Technical characteristics
This is a 3-port, normally open regulating element with integrated pilot stage control jack. It is a pilot operated, pressure reducing/relief main stage pressure reducing valve with integrated T-8A control jack. This valve regulates and reduces the inlet (port 2) high pressure main line pressure to the required reduced pressure at port 1, while providing full flow relief from port 1 to the tank (port 3). The setting of the pilot stage control valve determines the pressure drop between the pressure reducing port (port 1) and the tank (port 3). The pressure at port 3 is increased directly to the valve setting in a 1:1 ratio and must not exceed 3000 psi (210 bar), with the maximum inlet pressure determined by the bias spring .
For those with the - 8 control option, the main stage valve should be installed first with the correct torque, then the T - 8A pilot stage control valve should be installed into the main stage valve with the appropriate torque. - The -8 control type allows the pilot operated control valve to be screwed directly into the top of the relief valve through the T-8A socket. These pilot operated control valves are purchased separately and include electro-proportional, solenoid, pneumatic pilot, and hydraulic pilot operation. Cartridge valves equipped with EPDM seals can be used in phosphate ester hydraulic systems, however, exposure to petroleum-based hydraulic oils or greases will damage the seals. All 3-port pressure reducing valves and pressure reducing/relief valves are dimensionally interchangeable (e.g., same flow path, same socket for a given form factor). When considering the installation configuration, the return line (port 3) of the pressure reducing/relief valve has a nominal flow capacity, and reverse flow from the pressure reducing port (port 1) to the inlet (port 2) may cause the main spool to close .
Areas of application
Can be used in machine tools, construction machinery, ships, sanitation equipment, agriculture and other industries for hydraulic system related equipment