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Fine feed / fast approach unit
Fine feed/fast approach valve

PERFORMANCE SPECIFICATIONS
Oil viscosity u = 30 mm /s
2
Q = f (p) Volume flow pressure characteristic Q = f(p) Volume flow pressure characteristic
Fine feed Fine feed
Q [l/min] Q [l/min]
8 K0821_2 50 K0821_3

6 40 Q N = 40 l/min
Q N = 6,3 l/min 30
4 Q N = 25 l/min
20
Q N = 2,5 l/min
2 10 Q N = 16 l/min
0 0
0 50 100 150 200 250 300 350 p [bar] 0 50 100 150 200 250 300 350 p [bar]

Δp = f (Q) Pressure drop volume flow characteristics Normally Normally
via non-return valve function in the poppet valve closed open
p [bar] de-energised 1 → 2 1 2
16 K0770_1 de-energised 2 → 1 - 3

12 energised 1 → 2 2 4
3
8 energised 2 → 1 3 -
1 4
4
2
0
0 10 20 30 40 50 60 70 80 Q [l/min]

ACTUATION SURFACE TREATMENT
Note! See data sheet of the solenoid operated poppet valve ◆ The sandwich bodies are zinc coated or zinc-nickel coated

ACCESSORIES SEALING MATERIAL

Types of adjustment for screw-in Data sheet 2.0-50 NBR or FKM (Viton) as standard, choice in the type code
cartridges
Threaded subplates Data sheet 2.9-30
Multi-station subplates Data sheet 2.9-60
Module type manifold blocks Data sheet 2.9-100
Technical explanations Data sheet 1.0-100
Filtration Data sheet 1.0-50

VALVES INSTALLED
The following screw-in cartridges are used in the sandwich body.
Article Description Data sheet no.
QZ.PM22 2-way flow control cartridge 2.5-535
SVSPM22 Solenoid operated poppet valve cartridge 1.11-2082

www.wandfluh.com Illustrations are not binding Data subject to change 3/4 Edition: 20 34 2.5-940 E
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