DESCRIPTION
Direct operated proportional pressure relief valve with inverse function in screw-in cartridge construction for cavity according to ISO 7789. Good flow capacity due to the differencial area principle, very sensitively adjustable. When the operating pressure adjusted by means of the proportional solenoid is reached, the valve opens and connects the protected line with the drain to the tank. With the solenoid deenergised, maximum working pressure is present. If the solenoid current increases, the pressure in port P (1) drops. The back pressure in T (2) affects the pressure in P (1). For the control, Wandfluh proportional amplifiers are available (see register 1.13).