two way hydraulic pump pricelist

Enerpac C-604, Parker 3000 Series, Safeway S30 Series, Stucchi IVHP Series, Perfecting T Series, Snap Tite 76 Series, Dnp PVM Series, Faster PVVM Series

Push Button Stop/ Start, Lever Valve Action - Control lever forward: Pump into hose A, Returns to reservoir on hose B. Control lever neutral: Returns to reservoir on hose A and B. Control lever backward: Pump into hose B, Returns to reservoir on h

The hydraulic power pumps are ideal for small, high-pressure applications. They have a positive lifplacementpan and a variety of hydraulic power pumps, ideal for those who want to save energy on rotating pumps.

The hydraulic power varies depending on the pressure of the pump, for it is lowering the hydraulic piston. It prevents hydraulic pistonches from expanding or lifting the piston from a pressure point to the piston.

These hydraulic pumps are great for intensive, short-term space. They are also great for intensive, and lifeline piston pumps have a wide range of pressure settings to either the front or center- gravity pumping, the lifeline piston pumps have two pistons,

Larger hydraulic pumps are designed to pump two-stage hydraulic pumps. These larger hydraulic piston pumps, for example, have a piston incorporated of the two-stroke hydraulic pumps.

The Power Team P-Series hand pumps come in a variety of configurations to meet the requirements of your application.  Along with various oil capacities and flow rates, you can choose from the following options:

Compact design ensures that the Power Team PA6 series pump is lightweight and portable. The PA6 series consists of single-speed pumps designed to drive single-acting cylinders. The power unit of choice for major manufacturers of auto body, frame straighteners and other equipment. Operates at 40-100 psi (3-8 bar) shop air pressure at the pump, dBA 85 at 10,000 psi (700 bar). Serviceable pump motor is not a “throwaway”, providing economical repair. Permanently vented reservoir cap. Internal relief valve protects circuit components, air inlet filter protects motor.

Compact, lightweight and portable the Power Team PA6D series pumps are single-speed pumps for driving double-acting cylinders. The PA6D series pumps operate at 40-100 psi (3-8 bar) shop air pressure at the pump. Designed with longevity in-mind the PA6D series feature internal relief valve protects circuit components, air inlet filter protects motor. Serviceable pump motor is not a “throw away”, providing economical repair. Permanently vented reservoir cap. dBA 85 at 10,000 psi (700 bar) for all PA6 pump.

Ideal for powering single-acting cylinders and portable hydraulic tools, the Power Team PA9 series pumps are easier to operate than a hand pump, designed for efficiency. Built to be economical in service; the PA9 series is not a “throwaway” unit. Unique bladder design for all-position operation and storage. Operates on 40-120 psi (3-8 bar) shop air, at 20 cfm (570 l). Hard-coat anodized aluminum housing. Oil filler with integral safety relief minimizes chance of damage to reservoir bladder if overfilling occurs.

A two-speed pump, the Power Team PA60 series pumps are designed for rapid oil delivery at low pressure to quickly advance cylinder or tool. Equipped with air pressure regulator, air filter and lubricator. Serviceable air motor for economical repair. Internal relief valve protects circuit components. Permanently vented reservoir cap.

Focused on single-speed and low pressure the Power Team PA50 series pump outputs 3,200 PSI / 220 BAR, fitting serviceable requirements for air motor for economical repair. Integrated air inlet filter protects motor. The PA50 series also features a filter in outlet port protects against contaminated systems Assorted reservoirs to suit your application"s requirements.

Rotary-Style Air Motor.  Use where air is the preferred source of energy.  Two-speed operation for high speed cylinder advance.  Durable two gallon thermoplastic reservoir. (Metal reservoir conversion kits are available.)  Air motor capable of starting under full load.

Rotary-Style Air Motor.  Use where air is the preferred source of energy.  3 hp motor starting under full load.  Two-speed operation for rapid cylinder advance.  Models available with full remote control over advance and return, except PA554.  Tandem center valve holds the load when pump is shut-off.

Compact, Portable, Cordless Hydraulic Pump for MRO Applications.  Compact, Li-ion 18VDC, 9.0 Ah battery-powered pump provides extended run-time.  Two-stage, high-pressure hydraulic pump offers quick tool advancement in the first stage.  Extremely compact, lightweight with an ergonomic handle grip and transport strap to ease portability.  Self-contained, rubber bladder reservoir allows pump usage in most positions with an impressive capacity of 70 cu. in. usable.  Quiet, smooth-running, serviceable brushed 18VDC motor.  High-impact, fiberglass reinforced shroud protects your investment in the most demanding and harsh applications.  Interchangeable valve configuration accommodates a vast array of applications.  CSA rated for intermittent duty, CE compliant.

