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Proportional pressure reducing valve
Proportional pressure reducing valve

Proportional pressure reducing cartridge
◆ direct operated by means of pilot spool 7 ⁄8 “-14 UNF
◆ Q = 20 l/min Wandfluh standard
max
◆ p = 350 bar
max
◆ p = 200 bar
N red max

DESCRIPTION APPLICATION
Direct operated proportional pressure reducing valve with pilot These valves are used in hydraulic systems where the pressure has
spool actuation in screw-in cartridge construction for cavity to be changed frequently. The electrical remote control in conjunc-
according Wandfluh standard. The proportional pressure reducing tion with process controls allows economical solutions with repea-
valve controls the pressure in port A (1). Proportionally to the sole- table processes. Direct operated pressure reducing valves are
noid current, the solenoid force and the pressure in port A (1) rise. used where a low minimal adjustable pressure is required. For
The valve functions practically independently of the pressure in machining the cartridge cavity in steel and aluminum blocks, cavity
port P (2). Pressure increase in the consumer port A (1) to above the tools are available (hire or purchase). Please refer to the data
adjusted value, e.g. through an active consumer, is avoided by sheets in register 2.13.
discharging excess oil to the tank T (3). With the solenoid deenergi-
sed, 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).

SYMBOL ACTUATION
Actuation Proportional solenoid, wet pin push
(A) 1 type, pressure tight
Execution W.S37 / 19 x 50 (Data sheet 1.1-173)
M.S35 / 19 x 50 (Data sheet 1.1-174)
Connection Connector socket EN 175301 – 803
(P) 2 (T) 3 Connector socket AMP Junior-Timer
Connector Deutsch DT04 – 2P

STANDARDS INSTALLATION NOTES
Cartridge cavity Wandfluh standard Mounting type Screw-in cartridge ⁄8 “-14 UNF
7
Solenoids DIN VDE 0580 Mounting position Any, preferably horizontal
Connection execution D EN 175301 – 803 Tightening torque M = 60 Nm Screw-in cartridge
D
Protection class EN 60 529 M = 5 Nm knurled nut
D
Contamination efficiency ISO 4406 M = 9,5 Nm HB0
D
M = 5,5 Nm HB4,5
D

www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 17 49 2.3-673 E
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