Page 248 - Softbound_Edition_19_en
P. 248
Spool valve
Spool valve Spool valve
HYDRAULIC CONNECTION ACCESSORIES Spool valve
NG3-Mini
Fixing screws Data sheet 1.0-60 Flange construction
P Threaded subplates Data sheet 2.9-05 ◆ roller operated
A B 11 21 Multi-station subplates Data sheet 2.9-45 ◆ 4/2-way with spring reset
◆ Q = 8 l/min
T T 0 Horizontal mounting blocks Data sheet 2.9-85 max
◆ p = 350 bar
Technical explanations Data sheet 1.0-100 max
10
Filtration Data sheet 1.0-50
20
DESCRIPTION APPLICATION
Direct operated valve, roller operated with 4 connections in 5 Spool valves are mainly used for controlling direction of movement
SEALING MATERIAL STANDARDS chamber design. Without actuation, the spool is switched back to and stopping of hydraulic cylinders and motors. The direction of
NBR or FKM (Viton) as standard, choice in the type code Mounting interface Wandfluh standard the offset position. Precise spool fit, low leakage, long service life movement is determined by the position of the spool and its symbol.
Manually or mechanically operated valves are particularly suitable
time. Spool made from hardened steel, body from high quality
Contamination ISO 4406 hydraulic cast steel. for use in installations where no electric current is available or for
efficiency applications in explosion hazard areas. Miniature values are used
where both, reduced dimensions and weight are important.
INSTALLATION NOTES SURFACE TREATMENT
Mounting type Flange mounting ◆ The valve body is painted with a two component paint
3 fixing holes for ◆ The hand lever housing and the cover are zinc-nickel coated TYPE CODE
socket head screws M4 x 30 WD T F A03 - - #
Mounting position Any, preferably horizontal Spool valve, direct operated
Tightening torque M = 2,6 Nm (quality 8.8, zinc coated) Roller with spring reset
D
Fixing screws
Flange construction
Note! The length of the fixing screw depends on the base
material of the connection element. Mounting interface acc. to Wandfluh standard, NG3-Mini
Designation of symbols acc. to table Operation a-side …1
Operation b-side …2
Sealing material NBR
FKM (Viton) D1
Design index (subject to change)
1.5-15
GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
Designation 4/2-spool valve Working pressure p = 350 bar (p < 20 bar)
T
max
Construction Direct operated p = 315 bar (p > 20 bar)
max
T
Mounting Flange construction Tank pressure p T max = 100 bar
Nominal size NG3-Mini according to Wandfluh Maximum volume flow Q = 8 l/min, see characteristics
max
standard Leakage oil See characteristics
Actuation Roller actuated Fluid Mineral oil, other fluid on request
2
2
Ambient temperature -25…+70 °C Viscosity range 12 mm /s…320 mm /s
Weight 0,62 kg Temperature range -25…+70 °C (NBR)
MTTFd 150 years fluid -20…+70 °C (FKM)
Contamination Class 20 / 18 / 14
efficiency
Filtration Required filtration grade ß 10…16 ≥ 75,
see data sheet 1.0-50
ACTUATION
Actuation Roller
Actuation stroke s = 1,7 mm
Actuation force F = 90 - 120 N
Wandfluh AG Postfach CH-3714 Frutigen b
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: 21 33 1.5-10 E www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 21 33 1.5-15 E
Page 248
