A screw-in, cartridge style, direct acting, poppet type, normally closed hydraulic relief valve. It’s typically used to protect hydraulic components from pressure transients. When the pressure at the Inlet (1) reaches the valve setting, the valve starts to open to tank (2) and thanks to the effect of the deflector integrated into the poppet it provides a limited pressure rise. The cartridge offers excellent response to load changes in hydraulic circuits requiring low internal leakage as well as limited hysteresis. Warning: Adjustment screw doesn’t have a positive stop wich prevents it from being backed out of the valve.