HAWE Harvey PSL and PSV ratio of multiple directional control valves series 
 HAWE Harvey proportion of PSL and PSV series multiple directional control valves and pump system, respectively, for the quantitative variable pump system hydraulic actuators stepless speed adjustment, independent of system load control mechanism. Multiple actuators can work simultaneously and independently. This form of valve is mainly used in hydraulic systems operating machinery (for example: lifting, drilling, engineering machinery, etc.). By selecting the implementation of components A, B port different maximum flow, and the option of using a variety of additional functions of the valve (for example: unloading), can ensure the best match of each control loop. 
 Maximum pressure Pmax = 400 至 420 bar maximum flow Qmax = 3 至 210 l / min. 


 Harvey NSMD2 series clamping module HAWE 
 HAWE Harvey NSMD2 series module is mainly used for clamping the clamping device, such as automatic lathe hydraulic fixture. NSMD2 type clamping modules to meet DIN24340-A6 standard installation. Such clamping module can not only control the clamping and release the cylinder, and on request also will adjust the clamping pressure and electrical pressure monitoring integrated in one. In addition, the implementation of components can also adjust the side A, or A and B interfaces clamping pressure, and set the pressure of the downstream pressure switch, the adjustment method to manual, mechanical or proportion of regulatory elements. 4 / 3, or 4 / 2 directional control valve positioning with the slot can not only ensure the safety of reversing valve, but also to meet a variety of applications. In addition, the spool in a terminal position, but also additional throttle to control the speed of actuator movement. 
 Maximum pressure Pmax = 120 bar maximum flow Qmax = 25 l / min.