Page 298 - Softbound_Edition_19_en

Spool valve
Spool valve Spool valve

TYPE CODE PERFORMANCE SPECIFICATIONS
2
WD F F A03 - - # Oil viscosity u = 30 mm /s
Spool valve, directly operated
Δp = f (Q) Pressure drop-volume flow characteristics Volume flow direction
Hydraulically operated p [bar] Symbol P - A P - B P - T A - T B - T
16 K4260 AB1 / AB2 / AB3 3 3 - 2 2
Flange construction
12 ACB 3 3 - 1 1
Mounting interface acc. to Wandfluh standard, NG3-Mini ADB 2 2 - 1 1
8 3
2
Designation of symbols acc. to table 1
4
Sealing material NBR 0
FKM (Viton) D1 0 1 2 3 4 5 6 7 8 Q [l/min]
Design index (subject to change)
1.7-15
DIMENSIONS HYDRAULIC CONNECTION

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS 7.5
4.3 P
Designation 4/2-, 4/3-spool valve Working pressure p = 350 bar (p < 20 bar) MD= 2.6Nm
max T A B 11 21
Construction Direct operated p = 315 bar (p > 20 bar) 5
T
max
Mounting Flange construction Tank pressure p T max = 90 bar G1/8" G1/8" T T 0
Nominal size NG3-Mini according to Wandfluh Resp. 10 bar lower than the control 29 23 25 30 10
standard pressure 20
Actuation Hydraulically operated Maximum volume flow Q = 8 l/min, see characteristics
max
Ambient temperature -25…+70 °C 10 20 MD= 1.2Nm 30
Weight 0,38 kg Leakage oil See characteristics 21 38 21
MTTFd 150 years Fluid Mineral oil, other fluid on request 80
Viscosity range 12 mm /s…320 mm /s
2
2
Temperature range -25…+70 °C (NBR)
fluid -20…+70 °C (FKM) PARTS LIST ACCESSORIES
ACTUATION Contamination Class 20 / 18 / 14 Position Article Description Fixing screws Data sheet 1.0-60
Actuation Hydraulically operated efficiency 10 056.4701 Cover Threaded subplates Data sheet 2.9-05
Pilot pressure p = 10 bar Filtration Required filtration grade ß 10…16 ≥ 75, 20 246.0114 Socket head screw M3 x 14 DIN 912 Multi-station subplates Data sheet 2.9-45
min
p = 100 bar see data sheet 1.0-50
max 80 160.2045 O-ring ID 4,50 x 1,50 (NBR) Horizontal mounting blocks Data sheet 2.9-85
Control volume V = 0,08 cm 3
Technical explanations Data sheet 1.0-100
Filtration Data sheet 1.0-50
PERFORMANCE SPECIFICATIONS
Oil viscosity u = 30 mm /s SEALING MATERIAL STANDARDS
2
p = f (Q) Performance limits Q = f (Q) Leakage volume flow characteristics
L NBR or FKM (Viton) as standard, choice in the type code
per control edge Mounting interface Wandfluh standard
Contamination ISO 4406
p [bar] Q [cm /min]
3
350 K0529 40 K4262 efficiency
300
250 30 INSTALLATION NOTES SURFACE TREATMENT
200
150 20 Mounting type Flange mounting ◆ The valve body is painted with a two component paint
100 3 fixing holes for ◆ The covers are zinc-nickel coated
50 10 socket head screws M4 x 30
0
0 1 2 3 4 5 6 7 8 Q [l/min] 0 0 50 100 150 200 250 300 350 p [bar] Mounting position Any, preferably horizontal
Tightening torque Fixing screws M = 2,6 Nm (quality 8.8,
D
zinc coated)
Note! The length of the fixing screw depends on the base
material of the connection element.
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 2/3 Edition: 21 30 1.7-15 E www.wandfluh.com Illustrations are not binding Data subject to change 3/3 Edition: 21 30 1.7-15 E
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