Fluid Power Symbol
: 160 lpm
: 350 bar
: 0.3 ml/min (5 dpm)
The DDR valves are used to provide pressure relief and to protect Directional Valves and actuators from shock or surge pressures induced by changes in direction or sudden stops which create excessive load conditions. With closed centre Directional Control Valves it also prevents cavitation.
The cross line direct acting relief valves exhaust the oil from one line to another when the pressure exceeds the spring force in either of the valves. Line M1-V1 is relieved into line M2-V2 and vice versa using the two valves. The valve should mount as close to the actuator as possible.
Hardened and ground working parts give long, trouble-free life. Consistent stable operation is achieved providing low pressure over ride with increasing flow.