Page 308 - Softbound_Edition_19_en

Spool valve

Spool valve
NG6
Flange construction ISO 4401-03
◆ hydraulically actuated
◆ 4/2-way impulse valve
◆ 4/3-way with spring centred mid position
◆ 4/2-way with spring reset
◆ Q = 80 l/min
max
◆ p = 350 bar
max

DESCRIPTION APPLICATION
Hydraulically operated spool valve via pilot head with 4 connec- Spool valves are mainly used for controlling direction of movement
tions in a 5 chamber system. Spool detented or with spring reset. and stopping of hydraulic cylinders and motors.

Without actuation, the spool is held in the center position by the
spring (4/3), or switched back to the offset position (4/2). With the

detent, the spool is held in the last switching position selected.

SYMBOL

AB3 AB1 AB2
A B A B A B
x a b y x a b y x a b y
P T P T P T
ACB AC1 CB2
A B A B A B

x a 0 b y x a b y x a b y
P T P T P T
ADB AD1 DB2
A B A B A B
x a 0 b y x a b y x a b y
P T P T P T
BEA BE1 EA2
A B A B A B

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

x a 0 b y x a b y x a b y
P T P T P T
AGB AG1 GB2
A B A B A B
0 b a
x a b y x a y x b y
P T P T P T

www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 22 37 1.7-33 E