from location to locations as multi-application tools, in emergencies, and for quick access.

The surface pump is pumping water off the surface of the ground. Often, when heavy rains occur, low lying areas flood. Water collects in construction sites, excavated mines, and buildings, creating a sump, and the surface pump removes the collected water and debris. Surface pumps remove or divert water from lakes, ponds, streams, rivers, and other bodies of water. DAE Pumps self-priming centrifugal pumps provide the power and capabilities to move large quantities of water through their high volume and pressure.

Process pumps continually perform the same process of pumping the same material day in and day out. The DAE Pumps centrifugal self-priming pumps make an excellent process pump. They are capable of performing the same act again and again with minimal maintenance and worry-free operation. Process pumps are in many applications from industrial to oil & gas and a vast array of production settings. The DAE Pumps process pumps are low priced, and their reliability makes them in high demand.

The “pond” is actually a man made dam which covers an area of about 40ha and has rockfill embankments of up to 53m high along the southern side that forms the impoundment.  It initially constructed in 1959 to act as a tailings pond to take the bauxite residue (red mud) from the Ewarton Plant situated about 5km away and 300m lower.  The red mud was pumped as a slurry comprising about 20% solids to the pond over a period of about 32 years up to 1991 when the pond was replaced by the Charlemount Mud Stacking and Drying Facility.  During this period the pond embankments (referred to as dams), were raised up to 7 times providing a final crest elevation of 472m.  The pond was however never filled to its final design capacity and the mud beach level remained at about 469m and the central area about 458m leaving a concave depression which held about 1.4mil m3 of water with elevated pH and some caustic content.

The remediation plan for the pond includes the removal of the ponded water and then the regrading of the mud surface to be free draining so that it can be stabilised and vegetated.  About 500,000 m3 of mud will need to be moved over a distance of up to 1km in order to create the required profile.  Due to the very soft nature of the surface muds (shear strength of less than 3kPa) its bearing capacity is less than 20kPa hence it is not accessible using even modified earthworks equipment.  In addition, the muds are thyrotrophic and under any vibration or shear loading, rapidly liquefy resulting in significant reduction in shear strength and loss of bearing capacity.  Using conventional earthmoving equipment would therefore require extensive “floating” haul roads with a high risk of machinery getting stuck or entire plant loss and risk to personnel.  It was therefore decided to investigate the possibility of pumping the in-situ red mud.

A mud pumping trial was undertaken to assess the feasibility of using this technique to do the bulk mud moving.  Pumping red mud is not unusual and the muds were initially pumped up to Mt Rosser Pond.  However, the muds are usually pumped at a solids content of 30% or less.  Once deposited, they can take years to reconsolidate and firm up sufficiently to allow access for light earthworks and agricultural plant.

In addition to the mud pumping, the trial included infilling three small scale geotubes to assess their performance as these may be needed as part of the regrading works.

The main aim of the pump trial was to determine if the muds could be pumped in their insitu state, and if not, what amount of water is required and how the variations in water content affect pump rates.

The mud pumping trial was undertaken using a 4” EDDY Pump.  This pump was recommended due to its ability to handle variable solids and robust operating mechanism.  The pump unit incorporated a hydraulic drive and cutter head.  The unit was mounted onto the boom of a JCB 220 excavator which also supplied the hydraulic feed to power the pump for the required range of 30-40 GPM at 3,500 to 4,000 psi (2428MPa).  The cutter head was powered by a standalone hydraulic power unit capable of providing the required 30gpm at 200psi (1.9 l/s at 13.8MPa).  If mounted on a 30-ton excavator with a System 14 hydraulic system and dual auxiliary feeds to the boom, all necessary hydraulic power for the pump and cutter head can be supplied by the excavator.  This equipment was however not available at the time in Jamaica.

In addition to the pump mounted on the excavator a Long Reach excavator (CAT 325) was used to move muds towards the cutter head but also to loosen up the muds and mix in additional water to facilitate pumping.  Water was added by pumping it directly from the pond using a 3” diesel water pump.

Prior to pumping the muds, the mud pump would operate in recirculation mode in order to prime the pump.  When in recirculation (re-circ) mode, the material pumped would be diverted to a short discharge pipe mounted on the pump directed back parallel to the cutter head. This action would help agitate and stir the muds.

