Page 340 - Softbound_Edition_19_en

Spool valve
Spool valve Spool valve

PERFORMANCE SPECIFICATIONS DIMENSIONS
Oil viscosity u = 30 mm /s 4/3-way spool valve (spring centring)
2
4/2-way spool valve (impulse)
Q = f (p) Performance limits Q = f (p) Leakage volume flow characteristic
*Minimum pilot pressures measured with back per control edge 304.7
pressure free pilot oil drain Q [cm /min] 57.2 45
3
P [bar] AB3 8 bar 200 K4123
350 K4122 ACB 14 bar
300 ADB 10 bar 150
AGB 14 bar
250 AB1 12 bar 100 20
200 AB2 12 bar
150 ACB 12 bar 50
100 AFB 8 bar
AGB 12 bar
50 AEB 10 bar 0
0 0 50 100 150 200 250 300 350 p [bar] a b
0 20 40 60 80 100 120 140 160 Q [l/min] 191.1
80 Y=G1/8" X=G1/8" 19.5
70
∆p = f (Q) Pressure drop volume flow characteristics Volume flow direction 90*
Spool type / flow direction Symbol P - A P - B P - T A - T B - T 60
∆p [bar] AB1 / AB2 / AB3 3 3 - 2 1 35 69.1
20 K4124 1 ACB / AC1 / CB2 3 3 - 2 1 29
15 2 ADB / AD1 / DB2 3 3 - 2 1
3
10 4 AEB / AE1 / EB2 3 3 1 2 1 10 40 30 6.5 68
AFB / AF1 / FB2 2 2 4 4 2 10.5
5
AGB / AG1 / GB2 2 2 - 2 1 20.1 93.2
0
0 20 40 60 80 100 120 140 160 Q [l/min] 133.4

* Pos.90 Control plate with type of pilot operation te, pi, pe only
∆p = f (Q) Pressure drop volume flow characteristic 4/2-way spool valve (spring reset)
Back pressure cartridge (in addition to P-A or P-B 189.1
of the main valve)
Δ p [bar]
16 K4132
12

8
4 Note! *Please ensure the minimum pilot pressure. Attention a
internal pilot connections: valves only switch when the 171.6
0 12
0 20 40 60 80 100 120 140 160 Q [l/min] pressure difference in the valve is high enough. Further
details on request.

SURFACE TREATMENT SEALING MATERIAL

◆ The main valve body, the distance plate, the screw plugs, the NBR or FKM (Viton) as standard, choice in the type code 219.1
slip-on coil and the armature tube are zinc-nickel coated
◆ The pilot valve body is coated with a two component paint

www.wandfluh.com Illustrations are not binding Data subject to change 4/6 Edition: 20 09 1.9-40 E www.wandfluh.com Illustrations are not binding Data subject to change 5/6 Edition: 20 09 1.9-40 E
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