Proportional pressure relief valves, proportional pressure reducing valves 7/8"-14UNF
Direct operated proportional pressure reducing valve with pilot spool actuation in screw-in cartridge construction for cavity according Wandfluh standard. The proportional pressure reducing valve controls the pressure in port A (1). Proportionally to the solenoid current, the solenoid force and the pressure in port A (1) rise. The valve functions practically independently of the pressure in port P (2). Pressure increase in the consumer port A (1) to above the adjusted value, e.g. through an active consumer, is avoided by discharging excess oil to the tank T (3). With the solenoid deenergised, the oil flows freely from consumer port A (1) to port T (3). For the control, Wandfluh proportional amplifiers are available (see register 1.13).
Proportional pressure reducing cartridge
- Direct operated by means of pilot spool
- Qmax = 20 l/min
- pmax = 350 bar
- pN red max = 200 bar
Application
These valves are used in hydraulic systems where the pressure has to be changed frequently. The electrical remote control in conjunction with process controls allows economical solutions with repeatable processes. Direct operated pressure reducing valves are used where a low minimal adjustable pressure is required. For machining the cartridge cavity in steel and aluminium blocks, cavity tools are available (hire or purchase). Please refer to the data sheets in register 2.13.
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