The 10 series Power Team hydraulic pumps are designed to have a maximum of 690 bar (10,000 psi) at a flow rate of 164 cc/min (10 cu. in/min). All Power Team pumps come fully assembled, and each with the ability to be valved for either single- or double acting cylinders. Designed to be compact can easily mobile, the power team 10 series includes a portable power source is included for hydraulic cylinders, and tools. The permanent magnet motor is strategically constructed to easily start under load, even with reduced voltage conditions. Battery-operated models have 8 foot (2,4 m) power cord with alligator clips to connect to any 12 volt battery, optional rechargeable battery pack with shoulder strap are alternatives for maximum portability. The Power Team 10 series pump typically delivers 15 minutes of continuous operation at 10,000 psi (700 bar) on a single battery. Built to withstand High-impact, shielded with a flame retardant construction.

The Power Team 17 series pump is delibertly designed for maintenance and construction applications up to 55 Ton. For use with single-acting or double-acting cylinders at operating pressures to 10,000 psi (700 bar). For intermittent duty; starts under full load. Equipped with 1⁄2 hp (0,37 kW), 3,450 rpm, single-phase, thermal protected induction motor; 10 ft. remote control cord (PE172S has 25 ft. (7,6 m) cord) Low amperage draw; small generators and low amperage circuits can be used as power source. Extremely quiet noise level (67-81 dBA).

Vanguard Jr. + Power Team 18 series pumps provide two-speed high performance in a light-weight, compact package. Designed to provide a gauge port and metal reservoir on all pump models. Equipped with a 1⁄2 hp (0,37 kW), 115 volt, 60/50 Hz single phase motor that starts under load, even at reduced voltage. Low amperage draw permits use with smaller generators and low amperage circuits. All pumps have a 10 foot (3 m) remote control. CSA rated for intermittent duty. Noise level of 85-90 dBA. For operating hydraulic crimping, cutting or other tools: No. PE184C - Allows you to alternately operate a spring-return cutting and/or crimping tool without disconnecting either tool. Select a port connection with a manual 4-way valve, start the pump with a remote control hand switch and extend the connected tool. When the hand switch is switched to off, the pump stops and the automatic valve opens, allowing the tool to return. In the center (neutral) position, a manual control valve holds the tool in position at the time valve is shifted.

The 21 series Power Team pump and RD5513 cylinder used in a special press that produces pharmaceutical-grade extracts for herbal medicines. Totally enclosed, fan cooled induction motor: 1 hp (0,75 kW), 1,725 rpm, 60 Hz, single phase. Designed intentional for thermal overload protection. Remote control, with 10 foot (3,1 m) cord is standard on pumps with solenoid valves. Manual valve pumps have “Stop”, “Start” and “Run/Off/Pulse” switches. Pump controls are moisture and dust resistant. Motor drip cover with carrying handles and lifting lug. Low noise level of 70 dBA@ 10,000 psi (700 bar). In the event of electrical interruption, pump shuts off and will not start up until operator presses the pump start button. 24 volt control circuits on units with remote controls provide additional user/operator safety.

Ideal for running multiple tools or cylinders from one power unit. Recommended for cylinders up to 75 tons. Two-speed pumps have the same low pressure and high pressure flows from both valves. Flows and pressures of each pump are independent. Delivers 300 cu. in./min. of oil at 100 psi (4,8 liter/min of oil at 7 bar) and 25 cu. in./min. at 10,000 psi (0,4 liter/min at 700 bar) from each pump. 1 1/2 hp, 110/115 volt, 60 Hz (1,12 kW, 220 volt, 50 Hz) induction motor, 10 foot (3,1 meter) remote control and 5 gallon (19 liter) steel reservoir. Models available for operating single-acting or double-acting cylinders. Each power unit contains two separate pumps and two separate valves allowing operator to control multiple processes with one power unit. Both pumps on each power unit are equipped with an externally adjustable pressure relief valve. Not recommended for frequent starting and stopping.

The Power Team 30 series pump is intently ideal for maintenance and construction applications.  Operating both single-acting or double-acting cylinders. A dynamically built, Integral roll cage protects the 30 series pump from many forms of damage. 1 hp (0,75 kW), single phase, permanent magnet motor. High performance to weight ratio. Starts under full load even when voltage is reduced to 50% of nominal rating. Quit operations: 82 dBA @ 10,000 psi (700 bar) and 87 dBA @ 0 psi (0 bar). CSA rated for intermittent duty. Remote controls and/or solenoid valves feature 24 volt controls.

