SR4P2-B2 Proportional Pressure Relief Valve, Pilot Operated

Screw-in cartridge proportional pressure relief valve, pilot operated. The complete valve consists of a pilot stage - valve SR1P2-A2 and a main stage with connection thread 7/8-14 UNF. The valve maintains the constant pressure in the circuit proportional to the input command signal. The valve does not have a mechanical stroke limitation and thus cannot be used as a safety valve. Air bleeding is necessary for the correct function of the valve.
Installation: When possible, the valve should be mounted below the reservoir oil level. This will maintain oil in the actuator, preventing instability caused by air in the system. If possible, to achieve the best result, mount the valve vertically above the bleed screw and ensure proper air bleeding.
Note: back pressure in T-channel automatically increases the set cracking pressure of the valve in a ratio of 1:1.

• Pressure in the circuit increases proportional to increasing electric command signal
• Low hysteresis, accurate pressure control and low pressure drop
• Wide pressure range up to 350 bar
• High flow capacity up to 80 l/min
• Optional electrical terminal of solenoid: EN 175301-803-A, AMP Junior Timer or Deutsch DT04-2P
• Coil supply voltage 12 or 24 V DC
• In the standard version, the valve is zinc-coated for 240 h protection acc. to ISO 9227.
• Enhanced surface protection for mobile sector available for the steel parts (ISO 9227, 520 h salt spray)