A geotechnical soils investigation was undertaken on the muds within Mt Rosser pond in 2004.  It showed the material to be predominantly clayey silt with approximately 13% sand, 29% clay and 58% silt using conventional sieve analysis and hydrometer.  Atterberg limits indicate that the material is an intermediate to high plasticity clay.  The muds do however vary across the lake and also vertically. This is mainly as a consequence of the deposition process and discharge location.  Close to the discharge location the courser materials would settle out first and the finer materials would disperse furthest and to the opposite end of the pond.  The results are presented in figure 4.1.

Earlier this year, additional mud samples were tested as it was evident that standard soil mechanics tests did not provide an accurate assessment of this fine material.  This was particularly evident in tests done with dry sieving which shows the material as well-graded sand (see results for samples 5300, 5301, 5302 on figure 4.2).  When dispersed in water, even with an agent, the ‘yield-pseudo-plastic’ rheology of the muds appeared to affect the hydrometer results with large variations between tests (see results of samples PFT4&5 taken during mud pumping trials on figure 4.2).

The additional testing comprised of undertaking gradings using a Laser Particle Analyzer. The results indicated that the muds are predominantly Silt although the silt % varied from 30% to 80% with the material being either more sandy or more clayey (up to 15% clay). See results of samples ending in “L” on figure 4.2 below.

Moisture content tests on the muds taken from within the mud pond but below the ponded water ranged from 100% to 150% (50% to 40% solids).  The muds at the pump test location were 137% (42% solids).

Shear strength was generally very low ranging from 1kPa to 6kPa increasing with depth.  Dynamic probes previously undertaken indicated that the muds are “very soft” to 5m increasing in strength slightly to “soft” at a depth of 9m after which they increase to firm becoming stiff.

The pH of the muds ranged from 10.3 to 11.7, (ave 11.2).  Previous testing indicated that the surface muds have the lower pH although once through the crust, the pH tends to be higher. When doing the trials, the muds up to a depth of about 2.5m was intermixed, hence any stratification in pH could not be determined.

Initially, pumping was problematic mainly due to the excavator being underpowered. This was diagnosed as a hydraulic pump problem and the excavator was replaced.  The cutter head (which also acts to protect the intake) tended to blind with mud (Photo 5.1) and was also not providing enough agitation to liquefy the muds.  This was partly resolved by adding “stirrers” (2 steel loops welded either side) to the rotating cutter head and also a “comb” (Photo 5.2) to keep the gaps within the cutter head open.

Mud pumping rates varied from 21 l/s to 52 l/s (332 – 824gpm) and it was clearly visible that the more liquid the muds were the higher the pump rate was.  Samples were taken at different discharge rates and moisture content and percent solids determined by laboratory testing.  The results are plotted in Figure 5.1 and although scattered, do give an indication of the effects of solids content on flow rates.  The natural moisture content of the muds (insitu) at the test location was 137%, or 42% solids.  This is shown in Figure 5.1 as a vertical line.  Pumping muds close to the percent solids was achieved although flow rates were low.

As mentioned previously, the long reach excavator was used to loosen up the muds.  Water was pumped from the pond using a 3” pump into the excavation and the long reach would then work the muds to mix the water in.  The mud pump would then be used in recirculation mode to further mix the muds into a more consistent state.  Even with this mixing and agitation, the water tended to concentrate on the surface. This aided the initial process of priming the pump and once primed thicker muds at 1m to 2m below the surface could be pumped.  However, it was found that the deeper muds tended to be lumpy and this would significantly reduce or stop the flow requiring the pump to be lifted into thinner muds or having to go back into re-circ mode or having to fully re-prime.  The pump discharge was therefore very inconsistent as the suction intake position constantly needed adjustment in an attempt to get adequate discharge but also pump the thickest muds possible.

Discharge of the pumped muds was through 30m of flexible hose then 60m of 4” HDPE pipe which had an internal diameter of about 87mm (3.5”).    The muds were discharged onto the original mud beach which lies at a gradient of about 9%. On deposition the muds slowly flowed down gradient.  At times the flow would stop and the muds would build up then flow again in a wave motion.  The natural angle of repose would therefore be a few degrees less than this – probably 5% to 6%.

Although the muds have very low shear strength, and on agitation liquefy, the sides of the excavation had sufficient strength to stand about 2m near vertical.  Even overnight, there was limited slumping and the bank could be undermined by about 0.5m with the cutter head/agitator before collapsing.