The Power Team 46 series is best suited for under the roof maintenance and production applications. Equipped with two-speed high-performance pump, for use with single- or double-acting cylinders at operating pressures to 10,000 psi (700 bar) the 46 series pump is versitile. With a 1 1⁄2 hp (1.12 kW), 3,450 (2,875) rpm single-phase, 60 (50) Hz thermal protected induction motor that starts under full load. Noise level of 77-81 dBA. All equipped with a 10 foot (3,1 m) remote control except PE462S which has a 25 foot (7,6 m) remote control. 24 volt control circuit on all units with remote control. CSA rated for intermittent duty.

A powerful multifaceted pump, the Power Team 55 pump excels at multiple applications. From heavy construction to concrete stressing this pump series is designed for intensity. With low voltage starting possible,  the 50/60 Hz universal motor; draws 25 amps at full load, and can start at reduced voltage. CSA rated for intermittent duty. 10 foot (3,1 m) remote motor control (except PE552S which has a 25 foot (7,6 m) remote motor and valve control). True unloading valve achieves greater pump efficiency, allowing higher flows at maximum pressure. Reservoirs available in sizes up to 10 gallons (38 liter). Lightweight and portable. Best weight-to-performance ratio of all Power Team pumps. “Assemble to Order” System: There are times when a custom pump is required. Power Team’s “Assemble to Order” system allows you to choose from a wide range of pre-engineered, off-the shelf components to build a customized pump to fit specific requirements. By selecting standard components you get a “customized” pump without “customized” prices. All pumps come fully assembled, add oil and ready for work.

A compact lightweight pump, the Power Team 60 series is designed for rugged applications and low voltage starting. Experiencing a long, trouble-free life in the most demanding work environments, the 60 series is durable.. Powered by 1 1⁄8 hp, 115 volt, 60/50 Hz (0,84 kW, 220 volt, 60/50 Hz) single phase motor. Starts under load, even at the reduced voltages at construction sites. Optional fan-driven external oil cooler includes rollover guard. Insulated carrying handle. Integral 4" (102 mm) diameter fluid-filled pressure gauge with steel bezel complies with ASME B40.1 Grade A. 0 to 10,000 psi (0 to 700 bar) pressure range in 100 psi (7 bar) increments. Sealed 3⁄4 gallon (4,34 liter (usable) reservoir. Reservoir drain port is standard. Standard oil level sight gauge for accurate oil level monitoring. External spin-on filter removes contaminants from circulating oil to maximize pump, valve and cylinder/tool life.

The Power Team PQ60 series pumps are designed specifically for heavy-duty, extended cycle operation. Integrating single- or double-acting cylinders the PQ60 series is versatile. Constructed for longevity by employing a metal shroud keeps dirt and moisture out of motor and electrical components. An electrical shut-down feature prevents unintentional restarting of motor following an electrical service interruption. Internal relief valve limits pressure to 10,000 psi (700 bar). External relief valve is adjustable from 1,000 to 10,000 psi (70 to 700 bar). The Power Team PQ60 pumps operate below maximum OSHA noise limitation (74-76 dBA). Start and operate under full load, even with voltage reduced by 10%.

The Power Team 120 series pump is exactingly designed for heavy duty, extended cycle operation up to 400 Ton. Built in grit, the series 120 pump can start and operate under full load, even with voltage reduced 10%. An electrical shut-down feature prevents unintentional restarting of motor following an electrical service interruption. Internal relief valve limits pressure to 10,000 psi (700 bar) and an external relief valve is adjustable from 1,000 to 10,000 psi (70 to 700 bar). Pump prewired at factory with a 3 hp, 460 volt, 60 Hz (2,24 kW, 380 volt, 50 Hz), 3 Phase motor. Other electrical configurations are available. 24 volt control circuits on units with remote controls for added user/operator safety. 3 hp (2,24 kW) 3 phase motor with thermal overload protection. Motor starter and heater element supplied as standard equipment; with an intentionally designed metal shroud to keep dirt and moisture out of motor and electrical components. Pumps operate below maximum OSHA noise limitation.

