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Proportional flow control valve Proportional flow control valve
Proportional flow control valve

DIMENSIONS HYDRAULIC CONNECTION Proportional 2-way flow control cartridge
Cavity drawing according to ISO 7789–33–01–0–98 ◆ direct operated, pressure compensated M33 x 2
◆ Q = 70 l/min ISO 7789
max
M33 x 2 ◆ Q N max = 55 l/min x II 2 G Ex db IIC T6, T4
s36 ◆ p max = 350 bar
15 x II 2 D Ex tb III C T80 °C, T130 °C
MD=5.5Nm M33x2 x I M2 Ex db I Mb
85.1 (2) (2) Class I Division 1
45.3 (1) Class I Zone 1

W =
(1)
20 17 10 18 50 70 60 (1)
MD=5Nm
91.3 50.7 DESCRIPTION APPLICATION
144.9 Note! For detailed cavity drawing and cavity tools see data Direct operated, pressure compensated proportional flow control Proportional flow control valves are suitable for precise speed
sheet 2.13-1005
valve as screw-in cartridge for cavity according to ISO 7789. When control, where the load current has to be maintained constant inde -
HB0 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
15
MD= 9.5Nm proportional volume flow change. From the input (1), the fluid flows mines. The screw-in cartridge is perfectly suitable for installation
in control blocks. For machining the cartridge cavity in steel and
over the control and throttling spool to the controlled output (2).
84.8 The pressure tight encapsulated Ex-protection solenoid coil aluminum blocks, cavity tools are available (hire or purchase).
45 prevents an explosion on the inside penetrating to the outside as Please refer to the data sheets in register 2.13.

M = well as an ignitable surface temperature.

10

PARTS LIST
Position Article Description
10 206.12.. W.S45 / 23 x 50
206.7... M.S45 / 23 x 50
15 253.8000 HB4,5 manual override CERTIFICATES SYMBOL
239.2033 HB0 Screw plug Surface Mining Standard M248 Simplified Detailed QN…
17 160.2222 O-ring ID 22,22 x 2,62 (NBR) -25 °C Electronic 2 2
18 160.2220 O-ring ID 21,95 x 1,78 (NBR) to…
20 154.2701 Knurled nut M23 x 1,5 x 19,7 ATEX x x x x
50 160.2298 O-ring ID 29,82 x 2,62 (NBR) IECEx x x x x 1
160.6296 O-ring ID 29,82 x 2,62 (FMK) CCC x x x x
60 160.2238 O-ring ID 23,81 x 2,62 (NBR) EAC x x x x
160.6238 O-ring ID 23,81 x 2,62 (FMK) Australia x x x
70 049.8297 Backup ring PTSM rd 22,1 x 26,6 x 1,4 MA x x x
UL / CSA x x
The certificates can be found on www.wandfluh.com 1

Wandfluh AG Postfach CH-3714 Frutigen
Tel. +41 33 672 72 72 Fax +41 33 672 72 12 sales@wandfluh.com

www.wandfluh.com Illustrations are not binding Data subject to change 4/4 Edition: 20 41 2.6-651 E www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 21 2.6-655 E
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