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BH4x4
Spool valve Spool valve

HYDRAULIC CONNECTION ACCESSORIES Spool valve
Fixing screws Data sheet 1.0-60 Flange construction NG4-Mini
28 Threaded subplates Data sheet 2.9-10 ◆ roller operated Wandfluh standard
14 4/2-way with spring reset
Multi-station subplates Data sheet 2.9-50 ◆
◆ Q = 30 l/min
P Horizontal mounting blocks Data sheet 2.9-90 max
◆ p = 350 bar
max
A B Technical explanations Data sheet 1.0-100
14 27
T T0 Hydraulic fluids Data sheet 1.0-50
Filtration Data sheet 1.0-50 DESCRIPTION APPLICATION

Direct operated valve, roller operated with 4 connections in 5 Spool valves are mainly used for controlling direction of movement
chamber design. Without actuation, the spool is switched back to and stopping of hydraulic cylinders and motors. Manually or

the offset position. mechanically operated valves are particularly suitable for use in

installations where no electric current is available or for appli-
SEALING MATERIAL STANDARDS cations in explosion hazard areas.

NBR or FKM (Viton) as standard, choice in the type code Mounting interface Wandfluh standard
Contamination ISO 4406
efficiency
TYPE CODE
WD T F A04 - - #
INSTALLATION NOTES SURFACE TREATMENT Spool valve, direct operated
Mounting type Flange mounting ◆ The valve body is painted with a two component paint Roller with spring reset
3 fixing holes for ◆ The hand lever housing, the screws and the cover are zinc
socket head screws M5 x 40 coated Flange construction
Mounting position Any, preferably horizontal Mounting interface according to Wandfluh standard, NG4-Mini
Tightening torque M = 5,2 Nm (screw quality 8.8, zinc
D
coated) Fixing screws Designation of symbols acc. to table Operation a-side …1
Operation b-side …2
Note! The length of the fixing screw depends on the base
material of the connection element. Sealing material NBR
FKM (Viton) D1
NBR 872 y-Z604
Design index (subject to change)
1.5-46

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
Designation 4/2-spool valve Working pressure p = 350 bar
max
Construction Direct operated Tank pressure p T max = 100 bar
Mounting Flange construction Maximum volume flow Q = 30 l/min, see characteristics
max
Nominal size NG4-Mini according to Wandfluh Leakage oil See characteristics
standard Fluid Mineral oil, other fluid on request
Actuation Roller actuated Viscosity range 12 mm /s…320 mm /s
2
2
Ambient temperature -25…+70 °C Temperature range -25…+70 °C (NBR)
Weight 0,76 kg fluid -20…+70 °C (FKM)
MTTFd 150 years Contamination Class 20 / 18 / 14
efficiency
Filtration Required filtration grade ß 10…16 ≥ 75,
ACTUATION see data sheet 1.0-50
Actuation Roller
Actuation stroke s = 2 mm
Actuation force F = 110 - 135 N at p
b T max

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: 16 33 1.5-20 E www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 19 23 1.5-26 E
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