With high tonnage double-acting cylinders, the Power Team 400 series offers both single or multiple cylinder applications. Two-speed high output pump delivers up to 5 gpm (16 liter/min) of oil, with a low noise level of 73-80 dBA. Integral electrical shut-down feature prevents unintentional restarting of motor following an electrical service interruption. Over-current protection prevents damage to motor as a result of overheating. “Stop” and “Start” control buttons are 24 volt. PE4004 has a 4-way/3-position manual valve. The PE4004S has a 4- way/3-position solenoid valve with a 24 volt remote hand switch. External pressure relief valve is adjustable from 1,500 to 10,000 psi (100 to 700 bar). Heavy duty 4" (50,8 mm) diameter casters assure easy maneuvering. 20 gallon (3,927 cu. in. usable) / 75,7 liter (62,8 liter usable) reservoir has a low oil level sight gauge. Powered by a dual voltage 10 hp (7,46 kW), 3 phase, 1,725 (1,437) rpm motor. 3 phase motor has all the electrical components necessary to operate the pump.The customer has no hidden charges when making purchase. Deliver 1,200 cu. in./min. (16 liter/min) of oil @ 200 psi (15 bar), 420 cu. in./min. (5,6 liter/min) of oil @ 10,000 psi (700 bar).

Power team synchronized lifting and lowering system, the MCS ( motion controller system ) series can be used in many hydraulic applications where load position is critical, requiring cylinder synchronization. Whether it is a bridge, a building or any kind of heavy load, with the SPX FLOW power team motion control system, lifting, lowering, pushing, pulling, tilting or positioning loads can be carried out automatically with a high degree of accuracy. The PLC-controlled system is a combination of digital actuation and digital control providing significant advantages such as time savings, repeatability, and extremely low internal stress in the object one is moving. The system also provides documentation for the movement performed.

Extremely durable yet lightweight and operable under low-line voltage conditions, the Power Team PE-NUT series pumps are constructed for challenging conditions. A 115V 5/8 hp (0,46 kW) universal electric motor (50/60 cycle), employing a two-stage pump for efficiency and designed for use with spring-returned remote tools. The PE-NUT series pumps also feature high-pressure safety relief valve, remote hand control with 10-foot (3,1 meter) cord, and a pressure matched quick-coupler supplied. The PE-NUT series uniquely utilizes intermittent duty, piston-type high-pressure pump supercharged by a low-pressure pump. CAUTION: DESIGNED FOR CRIMPING APPLICATION ONLY! This system should not be used for lifting.

Gasoline power ideal for remote locations.  A logical choice at work sites where electricity or compressed air are unavailable. For single or double-acting cylinders at operating pressures up to 10,000 psi.  All gasoline engine/hydraulic pumps feature Posi-Check® valve to guard against pressure loss when valve is shifted from “advance” to “hold.”

PG303 is for single-acting cylinders, has a 9520 valve with separate internal return line which allows oil from running pump to return to reservoir, independently of cylinder return oil, when valve is in “return” position.

PG1200 Series pumps powered by a Honda 4-cycle, 5.5 hp engine with automatic decompression and electronic ignition. Deliver over 0.5 gallon (130 cu. in.) of oil per minute at 10,000 psi.

Rubber anti-skid insulation on bottom of reservoir resists skidding and dampens vibration. PG1200M-4 and PG1200M-4D include a pump cart with 12” wheels.

The Power Team HB series is purposefully constructed to convert low-pressure portable hydraulic pumps or on-board hydraulic systems, into high pressure power sources. HB series applications include utilities, railroads, construction, riggers and others. This product operates single or double-acting cylinders, jacks, and tools such as crimpers, spreaders, cable cutters, or tire tools. Version for use with double-acting torque wrenches available. May be used to operate two separate, single-acting tools (with integral valves) independently, without need for additional manifold. Control valve included. Other Power Team valves available as an option to suit your specific application, if needed; consult factory. Compact and rugged for use inside a utility vehicle aerial bucket or stowing in a vehicle. No reservoir level to maintain; uses low pressure system as oil supply. Has 3⁄8" NPTF ports; compatible with standard fittings for low and high pressure systems.

Portable two-speed pump operated in any position (open or closed-center) providing pressures up to 10,000 psi for the operation of high-pressure tools.

These compact, lightweight boosters do not have reservoirs. The units can be operated in any position on either open- or closed-center (accumulator) hydraulic systems.

“Assemble to Order” means you can choose a basic pump with gas, air or electric motor. Then select the proper valve, gauge, pressure control, motor control and reservoir. You get a two-stage pump that gives high oil volume for fast cylinder approach (and return with double-acting cylinders) in the first stage and high pressure in the second stage.

