Page 1028 - Softbound_Edition_19_en

Proportional pressure reducing valve

Proportional pressure reducing cartridge
◆ direct operated by means of pilot spool M22 x 1,5
◆ Q = 20 l/min ISO 7789
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 to ISO 7789. Proportionally to the solenoid current, the tion with process controls allows economical solutions with repea-
solenoid force and the pressure in port A (1) rise. The valve func- table processes. The screw-in cartridge is perfectly suitable for
tions practically independently of the pressure in port P (2). Pres- installation in control blocks and is installed in sandwich- (vertical
sure increase in the consumer port A (1) to above the adjusted stacked systems) and in flange plates (corresponding data sheets
value, e.g. through an active consumer, is avoided by discharging in this register). Direct operated pressure reducing valves are used
excess oil to the tank T (3). With the solenoid deenergised, the oil where a low minimal adjustable pressure is required. For machining
flows freely from consumer port A (1) to port T (3). For the control, the cartridge cavity in steel and aluminum blocks, cavity tools are
Wandfluh proportional amplifiers are available (see register 1.13). available (hire or purchase). Please refer to the data sheets in

register 2.13.

SYMBOL ACTUATION
Actuation Proportional solenoid, wet pin push
(A) 1 type, pressure tight
(A) 1
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
(P) 2
(T) 3
Connector Deutsch DT04 – 2P

STANDARDS INSTALLATION NOTES
Cartridge cavity ISO 7789 Mounting type Screw-in cartridge M22 x 1,5
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: 18 35 2.3-625 E