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Spool valve
Spool valve WVYFA10

HYDRAULIC CONNECTION PARTS LIST Spool valve
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
20 246.2141 Socket head screw M5 x 40 DIN 912 ◆ x II 2 G Ex db IIC T6, T4
P 246.2160 Socket head screw M5 x 60 DIN 912 ◆ 4/3-way with spring centred mid position x II 2 D Ex tb III C T80 °C, T130 °C
X A B Y ◆ 4/2-way with spring reset x I M2 Ex db I Mb
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 Class I Division 1
max
9.7 160.8124 O-ring ID 12,42 x 1,78 (FKM) ◆ p = 350 bar Class I Zone 1
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 DESCRIPTION APPLICATION
48 60 160.2052 O-ring ID 5,28 x 1,78 (NBR)
Pilot operated 4-way valve in a 5 chamber system. The control of
Spool valves are mainly used for controlling direction of movement
160.6052 O-ring ID 5,28 x 1,78 (FKM) the pilot valve takes place electrically. Very compact construction and stopping of hydraulic cylinders and motors. The direction of
70 238.1405 Screw plug VSTI G1/8"-ED with corresponding low weight. The hydraulic control of the pilot movement is determined by the position of the spool and its symbol.
90 173.1500 Control plate NG4 Mini valve can be internal or external via an additional connection plate Pilot operated valves are used where large volume flows have to be
or the mounting interface depending on the type of pilot operation. controlled. Switching performance and leakage of the valves must
Spool detented or with spring reset. be taken into account when designing the system. Solenoid spool
The pressure tight encapsulated Ex-protection solenoid coil valves are suitable for machine tools and handling systems of any
ACCESSORIES STANDARDS prevents an explosion on the inside penetrating to the outside as kind.

well as an ignitable surface temperature.
Fixing screws Data sheet 1.0-60 Mounting interface ISO 4401-05
Threaded subplates Data sheet 2.9-40 Solenoids DIN VDE 0580
Multi-station subplates Data sheet 2.9-70 Connection execution D EN 175301 – 803 SYMBOL
Horizontal mounting blocks Data sheet 2.9-110 Protection class EN 60 529 AB3 AB1 AB2
Technical explanations Data sheet 1.0-100 Contamination efficiency ISO 4406 A B A B A B
Filtration Data sheet 1.0-50 a b a b a b
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)
Wandfluh AG Postfach CH-3714 Frutigen which results in an overall value. Pilot control type xi is not available with a back pressure cartridge.
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: 20 16 1.9-32 E www.wandfluh.com Illustrations are not binding Data subject to change 1/6 Edition: 21 18 1.9-38 E
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