On termination of pumping, in order to flush the pipeline, thin watery muds were pumped until the line was clear. A “T” valve system was then used to connect the 3” water pump line and this was then used to flush the pipe with water.

Three geotubes (1m x 6m) were filled with red muds pumped using the 4” Eddy pump. Fill rates were about 30 to 40l/s although it was difficult to assess as the flow and mud consistence was not visible.

Tube 1 was filled initially with more runny mud and then thicker muds as the pump operator got a better feel for conditions.  The tube was filled until firm.  The second tube was filled with thicker muds and filling continued until the tube was taut.  These two tubes were positioned on the sloping beach in order to form a small “U” impoundment area that would later be filled with pumped muds.  Although the area was prepared, the sloping ground caused the first tube to rotate through about 20 degrees. The tube was staked and the downslope side backfilled.  A more defined bed was created for the second tube and the same rotational issue was limited.  The two filled tubes with the ponded mud are shown in Photos 5.7 and 5.8.  Other than a small leak at the contact between the two geotubes, the ponding of the muds was successful.

The third tube was positioned on level ground. It was filled with medium runny (but consistent thickness) muds and was filled until the tube was taut.

In all three cases, there was very little mud loss or seepage from the tubes.  When stood on, some red water would squeeze out around the pressure area.  Once filled taut, the entire bag would have small red water droplets form on the outside (visible in Photo 5.11) , but the seepage was in general nominal.

The tubes have been monitored and the most recent photo’s taken on 10 October 2011 (6 weeks after filling) show how the tubes have reduced in volume due to the dewatering of the contained muds.  Volume loss is estimated to be around 30%.  The anticipated moisture content would therefore be about 90% and the solids around 53%.

The muds pumped into the trial pond behind the geotubes were medium thick to thick, probably in the order of 37 – 40% solids.  After 6 weeks the mud has not only firmed-up but had dried out significantly with wide and deep surface cracks as are evident in Photo 5.14 and 5.15.

The muds can be pumped at close to their insitu moisture content and most likely at their in-situ moisture content if they were agitated more and the pipeline system was designed to reduce friction losses.

Be able to access the mud surface and move around efficiently and safely. The suggestion is to have the pump mounted on a pontoon that is positioned using high strength rope (dynema) or steel cable.  The pump system should be remotely controlled as this would limit regular movement of personnel on the muds.

Have sufficient power and volume capacity to pump the muds at close to or at in-situ moisture content and discharge them about 1000m through a flexible pipeline.

It was also evident from the trials that the muds do not slump and flow readily.  It will therefore be necessary to have an amphibious excavator to loosen up the muds in the area around the pump head.  This weakened and more liquid mud would also aid the movement of the pump pontoon.  To also limit the amount of movement the pontoon will need to do, the amphibious excavator could also move muds towards the pump location.

Using the capacity of the 4” mud pump, mud moving would take about 1.5 to 2 years, the pump will however need to be more suited to the task.  A target period of 1 year however seems reasonable.  However, prior to this, equipment will need to be procured and imported into Jamaica. The 6 and 10 inch Excavator Dredge Pump Attachments are also being considered as an option for higher GMP and a more aggressive completion timeline.  A preliminary programme is as follows:

Side channel pumps are a type of pump which is not well known. It is a type of design which enables pressures of 5- 10 times to be produced more per stage than normal impellers operating at the same speed found in multistage pumps.

This enables fluids of low viscosity to be transferred at high pressure and low flows but also benefit from the design being self-priming as well as handle entrained gas.

A side channel pump, also known as liquid ring pump is a type of self-priming multistage pump, having characteristics of that of a positive displacement pump.

Side Channel pumps are quite unique in terms that they can handle up to 50% of entrained gas with fluid and vapour taking different paths through the pump. They contain multiple impellers similar to a multistage pump, however the design of the impellers are slightly different being more like a multistage peripheral pump.

Units contain multiple radial vane designed impellers with some models having the first impeller of closed design similar to a centrifugal pump having contains side walls. The pump looks similar to a multistage pump with each impeller housed within a stage casing held together by tie rods.

The fluid path enters the pumps inlet, where it comes into contact with a suction stage casing. It then passes through impeller vanes before exiting via the outlet port where it enters another ring section repeating the same process or exits the pump through the discharge.

The vapour path enters the pump inlet, and passes through the suction stage casing similar to fluid, before passing around the outside of the impeller and exiting via a secondary discharge port.