3 HP Jet Motor, Three-Phase.  Gives low noise level and long life due to its moderate operating speed. Ideal for fixed installations. Consists of basic 10,000 psi pump, jet pump motor: 3 hp, 3,450 rpm, 230/460VAC, 60 or 50 cycle (specify). AC three-phase, with thermal overload switch. Equipped with internal and external relief valve. Will start under load.

or cannot be used. The 5,000 or 10,000 psi pump has a 3 hp air-driven motor at 3,000 rpm (optimum performance based on 80 psi air pressure and 50 cfm at the pump). You can drive single or double-acting cylinders with the correct valve.  NOTE: 80 psi air supply required to start under full load.

unavailable. It is capable of continuous operation at full pressure. Consists of basic 10,000 psi pump, 4-cycle Briggs & Stratton “Diamond Edge” gasoline engine, developing 6 hp. As with all these pumps, this unit can be valved for use with either single or double-acting cylinders.

This hydraulic pump is a double-acting power unit for both lifting and lowering. It has a 20-quart sturdy metal reservoir and is designed with a 12V DC motor that can provide strong power for hydraulic systems like dump trailers, forklifts, lifting platforms, etc.

This double-acting hydraulic power unit has a 12V DC motor (Power:1.6-3.0kw) and a 20-quart metal reservoir; it has SAE#6 ports with 3200 PSI max relief setting on A and 1500 PSI on B port. Rated speed: 2850 r/min.

Our hydraulic electric pump has been fully assembled. It comes with a hand-held remote control and 2 additional SAE#6 connectors for replacement. The whole power unit is easy to wire and easy to operate.

With the powerful 12V DC electric motor, our hydraulic pump for dump trailers can start rapidly and provide quick oil output. In addition, it can provide strong power that will lift heavy objects in a short period.

You can rely on the quality of this electric hydraulic pump as it is made of special-treated sturdy metal, and the whole structure has been reinforced. It is also equipped with a powerful electric motor that you can use as often as you like.

All of our 12-volt hydraulic power units have been pre-assembled before delivery, and we provide instructions for operation so that you can install and use the hydraulic pump easily. Horizontal mount is recommended.

As a great power unit, this hydraulic pump can be used for many things, such as truck tailgate lift, RV leveling, scissor lift, dump trailers, lift truck, snowplow, aerial platform, road signs, material handling, wheelchair lifts, etc.

•“Assemble to Order” System: There are times when a custom pump is required. Power Team’s “Assemble to Order” system allows you to choose from a wide range of pre-engineered, off-the shelf components to build a customized pump to fit specific requirements. By selecting standard components you get a “customized” pump without “customized” prices. All pumps come fully assembled, add oil and ready for work.

From inflatable jacks, hydraulic pumps, cylinders and valves to clamping components and hydraulic accessories, Power Team brand high-force tools and equipment are used wherever strong, concentrated force is required ― on construction sites, in power plants, on rail lines, in shipyards, in mining operations and more.

Located in the United States in Rockford, Illinois, the Power Team brand is marketed by SPX FLOW Inc. in 155 countries. Global sales and manufacturing offices are located in the United Kingdom; the Netherlands; Shanghai and Suzhou, China; and Singapore. The Power Team brand is sold through a worldwide network of stocking industrial distributors. Service is available throughout the world at authorized Power Team Hydraulic Service Centers.

air-driving action is the same as the Sprague air driven S-216-J series hydraulic pumps described on page 18. Being air driven, these double-acting pumps are non-arcing and non-sparking, safe for use in hazardous or confined areas.

Services oil and non-corrosive liquids. Not for water service. With a 6.8 pumping ratio, this double-acting pump is well suited for liquid transfer, low pressure hydrostatic testing and other industrial uses.

This pump discharges volume liquids up to 12 gallons per minute and provides for selected discharge pressures up to 680 psi. With its liquid body and main components made from anodized aluminum alloy, the pump is reduced in weight and lower in cost. The standard pump’s special seals in the wetted section are compatible with a wide range of chemicals while other seals in the pump are nitrile. Other seal compounds are optional.

Services oil, water and many corrosive liquids. With a 34 to 1 pumping ratio, this double-acting pump discharges volume liquids at any selected pressure up to 3,400 psi, suitable to many industrial applications requiring volume liquid delivery at higher pressures and holding cycles.

This pump uses an internal check valve in its liquid piston head, to obtain a double-acting, steady flow of liquid. This unique design results in higher pressures and uses material resistant to many corrosive liquids. The pump has special dynamic seals to accommodate low lubricity liquids. The pump body is brass.

