Page 336 - Softbound_Edition_19_en

WVYFA10
Spool valve Spool valve

HYDRAULIC CONNECTION PARTS LIST Spool valve intrinsically safe
Position Article Description Flange construction NG10
93 ISO 4401-05
70.8 10 239.7203 Screw plug ◆ pilot operated
54 4/2-way impulse execution detented Ex ia I Ma
20 246.2151 Socket head screw M5 x 50 DIN 912 ◆
P 246.2171 Socket head screw M5 x 70 DIN 912 ◆ 4/3-way with spring centred mid position Ex ia II C T5 / T6 Ga
X A B Y ◆ 4/2-way with spring reset xII 1 G Ex ia II C T6, T5
68 12 T To 1.5 16.8 46 30 160.2120 O-ring ID 12,42 x 1,78 (NBR) ◆ Q = 160 l/min xI M1 Ex ia I Ma
max
9.7 160.8124 O-ring ID 12,42 x 1,78 (FKM) ◆ p = 350 bar
40 160.2076 O-ring ID 7,65 x 1,78 (NBR) max
160.8076 O-ring ID 7,65 x 1,78 (FKM)
20.8
48 60 160.2052 O-ring ID 5,28 x 1,78 (NBR) DESCRIPTION APPLICATION
Pilot operated 4-way valve in a 5 chamber system. The control of These valves are suitable for applications in explosion-hazard
160.6052 O-ring ID 5,28 x 1,78 (FKM)
70 238.1405 Screw plug VSTI G1/8"-ED the pilot valve takes place electrically. Very compact construction areas, open cast and also in mines. The direction of movement is
with corresponding low weight. The hydraulic control of the pilot determined by the position of the spool and its symbol. Pilot opera-
80 173.1400 Spacer plate NG4 Mini valve can be internal or external via an additional connection plate ted valves are used where large volume flows have to be controlled.

90 173.1500 Control plate NG4 Mini or the mounting interface depending on the type of pilot operation. Switching performance and leakage of the valves must be taken

Spool detented or with spring reset. Intrinsic safety is achieved by into account when designing the system.

limiting the electric energy in the solenoid circuit by means of a
ACCESSORIES STANDARDS separate intrinsically safe power supply. Therewith sparking is
prevented from forming.
Fixing screws Data sheet 1.0-60 Explosion protection Directive 2014 / 34 / EU (ATEX)
Threaded subplates Data sheet 2.9-40 Flameproof enclosure EN / IEC / UL 60079-1, 31
Multi-station subplates Data sheet 2.9-70 Cable entry EN 60079-0, 1, 7, 15, 31 SYMBOL

Horizontal mounting blocks Data sheet 2.9-110 Mounting interface ISO 4401-05
Protection class EN 60 529 AB3 AB1 AB2
Technical explanations Data sheet 1.0-100 A B A B A B
Filtration Data sheet 1.0-50 Contamination ISO 4406 a b a b a b
efficiency a b a b a b
P T P T P T

ACB AC1 CB2
A B A B A B
a o b a b a b
a b a b a b
P T P T P T

ADB AD1 DB2
A B A B A B
o b a
a b a b
a b a b a b
P T P T P T

AEB* AE1 * EB2*
A B A B A B
a o b a b a b
a b a b a b
P T P T P T

AFB * AF1 * FB2 *
A B A B A B
o b a
a b a b
a b a b a b
P T P T P T

AGB AG1 GB2
A B A B A B
o b a
a b a b
a b a b a b
P T P T P T

* When the connections P and T are connected in the middle position, a back pressure cartridge is built in as standard in the case of internal
pilot oil supply (ti/pi). If this back pressure valve is not used (0, according to the type code), it must be ensured that a pilot pressure of minnimum
4 bar is present. The pressure difference of this cartridge has to be added to the pressure difference of the main valve (see characteristics)
which results in an overall value. Pilot control type xi is not available with a back pressure cartridge.
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 6/6 Edition: 21 18 1.9-38 E www.wandfluh.com Illustrations are not binding Data subject to change 1/6 Edition: 20 09 1.9-40 E
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