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Proportional pressure reducing valve
Proportional pressure reducing valve Proportional pressure reducing valve

DIMENSIONS HYDRAULIC CONNECTION Proportional pressure reducing cartridge
Cavity drawing according to ISO 7789–22–04–0–98 ◆ direct operated by means of pilot spool M22 x 1,5
◆ Q = 20 l/min ISO 7789
max
M22x1.5 ◆ p = 350 bar
s30 max x II 2 G Ex db IIC T6, T4
◆ p N red max = 200 bar
15 M22x1.5 x II 2 D Ex tb III C T80 °C, T130 °C
76.8 MD=5.5Nm (3) (2) (3) x I M2 Ex db I Mb
37.2 Class I Division 1
(1) Class I Zone 1
W = (2)
12 17 10 18 50 70 60 80 90 (1)
DESCRIPTION
MD=5Nm APPLICATION
78.4 58.4
(1)
143 Direct operated proportional pressure reducing valve with pilot These valves are suitable for applications in explosion-hazard
spool actuation in screw-in cartridge construction for cavity areas, open cast and also in mines. The electrical remote control in
HB0 Note! For detailed cavity drawing and cavity tools see data according to ISO 7789. Proportionally to the solenoid current, the conjunction with process controls allows economical solutions
sheet 2.13-1004 solenoid force and the pressure in port A (1) rise. The valve func- with repeatable processes. The screw-in cartridge is perfectly sui-
15 tions practically independently of the pressure in port P (2). Pres- table for installation in control blocks and is installed in sandwich-
MD= 9.5Nm
sure increase in the consumer port A (1) to above the adjusted (vertical stacked systems) and in flange plates (corresponding data
74.8 value, e.g. through an active consumer, is avoided by discharging sheets in this register). For machining the cartridge cavity in steel
M = □35 excess oil to the tank T (3). With the solenoid deenergised, the oil and aluminum blocks, cavity tools are available (hire or purchase).

flows freely from consumer port A (1) to port T (3). For the control,
Please refer to the data sheets in register 2.13.
Wandfluh proportional amplifiers are available (see register 1.13).
The pressure tight encapsulated Ex-protection solenoid coil pre-
10
vents an explosion on the inside penetrating to the outside as well
PARTS LIST as an ignitable surface temperature.
Position Article Description
10 206.2… W.S37 / 19 x 50
260.5… M.S35 / 19 x 50 TYPE CODE
12 154.2700 Knurled nut M P B PM22 - - / / - #
15 253.8000 HB4,5 manual override Pressure reducing valve
239.2033 HB0 Screw plug
Direct operated by means of pilot spool
17 160.2187 O-ring ID 18,72 x 2,62 (NBR)
18 160.2170 O-ring ID 17,17 x 1,78 (NBR) Proportional, explosion proof execution Ex d
50 160.2188 O-ring ID 18,77 x 1,78 (NBR) Screw-in cartridge M22 x 1,5
160.6188 O-ring ID 18,77 x 1,78 (FKM)
60 160.2156 O-ring ID 15,60 x 1,78 (NBR) Execution L9 L15 / L17
160.6156 O-ring ID 15,60 x 1,78 (FKM) Nominal pressure range p [bar] 20 115 20 135
N

80
200
235
95
70 049.8196 Backup ring PTSM rd 14,5 x 17,4 x 1,4
Nominal voltage U 12 VDC G12
80 160.2140 O-ring ID 14,00 x 1,78 (NBR) N 24 VDC G24
160.6141 O-ring ID 14,00 x 1,78 (FKM)
90 049.8176 Back-up ring PTSM rd 12,7 x 15,6 x 1,4 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 (nur L15) MA
Sealing material NBR
FKM (Viton) D1
Options without
amplifier M248

Design index (subject to change)
2.3-627
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: 18 35 2.3-625 E www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 21 2.3-627 E
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