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Pressure relief valve
Pressure relief valve

Pressure relief cartridge
◆ pilot operated M22 x 1,5
◆ p = 400 bar ISO 7789
max
◆ p N max = 350 bar
◆ Q = 100 l/min
max

DESCRIPTION APPLICATION
Pilot operated pressure relief valve in screw-in cartridge construc- These valves are used for limiting the operating pressure in the
tion for cavity according to ISO 7789. High flow capacity, very hydraulic system or for protection against pressure peaks. Can be
sensitively adjustable. If the pressure in P (1) exceeds the adjusted used in double pressure relief switches. The screw-in cartridge is
value of the valve, the excessive pressure is drained to T (2). Rapid perfectly suitable for installation in control blocks and is installed in
switching with low hysteresis and excellent stability over the who- sandwich- (vertical stacked systems) and in flange plates (corres-
le flow range. The small clearance of the hardened spool ensures a ponding data sheets in this register). For machining the cartridge
low leakage volume flow. cavity in steel and aluminum blocks, cavity tools are available (hire
or purchase). Please refer to the data sheets in register 2.13.
Attention! As of design index #2, applications with periodically
changing flow direction are admitted.

SYMBOL ACTUATION
Actuation Adjustment spindle M8 x 1
T (2)
Execution S = blockable key adjustment
D = blockable knob adjustment
Optionally:
K = lockable adjustment
P (1)
G = star handle adjustment
→ see Data sheet 2.0-50
Actuation angle a = 1800 ° (5 rotations)
b
Actuation stroke S = 5 mm
b

TYPE CODE
B V PM22 - - # 2
Pressure relief valve

Pilot operated

Type of adjustment Key S
Control knob D
Cover A
Screw-in cartridge M22 x 1,5

Nominal pressure range p N 63 bar 63
160 bar 160
350 bar 350

Sealing material NBR
FKM (Viton) D1
NBR 872 y-Z604

Design index (subject to change)
2.1-530

www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 18 40 2.1-530 E
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