Parker piston pump PV016R1K1T1NMMC in stock

Brand

PARKER/American Parker

Application Areas

Chemical, Petroleum, Energy, Road/Rail/Marine, Comprehensive

What are the flow problems of Parker plunger pumps?

(1) Insufficient suction. This is caused by excessive resistance in the suction line or insufficient replenishment. For example, excessive pump speed, low oil level in the tank, air leakage in the inlet pipe, or clogged oil filter.

(2) Excessive leakage. This is caused by excessive pump clearance and poor sealing. For example, the distributor plate may be scratched by metal fragments or iron filings, resulting in end-face leakage; the check valve sealing surface in the variable displacement mechanism may not be properly fitted; and there may be sand holes or scratches on the support surfaces of the pump body and distributor plate. The damaged part of the pump can be identified by checking for foreign matter mixed in the hydraulic oil within the pump body.

(3) The swashplate angle is too small, resulting in low pump displacement. This requires adjusting the variable displacement piston to increase the swashplate angle. Non-zero discharge at neutral position

The neutral position of a variable displacement axial piston pump is when the swashplate angle is zero, at which point the pump's output flow should be zero. However, sometimes the neutral position deviates from the midpoint of the adjustment mechanism, and there is still flow output at the midpoint. This is caused by misalignment, loosening, or damage to the controller, requiring readjustment, tightening, or replacement. Insufficient pump angle holding force and wear on the tilt angle trunnion can also cause this phenomenon.

Output flow fluctuation

Output flow fluctuation is related to many factors. For variable displacement pumps, it can be considered to be caused by poor control of the variable mechanism, such as foreign objects entering the variable mechanism, scratching, abrasions, or damage on the control piston, causing unstable control piston movement. Insufficient amplifier power or damaged parts, and poor damping efficiency of control pistons containing springs, can all cause unstable control piston movement. Unstable flow is often accompanied by pressure fluctuations. This type of fault generally requires disassembling the hydraulic pump, replacing damaged parts, increasing damping, increasing spring stiffness, and increasing control pressure.

Abnormal output pressure

The pump's output pressure is determined by the load and is approximately proportional to the input torque. There are two types of abnormal output pressure faults.

(1) Low Output Pressure

When the pump is in self-priming mode, if there is air leakage in the inlet line or significant leakage in the hydraulic cylinder, check valve, or directional valve in the system, the pressure will not rise. This requires finding the leak, tightening, or replacing the seals to increase the pressure. If the relief valve is faulty or the adjusted pressure is too low, the system pressure will also not rise; the pressure should be readjusted or the relief valve repaired. If the hydraulic pump cylinder body and distributor plate are misaligned, causing significant leakage, the cylinder body may crack in severe cases; in this case, the mating surfaces should be re-ground or the hydraulic pump replaced.

(2) High Output Pressure

If the circuit load continues to increase, the pump pressure will also continue to increase, which is normal. If the load is constant and the pump pressure exceeds the required load value, the hydraulic components other than the pump, such as the directional valve, pressure valve, transmission device, and return oil line, should be checked. If the maximum pressure is too high, the relief valve should be adjusted.

Vibration and Noise

Vibration and noise occur simultaneously. They not only harm the machine operator but also pollute the environment. (1) Mechanical Vibration and Noise

Noise can be generated by misalignment or jamming of the pump shaft and motor shaft, damage to bearings and couplings of the rotating shaft, broken elastic pads, and loose assembly bolts. For pumps operating at high speeds or transmitting large amounts of energy, regular inspections are necessary to record the amplitude, frequency, and noise of each component. If the pump's rotational frequency is the same as the natural frequency of the pressure valve, resonance will occur; the pump's speed can be changed to eliminate resonance.

(2) Noise Generated by Fluid Flow in Pipelines

Noise can be generated by a narrow inlet pipe, insufficient flow capacity or blockage of the inlet filter, air intake in the inlet pipe, excessively high oil level, insufficient oil suction due to low oil level, and liquid slugging in high-pressure pipelines. Therefore, proper design of the oil tank and correct selection of filters, oil pipes, and directional valves are essential.

Hydraulic Pump Overheating

There are two reasons for excessive heating of hydraulic pumps: one is heat generated by mechanical friction. Heat is generated by the friction between moving parts due to dry or semi-dry friction on the moving surfaces. The other is heat generated by fluid friction. High-pressure oil leaks into the low-pressure chamber through various gaps, resulting in a significant loss of hydraulic energy converted into heat. Therefore, correctly selecting the clearances between moving parts, the tank volume, and the cooler can prevent excessive pump overheating and oil temperature rise. Additionally, a clogged return oil filter causing excessive back pressure can also lead to high oil temperature and pump overheating.

Oil Leakage

Parker Piston Pump

The Parker piston pump is a new type of high-efficiency pump with advanced technology. With the increasing localization of domestic production, radial piston pumps will inevitably become an important part of piston pump applications. For details, please refer to the radial piston pump encyclopedia; the following explanation uses the axial piston pump as an example.

The Parker piston pump is a type of reciprocating pump, belonging to the category of volumetric pumps. Its pistons are driven by the eccentric rotation of the pump shaft, reciprocating in motion. Both its inlet and outlet valves are one-way valves. When the piston is pulled outward, the pressure in the working chamber decreases, the outlet valve closes, and when the pressure is lower than the inlet pressure, the inlet valve opens, allowing liquid to enter. When the piston is pushed inward, the pressure in the working chamber increases, the inlet valve closes, and when the pressure is higher than the outlet pressure, the outlet valve opens, allowing liquid to exit. When the drive shaft rotates the cylinder block, the swashplate pulls the plunger out or pushes it back into the cylinder block, completing the oil suction and discharge process. The oil in the working chamber formed by the plunger and cylinder bore communicates with the pump's suction and discharge chambers via a distribution plate. A variable displacement mechanism is used to change the swashplate's angle; adjusting the swashplate's angle changes the pump's displacement.

Parker PV series plunger pumps (German-made, high-quality) are available with either a standard pressure regulator or a power regulator. Maximum displacement ranges from 16 to 270 ml/rev, rated operating pressure is 350 bar, minimum speed is 300 rpm, and the drain port faces upwards.

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Original Parker piston pump PV016R1K1T1NMMK PV016R1K1T1NMMK 4545

PV016R1K1T1NMMW PV016R1K1T1NMMW 4545

PV016R1K1T1NMMZ PV016R1K1T1NMMZ 4545

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PV016R1K1T1NUPEX5897AXIAL PISTON PUMP

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PV016R1K1T1NUPPX5897AXIAL PISTON PUMP

PV016R1K1T1NUPPX5935AXIAL PISTON PUMP

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PV016R1K1T1N001PV016R1K1T1N00145

PV016R1K1T1N100PV016R1K1T1N10045

PV016R1K1T1N2L1AXIAL PISTON PUMP

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PV016R1K1T1VMMCPV016R1K1T1VMMC4545

Parker PV series piston pumps are available with standard pressure regulators and power regulators. Maximum displacement ranges from 16 to 270 ml/rev, rated operating pressure is 350 bar, minimum speed is 300 rpm, and drain port faces upwards. Models include: PV016, PV020, PV023, PV032, PV040, PV046, PV063, PV080, PV092, PV140, PV180, PV270, etc.

Company

The company primarily deals in European and American brands and can source brands from any European country. For example, key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi