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Flow control valve
Flow control valves Pressure compensator valve

CHARACTERISTICS Oil viscosity ν = 30 mm /s Pressure compensator cartridge
2
Q = f (n) Volume flow adjustment characteristics (at p = 350 bar) Q = f (p) Volume flow pressure characteristic ◆ 2- and 3-way function M22 x 1,5
◆ Q = 25 l/min ISO 7789
max
Q [l/min] Q [l/min] ◆ p = 350 bar
120 K0944_1 120 K0944_2 max
Q = 100 l/min
100 N 100 Q = 100 l/min
N
80 80
60 Q N = 50 l/min 60 Q N = 50 l/min
40 40 DESCRIPTION APPLICATION

20 20 Pressure compensator valve with fixed setting in screw-in cartrid- 2-way pressure compensation valve: Volume flow changes due to
0 0
0 1 2 3 4 n [-] 0 50 100 150 200 250 300 350 p [bar] 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-
Δp = f (Q) Pressure drop volume flow characteristic 1→ 2 Δp = f (Q) Pressure drop volume flow characteristic 1→ 3 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
p [bar] p [bar] flows through the spool valve when the control spool is in a specific the return system. Especially in the mobile area, where the neces-
N
40 K0944_3 15 K0944_4 Q = 50 l/min
position. Pressure compensating valves are mostly used in conjun- sary cooling surfaces are missing, this prevents the hydraulic

30 12 Q N = 100 l/min ction with proportional valves. system from overheating. Parallel operation is not possible. If there
9 are several consumers, the pump pressure is adapted to the highest
20
6 working pressure. For machining the cartridge cavity in steel and
10 3 aluminum blocks, cavity tools are available (hire or purchase).
Please refer to the data sheets in register 2.13.
0 0
0 20 40 60 80 100 120 130 140 Q [l/min] 0 20 40 60 80 100 120 Q [l/min]
DImENSIONS / SECTIONAL DRAWING
Screw adjustment «S» Knob adjustment «D» Cavity drawing acc. to
ISO 7789–33–04–0–98
Ø26 SYMBOL ACTUATION
s3
Ø 17 M33x2 2-way function 3-way function Fixed adjustment construction. Other differential pressures on re-
20 10 (A) 1 (T) 2 quest.
s 10 (x) 3 (x) 3
30
52,3 15 59,8
s36 (3) (P) 2 (P) 1
Ø 40
60
133,05 M 33x2 140,55 (2)

80,75 50 (1)
80 TYPE CODE
U F PM22 - #
70 (1) 2-way-pressure compensator valve Z
40 For cavity details and 3-way-pressure compensator valve D
cavity tools, see data sheet
2.13-1040 Type of adjustment Fixed adjustment
PARTS LIST ACCESSORIES Screw-in cartridge M22 x 1,5
Flange-/sandwich plate NG10 Data sheet 2.5-762
Position Artikcle Description Sealing material NBR
10 1 114.2299 Knob 1 3 Line mount body Data sheet 2.9-210 FKM (Viton) D1
3
15 234.1060 Plate Design index (subject to change)
2
20 193.1040 Safety plate RD4 DIN 6799
2.5-630
30 153.1302 Hexagonal nut 0,5D M6x3,2
2
40 160.2236 O-ring ID 23,52x1,78
50 160.2238 O-ring ID 23,81x2,62
60 160.2298 O-ring ID 29,82x2,62
70 049.3276 Back-up ring RD 24,1x27x1,4
80 049.3297 Back-up ring RD 24,5x29x1,4
Technical explanation see data sheet 1.0-100

Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.5-555E 2/2 www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 22 12 2.5-630 E
CH-3714 Frutigen Edition 10 33
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