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Proportional throttle valve Proportional throttle valve
Proportional throttle valve

DIMENSIONS HYDRAULIC CONNECTION Proportional throttle cartridge
Cavity drawing according to ISO 7789–22–01–0–98 ◆ direct operated M22 x 1,5
◆ Q = 45 l/min ISO 7789
max
s30 M22x1.5 ◆ Q N max = 25 l/min x II 2 G Ex db IIC T6, T4
= 350 bar
p
15 M22x1.5 ◆ max x II 2 D Ex tb III C T80 °C, T130 °C
76.8 MD=5.5Nm x I M2 Ex db I Mb
Class I Division 1
37.1 (2) (2) Class I Zone 1
(1)
W = (1)

12 17 10 18 50 70 60
MD=5Nm (1)
91.4 37.5 DESCRIPTION APPLICATION
135 Note! For detailed cavity drawing and cavity tools see data Direct operated proportional throttle valve in screw-in cartridge Proportional throttle valves are suitable for smooth control of
sheet 2.13-1008 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
HB0
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
15
MD= 9.5Nm 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
74.8 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
35 encapsulated Ex-protection solenoid coil prevents an explosion on
M = the inside penetrating to the outside as well as an ignitable surface
temperature.
10

PARTS LIST
Position Article Description TYPE CODE
10 206.2… W.S37 / 19 x 50
260.5… M.S35 / 19 x 50 Throttle valve D B PM22 - - / / - #
12 154.2700 Knurled nut
15 253.8000 HB4,5 manual override Normally closed N
O
Normally open
239.2033 HB0 Screw plug
17 160.2187 O-ring ID 18,72 x 2,62 (NBR) Proportional, ex-protection execution Ex d
18 160.2170 O-ring ID 17,17 x 1,78 (NBR) Screw-in cartridge M22 x 1,5
50 160.2188 O-ring ID 18,77 x 1,78 (NBR)
160.6188 O-ring ID 18,77 x 1,78 (FKM) Nominal volume flow rate Q N 6,3 l/min 6,3
10 l/min 10
60 160.2156 O-ring ID 15,60 x 1,78 (NBR) 25 l/min 25
160.6156 O-ring ID 15,60 x 1,78 (FKM)
70 049.3196 Backup ring rd 16,1 x 19 x 1,4 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

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: 22 50 2.6-531 E www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 21 2.6-535 E
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