Page 324 - Softbound_Edition_19_en

Spool valve

Spool valve
NG10
Flange construction ISO 4401-05
◆ pilot operated
◆ 4/2-way impulse execution detented
◆ 4/3-way with spring centred mid position
◆ 4/2-way with spring reset
◆ Q = 160 l/min
max
◆ p = 350 bar
max

DESCRIPTION APPLICATION
Pilot operated 4-way valve in a 5 chamber system. The control of Spool valves are mainly used for controlling direction of movement
the pilot valve takes place electrically. Very compact construction and stopping of hydraulic cylinders and motors. Pilot operated valves
with corresponding low weight and high flow values. The hydraulic are used where large volume flows have to be controlled. Switching
control of the pilot valve can be internal or external via an additio- performance and leakage of the valves must be taken into account
nal connection plate or the mounting interface depending on the when designing the system. Solenoid spool valves are suitable for

type of pilot operation. Spool detented or with spring reset. Precise machine tools and handling systems of any kind.

spool fit, low leakage, long service life time. Spool made from har-
dened steel, valve body from high quality hydraulic cast steel.

SYMBOL

AB3 AB1 AB2
A B A B A B
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)
which results in an overall value. Pilot control type xi is not available with a back pressure cartridge.

www.wandfluh.com Illustrations are not binding Data subject to change 1/6 Edition: 20 16 1.9-32 E