ATOS PVPC-C-5073 piston pump from Italy is in stock.

Brand

ATOS/Italian Atos

Application Areas

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

The main causes of oil leakage in Italian ATOS piston 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 housing.

Working Principle of Italian ATOS Piston Pumps

The Italian ATOS piston pump is an important device in a hydraulic system. It relies on the reciprocating motion of the piston in the cylinder to change the volume of the sealed working cavity to achieve oil suction and pressure. Piston pumps, with their advantages of high rated pressure, compact structure, high efficiency, and convenient flow regulation, are widely used in high-pressure, high-flow, and flow-adjustable applications, such as hydraulic presses, construction machinery, and ships.

The Italian ATOS piston pump is a type of reciprocating pump, belonging to the category of volumetric pumps. Its piston is driven by the eccentric rotation of the pump shaft, resulting in a reciprocating motion. Both its suction and discharge 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 piston out of or pushes it back into the cylinder block, completing the suction and discharge process. The oil in the working chamber formed by the piston and cylinder bore communicates with the pump's suction and discharge chambers through a distribution plate. A variable displacement mechanism is used to change the swashplate angle; adjusting the swashplate angle changes the pump's displacement.

The ATOS plunger pump features a grooved surface on the cylindrical plunger head, connected to the top via radial and axial holes. This design alters the circulating fuel supply. The plunger sleeve has inlet and outlet ports, both communicating with the low-pressure oil chamber within the pump body. After the plunger sleeve is installed in the pump body, it is secured with a locating screw.

The method of altering the fuel supply varies depending on the position of the groove on the plunger head.

The ATOS plunger pump's delivery valve and valve seat are also a precision pair, mated and ground together, and cannot be interchanged. Their clearance is 0.01 mm.

The ATOS plunger pump's delivery valve is a one-way valve. Under spring pressure, the upper conical surface of the valve fits tightly with the valve seat. Its function is to isolate the high-pressure fuel line from the upper cavity of the plunger when fuel supply stops, preventing backflow of fuel from the high-pressure line into the injection pump.

The lower part of the ATOS plunger pump's delivery valve has a cross-shaped cross section, serving both as a guide and allowing diesel fuel to pass through. Below the conical surface of the delivery valve is a small cylindrical surface called a pressure-reducing ring. Its function is to rapidly reduce the oil pressure in the high-pressure oil pipe at the end of the oil supply, preventing dripping at the nozzle. When the ring falls into the valve seat, the upper volume rapidly increases, the pressure rapidly decreases, and the spray stops quickly.

Model table of ATOS plunger pump:

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-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 mainly deals with European and American brands and can source brands from any European country. For example, our 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