Page 1170 - Softbound_Edition_19_en

Pressure compensator valve

Pressure compensator cartridge
◆ 2- and 3-way function M33 x 2
◆ Q = 100 l/min ISO 7789
max
◆ p = 350 bar
max

DESCRIPTION APPLICATION
Pressure compensator valve with fixed setting in screw-in cartrid- 2-way pressure compensation valve: Volume flow changes due to
ge construction for cavity according to ISO 7789. The task of the pressure or load changes at the consumer are corrected. Cylinder
pressure compensator is to keep the pressure drop via a throttle or motor speeds remain constant. If several consumers are opera-
point (e.g. control edge of a spool valve) almost constant. It ensures ting in parallel, the full system pressure is available to each one.
that a determined amount of oil, independent of the load pressure, 3-way pressure compensator valve: Excess pump flow rate is fed to
flows through the spool valve when the control spool is in a specific the return system. Especially in the mobile area, where the neces-
position. Pressure compensating valves are mostly used in conjun- sary cooling surfaces are missing, this prevents the hydraulic
ction with proportional valves. system from overheating. Parallel operation is not possible. If there

are several consumers, the pump pressure is adapted to the highest
working pressure. For machining the cartridge cavity in steel and
aluminum blocks, cavity tools are available (hire or purchase).
Please refer to the data sheets in register 2.13.

SYMBOL ACTUATION
2-way function 3-way function Fixed adjustment construction. Other differential pressures on
(A) 1 (T) 2 request.
(x) 3 (x) 3

(P) 2 (P) 1

TYPE CODE
U F PM33 - #
2-way-pressure compensator valve Z
3-way-pressure compensator valve D
Type of adjustment Fixed adjustment

Screw-in cartridge M33 x 2
Sealing material NBR
FKM (Viton) D1

Design index (subject to change)
2.5-650

www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 22 07 2.5-650 E