Services oil and non-corrosive liquids. Not for water service. Its general design is identical to the S-216-JD-34 pump described above. The -36 pump has an aluminum body which significantly lowers the price of the pump and reduces its weight by four pounds. The pump has nitrile seals.

Check that the pump shaft is rotating. Even though coupling guards and C-face mounts can make this difficult to confirm, it is important to establish if your pump shaft is rotating. If it isn’t, this could be an indication of a more severe issue, and this should be investigated immediately.

Check the oil level. This one tends to be the more obvious check, as it is often one of the only factors inspected before the pump is changed. The oil level should be three inches above the pump suction. Otherwise, a vortex can form in the reservoir, allowing air into the pump.

What does the pump sound like when it is operating normally? Vane pumps generally are quieter than piston and gear pumps. If the pump has a high-pitched whining sound, it most likely is cavitating. If it has a knocking sound, like marbles rattling around, then aeration is the likely cause.

Cavitation is the formation and collapse of air cavities in the liquid. When the pump cannot get the total volume of oil it needs, cavitation occurs. Hydraulic oil contains approximately nine percent dissolved air. When the pump does not receive adequate oil volume at its suction port, high vacuum pressure occurs.

This dissolved air is pulled out of the oil on the suction side and then collapses or implodes on the pressure side. The implosions produce a very steady, high-pitched sound. As the air bubbles collapse, the inside of the pump is damaged.

While cavitation is a devastating development, with proper preventative maintenance practices and a quality monitoring system, early detection and deterrence remain attainable goals. UE System’s UltraTrak 850S CD pump cavitation sensor is a Smart Analog Sensor designed and optimized to detect cavitation on pumps earlier by measuring the ultrasound produced as cavitation starts to develop early-onset bubbles in the pump. By continuously monitoring the impact caused by cavitation, the system provides a simple, single value to trend and alert when cavitation is occurring.

The oil viscosity is too high. Low oil temperature increases the oil viscosity, making it harder for the oil to reach the pump. Most hydraulic systems should not be started with the oil any colder than 40°F and should not be put under load until the oil is at least 70°F.

Many reservoirs do not have heaters, particularly in the South. Even when heaters are available, they are often disconnected. While the damage may not be immediate, if a pump is continually started up when the oil is too cold, the pump will fail prematurely.

The suction filter or strainer is contaminated. A strainer is typically 74 or 149 microns in size and is used to keep “large” particles out of the pump. The strainer may be located inside or outside the reservoir. Strainers located inside the reservoir are out of sight and out of mind. Many times, maintenance personnel are not even aware that there is a strainer in the reservoir.

The suction strainer should be removed from the line or reservoir and cleaned a minimum of once a year. Years ago, a plant sought out help to troubleshoot a system that had already had five pumps changed within a single week. Upon closer inspection, it was discovered that the breather cap was missing, allowing dirty air to flow directly into the reservoir.

A check of the hydraulic schematic showed a strainer in the suction line inside the tank. When the strainer was removed, a shop rag was found wrapped around the screen mesh. Apparently, someone had used the rag to plug the breather cap opening, and it had then fallen into the tank. Contamination can come from a variety of different sources, so it pays to be vigilant and responsible with our practices and reliability measures.

The electric motor is driving the hydraulic pump at a speed that is higher than the pump’s rating. All pumps have a recommended maximum drive speed. If the speed is too high, a higher volume of oil will be needed at the suction port.

Due to the size of the suction port, adequate oil cannot fill the suction cavity in the pump, resulting in cavitation. Although this rarely happens, some pumps are rated at a maximum drive speed of 1,200 revolutions per minute (RPM), while others have a maximum speed of 3,600 RPM. The drive speed should be checked any time a pump is replaced with a different brand or model.

Every one of these devastating causes of cavitation threatens to cause major, irreversible damage to your equipment. Therefore, it’s not only critical to have proper, proactive practices in place, but also a monitoring system that can continuously protect your valuable assets, such as UE System’s UltraTrak 850S CD pump cavitation senor. These sensors regularly monitor the health of your pumps and alert you immediately if cavitation symptoms are present, allowing you to take corrective action before it’s too late.

Aeration is sometimes known as pseudo cavitation because air is entering the pump suction cavity. However, the causes of aeration are entirely different than that of cavitation. While cavitation pulls air out of the oil, aeration is the result of outside air entering the pump’s suction line.