1.Lower System Costs –As the pump accepts inlet heads of less than 0.5M of boiling liquids, it is less sensitive to cavitation and accepts NPSH values as low as 20cm meaning less system infrastructure is required. Higher pressures can be achieved by smaller motor powers, and with smaller unit sizes than multistage pumps.

2.Self-Priming –Pumps are self-priming by design enabling units to be mounted on top of tanks, which can be safer saving on secondary bunding, also eliminating the need for secondary priming devices. When container emptying, due to its design the unit retains fluid meaning re-priming is not necessary.

3.Entrained gas handling -meaning the pump can handle pumps with high gas content such as condensate, but also handle a mixture of liquid and air enabling the pump to completely empty containers, handling liquids with gas slugs problem free.

4.Low NPSH requirements –With liquids which are being pumped close to their boiling point such as liquid CO2, Liquid Petroleum Gas (LPG), liquid ammonia, Liquid Hydrogen, refrigerants and other hydrocarbons, a pump with a low NPSH must be selected otherwise the fluid will boil at the pump inlet potentially causing gas locking within the pump.

Side channel pumps have a NPSH as low as 0.2M meaning such problematic fluids can be handled without issue. Furthermore the amount of fluid which can be extracted from containers is far higher than if a standard centrifugal or vane pump was used.

Certain models are known to be cavitation proof pumps, due to their low NPSH but also in applications with variable vapor pressure involving gaseous liquids.

5.Problem Free Pumping –Volatile chemicals such as aerosols, liquified gas, hydrocarbons or refrigerants with varying inlet pressures can be pumped problem free due to the design of pumps. Units can be built with a magnetic coupling ensuring a leak free process, and zero possibility of expensive, flammable or toxic liquids escaping. Liquids can be handled across a wide range of temperatures from -60°C to 220°C, which is not often possible with positive displacement pumps.

8.Low flows and High heads without pulsation –low flows of low viscosity fluids (<200cst) can be achieved which are typically performed by positive displacement pumps without pulsation.

Gorman Rupp has been manufacturing high performance self-priming pumps since 1933. Their pumps are engineered for easy installation, operation, and maintenance. Gorman Rupp self-priming pumps are designed for dirty water, limited solids, and clear liquid applications.

These close coupled, electric pumps are available in stainless steel or bronze construction, with Viton elastomer seals and O-rings. Various sizes and power levels are available to handle a wide range of pumping challenges.

AMT, a subsidiary of Gorman Rupp, has been providing top quality industrial self-priming pumps for over 70 years. AMT uses patented technology and unique designs to deliver superior performance and reliability. Their products are durable, cost effective, and low maintenance solutions to a wide range of pumping challenges.

AMT’s 1” self-priming pumps are made from investment-cast stainless steel and designed to handle various liquids and chemicals with specific gravities up to 1.6. Recommended for use with most non-flammable liquids that are compatible with pump component materials.

1.5” self-priming pumps from AMT feature stainless steel or bronze construction. Engineered for a wide range of applications, such as chemical processing, waste water treatment, and pumping agricultural fertilizers and fumigants. All models in this category are equipped with TEFC motors (Totally Enclosed, Fan Cooled) for reliable, long-term operation. Designed to move most fluids with viscosities up to 100 SSU; select models can handle specific gravities to 1.3. Recommended for use with most non-flammable liquids that are compatible with pump component materials.

Sethco designs their magnetic drive, self-priming pumps to meet the demands of numerous applications. These devices are equally effective pumping corrosive chemicals, acids, solvents, or almost any non-flammable fluid. Thanks to a simple, efficient design, Sethco self-priming pumps provide reliable and trouble free performance with minimal maintenance.

Built with high strength, one-piece polypropylene casings and Kynar (PVDF) seals, these pumps utilize two-piece impellers for high volume circulation and leak-proof operation.

Discharge Head: This is the vertical distance that you are able to pump liquid. For example, if your pump is rated for a maximum head of 18 feet, this does not mean that you are restricted to 18 feet of pipe. You can use 300 feet, so long as the final discharge point is not higher than 18 feet above the liquid being pumped.

Suction Lift: This is the vertical distance that the pump can be above the liquid source. Typically, atmospheric pressure limits vertical suction lift of pumps to 25 feet at sea level. This does not mean that you are limited to 25 feet of pipe. You could use upwards of 300 feet of suction pipe, so long as the liquid source is not lower than 25 feet below the pump center line.

