Page 238 - Softbound_Edition_19_en

Solenoid operated spool valve

Solenoid operated spool valve with soft switching
NG10
Flange construction ISO 4401-05
◆ 4/3-way with spring centred mid position
◆ 4/2-way with spring reset
◆ Q = 120 l/min
max
◆ p = 350 bar
max

DESCRIPTION APPLICATION
Direct operated solenoid spool valve with 4 connections in 5 cham- Normal solenoid spool valves switch very quickly. This can lead to
ber design. With the solenoids deenergised, the spool is held in the shocks in the hydraulic system which can cause mechanical wear
center position by the spring (4/3), or switched back to the offset and have a negative effect on operation. The soft switching valves
position (4/2). The soft switching of the valve is achieved by means slow down and dampen the switching movements which benefits
of an optimum combination of the orifice and spool design. Precise the system. Optimum results can be achieved if all 4 connections

spool fit, low leakage, long service life time. Spool made from are connected and the valve is properly vented.

hardened steel, valve body from high quality hydraulic cast steel.
Wide range of standard and special voltages.

SYMBOL

AB1 AB2

A B
a b a b
a b a b
P T
ACB AC1 CB2
A B A B A B
a 0 b a b
a b a b
P T P T P T

ADB AD1 DB2
A B A B A B
0
a b a b
a b a b
P T P T P T

BEA BE1 EA2
A B A B A B
a b a b
a 0 b a b
P T P T P T

AFB AF1 FB2
A B A B A B
0
a b a b
a b a b
P T P T P T

www.wandfluh.com Illustrations are not binding Data subject to change 1/5 Edition: 22 09 1.4-42 E