SR1A-A2 Pressure Relief Valve, Poppet Type, Direct Acting

A poppet type, direct acting hydraulic relief valve in the form of a screw-in cartridge intended for use as a pressure limiting device for common hydraulic circuit protection. The spring acts on the poppet and presses it onto the valve seat. If the hydraulic pressure is below the pre-set value, the valve is closed. If the hydraulic force exceeds the pre-set value the valve opens and flow passes to the tank port until the system pressure falls below the spring pre-set value and the valve closes again.

• Excellent stability throughout flow range with rapid response to dynamic pressure changes
• Low hysteresis, accurate pressure control and low pressure drop through CFD optimized flow paths
• Wide pressure range up to 350 bar
• Hardened precision parts
• Sharp-edged steel seats for dirt-tolerant performance
• Leak-free closing, suitable for fast cycling with long life
• Adjustable by allen key or hand screw
• 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)