Page 286 - Softbound_Edition_19_en

BK4x4
Spool valve BK4x4

TYPE CODE PERFORMANCE SPECIFICATIONS
2
B K 4 - # Oil viscosity u = 30 mm /s
Mounting interface acc. to Wandfluh standard
p = f (Q) Performance limits Q = f (Q) Leakage volume flow characteristics
L
Pneumatically operated per control edge
p [bar] Z43/D43 (1) Z41/D41 (1+2) Q [cm /min]
3
Number of control ports 350 K0100 Z42/D42 (1+2) 50 K0126
300 Z43/D43 (2)
Z44/D44 (2)
Designation of symbols acc. to table 250 Z45/D45 (1+2) 40
200 J40 (1) 30
Sealing material NBR 150 Z44/D44 (1) Z40 (1+2)
FKM (Viton) D1 20
100 10
50 J40 (2)
Design index (subject to change) 0 0
1.6-20 0 5 10 15 20 Q [l/min] 0 50 100 150 200 250 300 350 p [bar]
J40/Z40/D41/D42/D44/D45

GENERAL SPECIFICATIONS ACTUATION
Designation 4/2-, 4/3-spool valve Actuation Pneumatically operated
Construction Direct operated Execution Actuation BKII Δp = f (Q) Pressure drop volume flow characteristics Volume flow direction
Mounting Flange construction Pilot pressure p V min = 2.5 bar at p = 20 bar p [bar] 6 Symbol P - A P - B P - T A - T B - T
T
K0101
Nominal size NG4-Mini according to Wandfluh p V min = 5 bar at p = 100 bar 30 5 Z40 / J40 5 5 - 2 2
T
25
standard Control volume V = 2.5 cm 3 20 4 D41 / Z41 5 5 - 2 2
Actuation Pneumatically operated 15 3 2 D42 / Z42 5 5 - 1 1
Ambient temperature -25…+70 °C (NBR) 10 1 D43 / Z43 4 4 6 2 2
-20…+70 °C (FKM) 5 D44 / Z44 4 4 3 2 2
Weight 0,82 kg (actuation) SEALING MATERIAL 0 D45 / Z45 4 4 - 2 2
1,04 kg (actuations) NBR or FKM (Viton) as standard, choice in the type code 0 5 10 15 20 Q [l/min]
MTTFd 150 years

DIMENSIONS
HYDRAULIC SPECIFICATIONS MANUAL OVERRIDE 4/3-way valve (spring centred) 4/2-way valve (spring reset)
Working pressure p = 350 bar In mechanical control head integrated. Actuation by pressing the pin 4/2-way valve (impulse)
max
Tank pressure p = 100 bar 9.5
T max
Maximum volume flow Q = 20 l/min, see characteristics G1/8" 5.2 MD=5.5Nm
max STANDARDS
Mounting interface Wandfluh standard 6
Leakage volume flow See characteristics
Fluid Mineral oil, other fluid on request Contamination ISO 4406 35 35
efficiency
Viscosity range 12 mm /s…320 mm /s 32 38
2
2
Temperature range -20…+70 °C
fluid SURFACE TREATMENT 40 10 50 20 30
Contamination Class 20 / 18 / 14 ◆ The valve body is painted with a two component paint 10 MD=2.8Nm MD=2.8Nm
efficiency ◆ The pneumatic actuation, the cover and the socket head screws 38 54 10
Filtration Required filtration grade ß 10…16 ≥ 75, are zinc coated 146 110
see data sheet 1.0-50
INSTALLATION NOTES ACCESSORIES
HYDRAULIC CONNECTION PARTS LIST
Mounting type Flange mounting Fixing screws Data sheet 1.0-60 Position Article Description
3 fixing holes for Threaded subplates Data sheet 2.9-10 28
socket head screws M5 x 40 Multi-station subplates Data sheet 2.9-50 14 10 254.2000 Pneumatic actuation BK II
Mounting position Any, preferably horizontal Horizontal mounting blocks Data sheet 2.9-90 20 057.4202 Cover
Tightening torque M = 5,2 Nm (screw quality 8.8, Technical explanations Data sheet 1.0-100 P 30 246.1113 Socket head screw M4 x 12 DIN 912
D
zinc-coated) Fixing screws 40 246.1146 Socket head screw M4 x 45 DIN 912
Hydraulic fluids Data sheet 1.0-50 A B 14 27
Note! The length of the fixing screw depends on the base Filtration Data sheet 1.0-50 T 50 160.2052 O-ring ID 5,28 x 1,78 (NBR)
material of the connection element. T0

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: 16 29 1.6-20 E www.wandfluh.com Illustrations are not binding Data subject to change 3/3 Edition: 16 29 1.6-20 E
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