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Proportional throttle valve
Proportional throttle valve

Proportional throttle cartridge
◆ direct operated M22 x 1,5
◆ Q = 45 l/min ISO 7789
max
◆ Q N max = 25 l/min x II 2 G Ex db IIC T6, T4
◆ p = 350 bar
max
x II 2 D Ex tb III C T80 °C, T130 °C
x I M2 Ex db I Mb
Class I Division 1
Class I Zone 1

DESCRIPTION APPLICATION
Direct operated proportional throttle valve in screw-in cartridge Proportional throttle valves are suitable for smooth control of
construction for cavity according to ISO 7789. With the solenoid movements in stationary or mobile systems. These valves are
deenergised, the control spool is held in the closed position (DN) or suitable for applications in explosion-hazard areas, open cast
open position (DO) by a spring. The change of the electric current is and also in mines. The screw-in cartridge is perfectly suitable for
followed by a proportional volume flow change. Very sensitive installation in control blocks. For machining the cartridge cavity
opening and closing characteristics and low hysteresis are charac- in steel and aluminum blocks, cavity tools are available (hire or
teristics of these valves. For the control, Wandfluh proportional purchase). Please refer to the data sheets in register 2.13.
amplifiers are available (see register 1.13). The pressure tight
encapsulated Ex-protection solenoid coil prevents an explosion on
the inside penetrating to the outside as well as an ignitable surface
temperature.

TYPE CODE

D B PM22 - - / / - #
Throttle valve
Normally closed N
Normally open O
Proportional, ex-protection execution Ex d

Screw-in cartridge M22 x 1,5
Nominal volume flow rate Q N 6,3 l/min 6,3
10 l/min 10
25 l/min 25
Nominal voltage U N 12 VDC G12
24 VDC G24

Ambient temperature up to:
Nominal power P 9 W L9 40 °C or 90 °C
N
15 W L15 70 °C
17 W L17 70 °C (only UL / CSA)
Certification ATEX, IECEx, EAC, CCC UL / CSA UL
Australia AU MA MA
Sealing material NBR
FKM (Viton) D1

Design index (subject to change)
2.6-535

www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 21 2.6-535 E
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