PARKER pressure control valve R8443E-6D2 in stock

Brand

PARKER/American Parker

Application Areas

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

PARKER Pressure Control Valve Parameters

PARKER pressure control valves are available in hydraulic and pneumatic versions, but the principles are almost identical. Here, we'll discuss the hydraulic version.

Valve Structure:

1—Adjusting Screw; 2—Valve Body; 3—Pressure Adjusting Spring; 4—Deflector Plate; 5—Cone Valve; 6—Damping Piston

Functions

The damping piston serves two purposes: first, it dampens the opening and closing of the cone valve, improving the valve's pressure regulation stability; second, it guides the cone valve, improving its sealing performance.

The deflector plate's function: The deflector plate has an annular groove to change the direction of fluid flow at the cone valve's outlet. This results in a hydraulic force acting on the deflector plate, which is opposite to the spring force and increases with increasing overflow. When the overflow increases, the cone valve opening widens, causing an increase in spring force. However, because the hydraulic force also increases simultaneously, the structure offsets the increase in spring force. Therefore, the inlet pressure of this type of valve is unaffected by flow rate changes, its p-Q characteristic curve is relatively ideal, and its opening and closing characteristics are good, which is beneficial for increasing the valve's rated flow rate.

Analysis of the application of control methods for PARKER pressure control valves (USA)

1) Acting as a Parker safety valve (preventing hydraulic system overload): When the relief valve acts as a safety valve, it limits the maximum pressure of the hydraulic system to ensure system safety. Under normal system operation, the valve is closed and does not overflow; the system's working pressure is determined by the external load. When the system pressure reaches the valve's set pressure, the valve opens to overflow, and the system pressure is then determined by the relief valve's set pressure.

2) Acting as a Parker relief valve (maintaining constant hydraulic system pressure): In throttling speed control systems, the relief valve is normally open during normal operation, overflowing excess oil back to the tank to maintain a basically constant hydraulic system pressure.

3) Unloading the Parker hydraulic system: The remote control port of the pilot-operated relief valve is connected to the tank, allowing the system to be unloaded using the relief valve. The DBW-type pilot-operated solenoid relief valve can achieve system unloading using its own solenoid directional valve. Other pilot-operated relief valves require an additional directional valve to be added to the remote control port for system unloading.

4) Remote Pressure Regulation: Connecting a remote pressure regulating valve to the remote control port of the pilot-operated relief valve enables remote pressure regulation.

Furthermore, the relief valve can also be used as a back pressure valve to ensure smooth system operation; in conjunction with a directional valve, it can achieve multi-stage pressure control; in braking circuits, it can provide braking; and in hydraulic test bench systems, it can be used as a loading valve, etc.

R8041E-1/2HS2 R8041E-1/4HS2 R8041E-3/8HS2 R8071E-8HS2 R8142E-6HS2 R8443E-6D2 R8453E-6D2 R8541E-1/2HD2 SB0117 SB0132 SCK-102-05-02 SC10MB SC10MH SC3PB SC3PF SC3PFV SC3PH SC3PM SC6MB SC6MF SC6MH SC6MH-V SC6MM SC6PF SC6PFV SC6PH SC6PM SEMTAATTVA1.8 SE10SAAFAVA5 SE10SAAFBVA5 SE15HAAFAVA5 SE15SAACAVA10 SE15SAAFAVA15 SE15SAAFAVA15S0010 SE15SAAFBNA11S0016 SE15SAAFBVA15 SE20HAAHPNA2.5 SE20HAAHPVA10 SE20HAAHPVA2.5 SE20HAAHPVA5 SE20HMABANA2.5 SE20SAAABNA10 SE20SAAFBNA1 SE20SAAFBNA10 SE20SAAFBNA16.5 SE20SAAFBNA2.5 SE20SAAFBNA20 SE20SAAFBNA5 SE20SAAFPNA10 SE20SAAFPVA10 SE20SAAHPNA2.5 SE20SAAHPNA5 SE20SAAHPVA10 SE20SAAHPVA5 SE20SAAMBVA5 SE20SASLBVA5 SE20SCAFPVA16.5S0005 SE20SCAHPNA20 SE31SAAAANA15 SE31SAAHANA20 SE31SAAHANA20S0018 SE31SAAMBVA5S0011 SE31SCABANA15 SE60SAAFBNA60 SE60SAAFBNB60 SE60SAAFBVA40 SE60SAAFBVA60 SE60SCAMBNB60 SHCS02500500CS SHCS03120500CS SHCS10240375CS SK-C13DB10-E400 SK-C13DB10-E630 SK-DSDB10E16V SK-PE10MN10 SK-PE10MV10 SK-SVLC4E70 SK-SVWD4-E50 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