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Spool valve
Spool valve Spool valve

PARTS LIST STANDARDS Spool valve
Position Article Description Mounting interface ISO 4401-03 Flange construction NG10
ISO 4401-05
15 253.8000 Manual override HB4,5 Contamination ISO 4406 ◆ hydraulically operated
- 251.2224 Seal kit WFAFA06 efficiency ◆ 4/2-way impulse execution detented
◆ 4/3-way with spring centred mid position
◆ 4/2-way with spring reset
Seal kit consisting of ◆ Q =160 l/min
max
50 O-Ring ID 9,25 x 1,78 ◆ p = 350 bar
60 O-Ring ID 17,17 x 1,78 max
70 O-Ring ID 15,60 x 1,78
DESCRIPTION APPLICATION
INSTALLATION NOTES ACCESSORIES Direct operated spool valve hydraulically operated via pilot port Spool valves are mainly used for controlling direction of movement

with 4 connections in a 5 chamber system. Spool detented or with and stopping of hydraulic cylinders and motors.

Mounting type Flange mounting Fixing screws Data sheet 1.0-60 spring reset. Without actuation, the spool is held in the center posi-
4 fixing holes for Threaded subplates Data sheet 2.9-30 tion by the spring (4/3), or switched back to the offset position (4/2).
socket head screws M5 x 50 Multi-station subplates Data sheet 2.9-60 With the detent, the spool is held in the last switching position
Mounting position Any, preferably horizontal selected.

Tightening torque Fixing screws M = 5,2 Nm (screw Horizontal mounting blocks Data sheet 2.9-100
D
quality 8.8, zinc coated) Technical explanations Data sheet 1.0-100
Filtration Data sheet 1.0-50 SYMBOL
Note! The length of the fixing screw depends on the base
material of the connection element.
BA3 BA1 BA2
A B A B A B
x a b y x a b y x a b y
P T P T P T

BCA BCA* BCA*
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

BDA BDA* BDA*
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

BEA BEA* BEA*
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

* These 4/2-way valves with spring reset are being delivered as 4/3-way valves.
Note! When the pilot ports are not actuated (without
pressure), or not needed, the leakage oil must be
discharged.

Wandfluh AG Postfach CH-3714 Frutigen
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 4/4 Edition: 22 37 1.7-33 E www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 22 09 1.7-42 E
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