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Flow control valve
Flow control valves

3-way flow control valve
With fixed pressure compensator and
adjustable orifice, m33x2
Screw-in cartridge construction ISO 7789
• Q max = 120 l/min
• Q N max = 100 l/min
• p max = 350 bar

DESCRIPTION FUNCTION APPLICATION
3-way flow control valve as screw-in cartridge The 3-way flow control valve is designed to For use in all hydraulic systems where the sup-
with thread M33x2 for cavity in accordance with keep the oil flow to any actuator constant irre- ply volume flow needs to be kept constant even
ISO 7789. The valve can be supplied in 2 dif- spective of the load. Surplus volume flow will when the load fluctuates. Installation of the
ferent setting versions: Key setting «S» and be diverted to the tank line thus saving energy screw-in cartridge in control blocks as well as
turning knob setting «D». Key adjustment «S» and preventing an overheating of the hydrau- in the Wandfluh sandwich plates (vertical stak-
is also available with cover, see data sheet lic system. By turning the knob of the variable ked systems) and flange valves. (Please note
2.0.50. Available as standard are 2 nominal restrictor the volume flow can be adjusted. In the separate data sheets in register 2.5). Ca-
flow steps. case of pressure fluctuations, the through flow vity tools are available for machining cavities
The two-part cartridge body is made of steel. cross-section in the pressure balance spool (hire or purchase). Please refer to the data
External parts are zinc coated and as a result changes in such a manner, that the pressure sheets in register 2.13.
rust protected. The colourlessly anodised alu- difference in the measuring orifice is kept con-
minium rotary knob gives this quality product stant.
a clean design.

TyPE CODE
QD PM33 - #
Flow control valve, 3-way
Type of adjustment Screw S
Turning knob D
Cover A (see data sheet 2.0-50)
Screw-in cartridge M33x2
50 l/min 50
Nominal flow rates Q N
100 l/min 100
Ø26 Design-Inedx (Subject to change)
s3
Ø 17
20 10
s 10
30
15
52,3 GENERAL SPECIFICATIONS 59,8 HyDRAULIC SPECIFICATIONS
Denomination s36 3-way flow control valve Fluid Mineral oil, other fluid on request
Construction Ø 40 Screw-in cartridge for cavity acc. to ISO 7789 ISO 4406:1999, class 18/16/13
Mounting 60 Screw-in thread M33x2 Contamination efficiency Required filtration grade (ß 6...10 ≥ 75)
M
33x2
133,05 Ambient temperature -20…50 °C 140,55 Viscosity range refer to data sheet 1.0-50/2
Mounting position
any
12 mm /s…320 mm /s
2
2
Fastening torque M D = 80 Nm Fluid temperature -20…+70 °C
Weight m = 0,48 kg (screw) Peak pressure p max = 350 bar
80,75 50 m = 0,49 kg (knob) Nominal volume flow rates: Q = 50 l/min, 100 l/min
N
80
Volume flow direction 1 → 3 adjustable flow Min. volume flow Q = 0,2 l/min (at ν = 30 mm /s)
2
min
Max. volume flow Q max = 120 l/min
70 Max. feed flow 140 l/min
40 Control accuracy ≤ 1%
SymbOLS mECHANICAL ACTUATION
simplified detailed Mechanical types of operation in 2 different versions:
S = Screw adjustment
with fork wrench and Allen key
1 3 1 3 D = Control knob adjustment, fixed
Control stroke S = 4 mm
b
2 Control angle α b = 1440° (4 turns)
2
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 1/2
CH-3714 Frutigen Edition 10 33
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