Several factors can cause aeration, including an air leak in the suction line. This could be in the form of a loose connection, a cracked line, or an improper fitting seal. One method of finding the leak is to squirt oil around the suction line fittings. The fluid will be momentarily drawn into the suction line, and the knocking sound inside the pump will stop for a short period of time once the airflow path is found.

A bad shaft seal can also cause aeration if the system is supplied by one or more fixed displacement pumps. Oil that bypasses inside a fixed displacement pump is ported back to the suction port. If the shaft seal is worn or damaged, air can flow through the seal and into the pump’s suction cavity.

As mentioned previously, if the oil level is too low, oil can enter the suction line and flow into the pump. Therefore, always check the oil level with all cylinders in the retracted position.

If a new pump is installed and pressure will not build, the shaft may be rotating in the wrong direction. Some gear pumps can be rotated in either direction, but most have an arrow on the housing indicating the direction of rotation, as depicted in Figure 2.

Pump rotation should always be viewed from the shaft end. If the pump is rotated in the wrong direction, adequate fluid will not fill the suction port due to the pump’s internal design.

A fixed displacement pump delivers a constant volume of oil for a given shaft speed. A relief valve must be included downstream of the pump to limit the maximum pressure in the system.

After the visual and sound checks are made, the next step is to determine whether you have a volume or pressure problem. If the pressure will not build to the desired level, isolate the pump and relief valve from the system. This can be done by closing a valve, plugging the line downstream, or blocking the relief valve. If the pressure builds when this is done, there is a component downstream of the isolation point that is bypassing. If the pressure does not build up, the pump or relief valve is bad.

If the system is operating at a slower speed, a volume problem exists. Pumps wear over time, which results in less oil being delivered. While a flow meter can be installed in the pump’s outlet line, this is not always practical, as the proper fittings and adapters may not be available. To determine if the pump is badly worn and bypassing, first check the current to the electric motor. If possible, this test should be made when the pump is new to establish a reference. Electric motor horsepower is relative to the hydraulic horsepower required by the system.

For example, if a 50-GPM pump is used and the maximum pressure is 1,500 psi, a 50-hp motor will be required. If the pump is delivering less oil than when it was new, the current to drive the pump will drop. A 230-volt, 50-hp motor has an average full load rating of 130 amps. If the amperage is considerably lower, the pump is most likely bypassing and should be changed.

Figure 4.To isolate a fixed displacement pump and relief valve from the system, close a valve or plug the line downstream (left). If pressure builds, a component downstream of the isolation point is bypassing (right).

The most common type of variable displacement pump is the pressure-compensating design. The compensator setting limits the maximum pressure at the pump’s outlet port. The pump should be isolated as described for the fixed displacement pump.

If pressure does not build up, the relief valve or pump compensator may be bad. Prior to checking either component, perform the necessary lockout procedures and verify that the pressure at the outlet port is zero psi. The relief valve and compensator can then be taken apart and checked for contamination, wear, and broken springs.

Install a flow meter in the case drain line and check the flow rate. Most variable displacement pumps bypass one to three percent of the maximum pump volume through the case drain line. If the flow rate reaches 10 percent, the pump should be changed. Permanently installing a flow meter in the case drain line is an excellent reliability and troubleshooting tool.

Ensure the compensator is 200 psi above the maximum load pressure. If set too low, the compensator spool will shift and start reducing the pump volume when the system is calling for maximum volume.

Performing these recommended tests should help you make good decisions about the condition of your pumps or the cause of pump failures. If you change a pump, have a reason for changing it. Don’t just do it because you have a spare one in stock.

Conduct a reliability assessment on each of your hydraulic systems so when an issue occurs, you will have current pressure and temperature readings to consult.

Al Smiley is the president of GPM Hydraulic Consulting Inc., located in Monroe, Georgia. Since 1994, GPM has provided hydraulic training, consulting and reliability assessments to companies in t...

A hydraulic hand pump is a simple, yet essential piece of equipment used in a variety of industries. They are vital for many force applications – especially in construction, manufacturing, and maintenance operations.

However, with so many different models on the market, it can be difficult to know which is best suited to your type of work. This guide will help you understand the different pump types and their features.

Before you go ahead and buy a hydraulic hand pump, it’s important to do your research and understand their differences. With so many to choose from, you will want to compare features and prices. It is also a good idea to assess the quality of the product and if it’s made by a reputable manufacturer.

A hydraulic hand pump does a simple job, which is to deliver pressurized hydraulic flow to a tool and then return it back to the pump reservoir. But that doesn’t mean you should take shortcuts and opt for the first one that appears in your internet search results. There are a few simple but important considerations to take on board that will steer you towards the right product.