The Grundfos MQ pump is a compact "all in one" constant pressure centrifugal pump. Designed as a complete water supply system, the MQ pump is perfect for residential, agriculture, or horticulture applications. The MQ is a complete system, incorporating pump, motor, diaphram tank, pressure switch, controller, and valve all in one plug and pump unit. The Grundfos MQ pump is a self priming multi-stage centrifugal pump. The pump will self prime from a well down to a depth of 26 feet. With its own control system, the MQ has built in protection features like: dry running, over temperature, or electrical overload. These features prevent motor burnout! The MQ pump is available in four different sizes. Easy to use, easy to install making the Grundfos MQ pump advantageous for these applications:

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Based on one of the industry’s most field-proven pump configurations, Elgin’s line of self-priming solids-handling pumps offer a trouble-free, non-clogging design. The large volute automatically reprimes in a fully open system, without the need for complicated suction or discharge plumbing.

Elgin recognizes the need for reliable and efficient self-priming pumps.Elgin’s line of self-priming, solids-handling pumps have been designed to reliably handle a myriad of solids-laden fluids with minimal maintenance.

Self-priming pumps are a specific type of liquid pump designed to have the required liquid inside the cavity or pump body necessary to start the pumping process.This offers the potential for increased operating efficiencies in process plants where pumps are used for a variety of repeated yet intermittent operations.

Some pumps are designed to always have the requisite start-up liquid in the pump’s chamber or body. These are called “self-priming” pumps. Other pumps require the start-up liquid be added to the pump before initiating operation. No one type of pump is intrinsically superior to another: it simply depends on what the pump is used for and how often.

Some types of pumps are engineered to be automatically self-priming.Pumps of this nature feature close tolerance working parts that trap fluids in the pump’s body, preventing them from returning from the discharge side of the pump to the suction side when the pump is not in operation.

In these types of pumps, the constant presence of fluid in the pump’s body allows the pump to better handle what are called “air pockets”. Air pockets are an accumulation of air bubbles in the pump’s working mechanism, which can impair proper pump operation.

For these types of low viscosity fluids, a V-type centrifugal pump design is often preferred, featuring a vacuum pump and positive seal that is located close to the discharge port. This allows a V-type centrifugal pump to readily pull a vacuum until it is full of fluid.

However, standard centrifugal pumps are not designed to be self-priming.Unlike the pump types already described, standard centrifugal pumps do not trap liquids when not in use — although engineered modifications to the pump’s housing may allow some of these types of pumps to be self-priming.

With centrifugal pumps, the pumping action occurs when an impeller is rotated in a liquid within a cavity or chamber of the pump, displacing the liquid and forcing it to flow into the discharge port of the pump via centrifugal force.

Fluids typically enter the pump at the center of the impeller and are discharged via a port on the outer perimeter of the pump’s body. The impeller is often directly coupled to the pump’s motor, in what is called a monoblock design.

Air is the primary enemy of this type of pump. When a standard centrifugal pump encounters air pockets, it can become “air bound”, and refuse to operate. Air intrusion into standard centrifugal pumps is typical, as these types of pumps don’t feature tightly coupled pumping mechanisms such as gears or screws and have no seals between the suction and discharge sides of the pump.

Self-priming centrifugal pumps overcome air binding by initially mixing any residual air in the pump’s working mechanism with fluid during the priming process.

This blending allows the resulting mix to move readily through the pump’s body on initial start-up, removing the air and aiding product flow on the suction side of the pump. The process liquids and any entrained air move toward the impeller, and normal pump operations commence.

In comparison to a standard centrifugal pump, what’s notable in the design of a self-priming centrifugal pump is that it features a liquid reservoir built into the body of the pump, typically either above or in front of the impeller.

This reservoir allows the pump to rid the pump’s body and suction line of air during the priming cycle, replacing it with liquid from the reservoir that is blended into the residual air. The “self-priming” capability of this type of centrifugal pump comes from the ability of the reservoir to retain liquid after its very first prime.

When compared to submersible-type pumps, self-priming centrifugal pumps will continue to pump liquids even after the pump is no longer submerged in a liquid tank or vessel

Due to the need for a liquid reservoir, this type of centrifugal pump can be larger than a standard model, which may cause issues in applications where space is limited

The LKH Prime pump from Alfa Laval is a centrifugal-type self-priming pump that is ideal forCIP operations. The LKH Prime also easily pumps products with entrained air. Once the liquid no longer contains entrained air, you are left with a highly efficient and quiet LKH Pump, one of the most capable centrifugal pumps produced.

