Page 850 - Softbound_Edition_19_en

Pressure relief valve

Pressure relief cartridge
7 ⁄8 “-14 UNF
Leakage-free Wandfluh standard
◆ direct operated
◆ p = 450 bar
max
◆ p N max = 420 bar
◆ Q = 50 l/min
max

DESCRIPTION APPLICATION
Direct operated poppet type pressure relief valve in screw-in These valves are used for limiting the operating pressure in the
cartridge construction for cavity according to Wandfluh standard. hydraulic system. Can be used in double pressure relief switches.
The valve is closed in the neutral position. If the pressure in P (1) For machining the cartridge cavity in steel and aluminum blocks,
exceeds the adjusted value of the valve, the excessive pressure is cavity tools are available (hire or purchase). Please refer to the

drained to T (2). The back pressure at T (2) is added to the adjusted data sheets in register 2.13.

value. T (2) can be charged up to the maximum. Hardened precision
parts ensure virtually leakage-free closing. Rapid switching with
low hysteresis and excellent stability over the whole flow range.

SYMBOL ACTUATION
Actuation Adjustment spindle M12 x 1
(T) 2 Execution S = blockable key adjustment
Actuation angle a = 1800 ° (5 rotations)
b
Actuation stroke S = 5 mm
b
(P) 1

TYPE CODE
B E S PU10 - - #
Pressure relief valve

Direct operated, leackage-free
Type of adjustment Key

Screw-in cartridge 7/8“ - 14 UNF - 2A
Nominal pressure range p 63 bar 63
N
420 bar 420
Sealing material NBR
FKM (Viton) D1
NBR 872 Z604

Design index (subject to change)
2.1-590

www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 18 44 2.1-590 E