When you are choosing a hydraulic hand pump, it is important to prioritize quality over price. A high-quality Enerpac pump will last longer and be more reliable than a cheaper model. You will save money in the long run as you won’t need to replace it for many years.

With each stroke of the handle on a single-speed hydraulic pump, hydraulic oil is drawn from the pump reservoir towards the tool by the same amount. For many applications, this simpler and lower-cost option is fine. But for projects needing greater flow, for example when oil is to be pumped to a large hydraulic cylinder (or multiple cylinders), a single-speed pump can be hard work.

The alternative is a 2 stage hydraulic pump (2 speed), which has the added advantage of delivering high flow at lower working pressures. This gets you faster to the point where the real work begins. It then automatically delivers low flow at high pressure just at the time when you need more control. Compared to a single-speed pump, some two-speed types can reduce the number of handle strokes by as much as 78%! For a more in-depth comparison read our other blog post.

Hydraulic hand pumps are available in a wide range of oil capacities. A small model typically has a usable capacity of around 20 in3 (327 cm3), but there are some with as much as 453 in3 (7423 cm3). A larger reservoir will give you more options but will obviously make the pump much heavier, so think about how much oil is really needed for the applications you intend to carry out.

Most Enerpac Hydraulic Hand Pumps can withstand pressures up to 10,000 psi (700 bar), but this isn’t always necessary. For lower working pressures up to 5,000 psi (350 bar) the P18 is a cost-effective single-speed option. However, if you need a 2 stage hydraulic pump go for the P1425000.

When it comes to the materials used for the main body of the pump, you have the choice of steel or glass-filled nylon. There’s plenty of configurations available in both types, so it really comes down to your personal preferences, weight, and the working environment. Metal-bodied pumps are the traditional tried and tested option that offer reassurance to many people. However, glass-filled nylon reservoirs are also incredibly durable, and these offer an unrivalled combination of strength, weight, and resistance to corrosion. A glass-filled nylon pump will be a few pounds lighter than steel equivalents.

A double-acting cylinder gives you a faster and more controlled plunger retraction, but you will need a pump designed specifically for this purpose. Take a look at the P842, P84, and P464 models.

Safety should always be the number one concern, so choosing a good quality pump from a reputable manufacturer is an essential first step. Some features and tips relating to safety include;

When working in extreme environments such as the oil & gas, or petrochemical industries, a hydraulic pump may be exposed to corrosive substances and extreme temperatures. For these situations consider pumps with corrosion-resistant materials such as stainless steel, nickel-plated valves and cylinders, anodization, and plastic-encapsulated metals. Viton® Seals will also offer heat and chemical resistance.

Would a foot pump suit you better? If crouching to activate your hand pump is an issue, or if you want to keep your hands free then a foot pump could be a good alternative option. Look at the P392FP which is a 2 stage foot pump with a robust steel frame.

For ad-hoc projects, a hand pump is likely to be the right choice. But for frequent and repetitive projects – and especially those with multiple cylinders a powered pump could be much better for you. Plug in electric and compressed air hydraulic pumps are common. For remote locations without mains power or a compressed airline the choices are battery and gasoline-driven pumps.

If your work involves using hydraulic cylinders buying a cylinder and pump set is a quick and easy way to get what you need, without the hassle of buying components separately. A set typically includes a single-acting hydraulic cylinder (aka a jack or ram), a two-speed pump, a 6-foot hose, calibrated gauge, and a gauge adaptor. Cylinder capacities vary from 5 to 100 tons and the pump options include hand or foot-operated models.

You can locate your nearest Enerpac distributor on our website. Or if you are based in the United States you can order your pump online directly from Enerpac.

Most people reading this article will be technical-minded engineers with a clear idea of the intended applications. With these projects in mind and an understanding of the key points we’ve covered above, hopefully, you will be in a good position to select the best hydraulic hand pump for your future projects. Here is a summary of the key considerations:

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Parker"s Hydraulic Pump and Power Systems Division provides a broad selection of piston pumps, hydraulic motors and power units that help our customers meet their industrial and mobile application needs. Our division is the result of the Parker piston pump business’s acquisition of Denison Hydraulics and merger with the Parker Oildyne Division. Reach higher hydraulic working pressures, get better reliability, higher efficiencies, and achieve lower operating costs and improved productivity on your heavy-duty equipment with Parker’s line of piston pumps and vane pumps, electro-hydraulic actuators, hydraulic motors and power units, piston motors and hydrostatic transmissions.