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Proportional flow control valve
Proportional flow control valve

Proportional 2-way flow control cartridge
◆ direct operated, pressure compensated M33 x 2
◆ Q = 70 l/min ISO 7789
max
◆ Q N max = 55 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, pressure compensated proportional flow control Proportional flow control valves are suitable for precise speed
valve as screw-in cartridge for cavity according to ISO 7789. When control, where the load current has to be maintained constant inde -
the solenoid is deenergised, the control spool closes practically pendent of the input and output pressure. These valves are suitable
leakage-free. The change of the electric current is followed by a for applications in explosion-hazard areas, open cast and also in
proportional volume flow change. From the input (1), the fluid flows mines. The screw-in cartridge is perfectly suitable for installation
over the control and throttling spool to the controlled output (2). in control blocks. For machining the cartridge cavity in steel and
The pressure tight encapsulated Ex-protection solenoid coil aluminum blocks, cavity tools are available (hire or purchase).
prevents an explosion on the inside penetrating to the outside as Please refer to the data sheets in register 2.13.

well as an ignitable surface temperature.

CERTIFICATES SYMBOL
Surface Mining Standard M248 Simplified Detailed QN…
-25 °C Electronic 2 2
to…
ATEX x x x x
IECEx x x x x 1
CCC x x x x
EAC x x x x
Australia x x x
MA x x x
UL / CSA x x
The certificates can be found on www.wandfluh.com 1

www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 21 2.6-655 E
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