Page 317 - Softbound_Edition_19_en

Spool valve
Spool valve

Spool valve
NG6
Flange construction ISO 4401-03
◆ with integral pressure reversal
◆ 4/2-way
◆ Q = 30 l/min
max
◆ p = 315 bar
max

DESCRIPTION APPLICATION
Spool valve with 4 connections in a 5 chamber system with integral Valves with integral pressure reversal are suitable for controlling
pressure reversal. Switch into the oposite switching position when oscillating movements of a cylinder. Fields of application are press
the adjusted reversal pressure is reached. The reversal takes place controls, assembly robots, feeding systems for wood heating or

e.g. in the end position of the stroke or when the load pressure is other systems with pressure dependent repositioning.

exceeding the adjusted reversal pressure. Cover with pressure
reliefs for adjusting the reversal pressure. Precise spool fit, low
leakage, long service life time. Spool made from hardened steel,
body from high quality hydraulic cast steel.

SYMBOL
Simplified Detailed
A B

a b
a b
P T

A P T B

TYPE CODE

A Q 4 Z 6 0 - #
International standard interface ISO
Integral pressure reversal

Number of control ports

2 switching positions
Nominal size 6
Spool number

Standard
Soft switching W

Sealing material NBR
FKM (Viton) D1

Design index (subject to change)
1.8-20

www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 20 22 1.8-20 E
Page 317