For product applications, this pump features an air screw coupled with a highly efficient centrifugal impeller to effectively handle a variety of process media.

The SP Series is a liquid ring pump from Ampco that uses compression chambers to pump, and only uses centrifugal force to seal the chambers with a liquid. It is excellent for CIP return operations and pumping products with entrained air.

The SP Series pump is efficient at emptying tanks and drums, and can handle shear-sensitive products due to its tight manufacturing tolerances and unique impeller shape.

Bornemann’s SLH Twin Screw Pump is a self-priming positive displacement pump best for aseptic processes and applications involving high viscosities, high pressures, or sensitive materials. The variable speed feature of this pump is suited for varying operating conditions.

The C-Series is an eccentric disc pump featuring Mouvex technology. This positive displacement pump uses its strong suction power and ability to run dry to gently and effectively move both liquid and dry products.

The C-Series is available in stainless steel models that carry 3-A approval and are designed to meet EHEDG specifications. This pump can be flushed and cleaned using CIP methodswithout disassembly and can pump both high and low viscosity products with outputs not affected by variations in liquid viscosity.

This guide is intended for engineers, production managers, or anyone concerned with proper pump selection for pharmaceutical, biotechnology, and other ultra-clean applications.

For hygienic processing applications that require the frequent yet intermittent use of liquid pumps, choosing a self-priming pump may be the best solution for ensuring efficient pump operations.We"re here to help!

CSI offers a number of self-priming pumps based on centrifugal, twin screw, and eccentric disc technologies. Contact CSI at (417) 831-1411 to discuss your requirements.

Central States Industrial Equipment (CSI) is a leader in distribution of hygienic pipe, valves, fittings, pumps, heat exchangers, and MRO supplies for hygienic industrial processors, with four distribution facilities across the U.S. CSI also provides detail design and execution for hygienic process systems in the food, dairy, beverage, pharmaceutical, biotechnology, and personal care industries. Specializing in process piping, system start-ups, and cleaning systems, CSI leverages technology, intellectual property, and industry expertise to deliver solutions to processing problems. More information can be found at www.csidesigns.com.

The song and its music video went viral in August 2012 and have influenced popular culture worldwide. In the United States, "Gangnam Style" peaked at number two on Billboard Hot 100. By the end of 2012, "Gangnam Style" had topped the music charts of more than 30 countries including Australia, Canada, France, Germany, Italy, Russia, Spain, and the United Kingdom. Psy"s dance in the music video itself became a cultural phenomenon.

"Gangnam Style" is a South Korean neologism that refers to a lifestyle associated with the Gangnam DistrictSeoul,"s weekly vocabulary list as a manner associated with lavish lifestyles in Seoul"s Gangnam district.Beverly Hills, California, and said in an interview that he intended in a twisted sense of humor by claiming himself to be "Gangnam Style" when everything about the song, dance, looks, and the music video is far from being such a high class:

On September 18, 2012, the North Korean government became the first to use "Gangnam Style" for political activism when it uploaded a parody with the title "I"m Yushin style!" onto the government website Uriminzokkiri.Park Geun-hye. It shows a Photoshopped image of the presidential candidate performing the dance moves of "Gangnam Style" and labels her as a devoted admirer of the Yushin system of autocratic rule set up by her father, Park Chung-hee.草泥马 style" (literally, "Grass Mud Horse Style": The Chinese characters are a homonym for a vulgar slurdissident Ai Weiwei. In his parody, Ai Weiwei dances "Gangnam Style" with a pair of handcuffs as a symbol of his arrest by Chinese authorities in 2011. According to the Associated Press, government authorities had removed the video from almost all Chinese websites the next day.

On September 6, Psy appeared at the 2012 MTV Video Music Awards performing his "Gangnam Style" dance alongside comedian Kevin Hart.Burbank, California, introducing himself as "Psy from Korea" before teaching Britney Spears the dance. He described the dance as "pretending to bounce like riding on an invisible horse"NBC"s morning program Bobby Moynihan portrayed Psy, but was joined mid-sketch by Psy himself.The Ellen Show"s September 19 episode to perform the song along with his backup dancers.iHeartRadio Music Festival to perform "Gangnam Style."Barbara Walters and the women of the show who donned sunglasses and got out of their seats.