ATOS piston pump PFEX2 32022/31016/3DT in stock

Brand

ATOS/Italian Atos

Application Areas

Chemical, Petroleum, Mining, Road/Rail/Shipbuilding, Comprehensive

ATOS Piston Pump Troubleshooting:

(1) Insufficient suction. 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. Caused by excessive pump clearance and poor sealing. For example, scratches on the distributor plate by metal fragments or iron filings, resulting in end-face leakage; poor fit of the check valve sealing surface in the variable displacement mechanism; 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) Insufficient swashplate angle results 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 an ATOS piston pump is defined as the swashplate angle being 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 flow is still output even 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.

ATOS piston pump output flow fluctuations

ATOS piston pump output flow fluctuations are related to many factors. For variable displacement pumps, this can be attributed to poor control of the variable displacement mechanism, such as foreign objects entering the mechanism, causing scratches, wear, or damage on the control piston, resulting in unstable piston movement. Insufficient amplifier power or damaged parts, and poor damping efficiency in spring-loaded control pistons, can also cause unstable piston movement. Unstable flow is often accompanied by pressure fluctuations. These types of faults generally require disassembling the hydraulic pump, replacing damaged parts, increasing damping, improving spring stiffness, and increasing control pressure.

Abnormal Output Pressure of ATOS Piston Pump

The output pressure of an ATOS piston pump is determined by the load and is approximately proportional to the input torque. There are two types of abnormal output pressure:

(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 rise, 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 directional valves, pressure valves, transmission devices, and return lines, should be checked. If the maximum pressure is too high, the relief valve should be adjusted. Oil Leakage

The main causes of oil leakage in ATOS plunger pumps are as follows:

(1) Damaged spindle oil seal or defective/scratched shaft;

(2) Excessive internal leakage, causing increased pressure at the oil seal, which damages or blows out the seal;

(3) Excessively thin or long drain pipe, causing leakage at the seal;

(4) Loose external oil pipes, damaged pipe joints, aged or cracked gaskets;

(5) Loose bolts in the variable adjustment mechanism, resulting in seal damage;

(6) Sand holes or poor welding in the cast iron pump casing.

Key features of the Italian ATOS plunger pump:

Double plunger structure, low pressure pulsation, long sapphire ball life;

Imported sapphire plungers and sapphire balls ensure accurate flow;

Communicates with a computer via RS232 interface, allowing direct computer control;

Contact media materials are resistant to organic solvent corrosion;

Built-in overpressure protection and flow correction system;

Large LCD display;

Carefully designed venting device effectively removes air bubbles from the pumped liquid. Flow and pressure settings can be memorized; communication with PLC is possible (customization available).

ATOS Piston Pump Model List:

PVPC-CH-5073

PVPC-CH-5090

PVPC-R-3029

PVPC-R-4046

PVPC-R-5073

PVPC-R-5090

PVPC-L-3029

PVPC-L-4046

PVPC-L-5073

PVPC-L-5090

PVPC-LW-3029

PVPC-LW-4046

PVPC-LW-5073

PVPC-LW-5090

PVPC-LQZ-5073/1D 11

PVPC-LW-4046/1D 10

PVPC-LZQZ-3029/1D

PVPC-LZQZ-3029/1D/18

PVPC-LZQZ-4046/1D

PVPC-LZQZ-4046/1D/18

PVPC-LZQZ-5073/1D 11

PVPC-LZQZ-5073/1D/18

PVPC-R-3029/1D 11

PVPC-R-4046/1D 11

PVPC-SLE-3029/10 20

PVPC-SLE-4046/1D 20

PVPCX2E-C-3029/31036/1D 10

PVPCX2E-LW-3029/31036/1D 10 The company primarily deals in European and American brands, and can source brands from any European country. For example, its key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, HIRSCHMANN industrial switches, Henschler, MURR, SCHMERSAL, SAMSON, and EPRO (a subsidiary of Emerson).

American brands include MOOG, ASCO solenoid valves, MAC solenoid valves, NUMATICS, PARKER pneumatics and hydraulics, VICKERS, and ROSS.

British brands include Norgren. Italian brands OMAL, ATOS, CAMOZZI, UNIVER, and Camozzi.