Page 971 - Softbound_Edition_19_en

Proportional pressure relief valve
Proportional pressure relief valve

Proportional pressure relief cartridge inverse
◆ direct operated M22 x 1,5
◆ Q = 25 l/min ISO 7789
max
◆ p = 400 bar
max
◆ p = 350 bar
N max

DESCRIPTION APPLICATION
Direct operated proportional pressure relief valve with inverse The electrical remote control in conjunction with process controls
function in screw-in cartridge construction for cavity according to allows economical solutions with repeatable processes. By means
ISO 7789. Good flow capacity due to the differencial area principle, of the inverse function, the maximum system pressure is main-
very sensitively adjustable. When the operating pressure adjusted tained if the electrical valve control falls out (safety function). The
by means of the proportional solenoid is reached, the valve opens screw-in cartridge is perfectly suitable for installation in control
and connects the protected line with the drain to the tank. With the blocks and is installed in sandwich- (vertical stacked systems) and
solenoid deenergised, maximum working pressure is present. If the in flange plates (corresponding data sheets in this register). For
solenoid current increases, the pressure in port P (1) drops. The machining the cartridge cavity in steel and aluminum blocks, cavity
back pressure in T (2) affects the pressure in P (1). For the control, tools are available (hire or purchase). Please refer to the data
Wandfluh proportional amplifiers are available (see register 1.13). sheets in register 2.13.

SYMBOL ACTUATION
Actuation Proportional solenoid, wet pin push
(T) 2 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) 1 Connector socket AMP Junior-Timer
Connector Deutsch DT04 – 2P

TYPE CODE
B D I PM22 - - / - #
Pressure relief valve

Direct operated

Proportional, inverse
Screw-in cartridge M22 x 1,5
Nominal pressure range p N 20 bar 20 200 bar 200
100 bar 100 315 bar 315
160 bar 160 350 bar 350

Nominal voltage U 12 VDC G12
N
24 VDC G24
without coil X5
Slip-on coil Metal housing round W
Metal housing square M
Connection execution Connector socket EN 175301-803 / ISO 4400 D
Connector socket AMP Junior - Timer J
Connector Deutsch DT04 - 2P G
Sealing material NBR
FKM (Viton) D1

Design index (subject to change)
2.3-548

www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 19 29 2.3-548 E
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