SF20-22 Poppet, 2-Way, N.C., High Pressure
DESCRIPTION
A solenoid-operated, 2-way, normally closed, piloted poppet-type, screw-in
hydraulic cartridge valve, intended to act as a blocking or load-holding device
for applications requiring low internal leakage.
OPERATION
When de-energized, the SF20-22 acts as a check valve, allowing fl ow from ➀ to ➁,
while blocking fl ow from
➁ to ➀.
When energized, the cartridge’s poppet lifts to open the
➁ to ➀ fl ow path. In this
mode, bidirectional fl ow is allowed.
FEATURES
• Continuous-duty rated coil.
• Hardened seat for long life and low leakage.
• Optional coil voltages and terminations.
• Cartridges are voltage interchangeable.
• Unitized, molded coil design.
• Optional waterproof E-Coils rated up to IP69K.
• Industry common cavity.
RATINGS
Operating Pressure: Maximum: 345 bar (5000 psi); Minimum: 1.4 bar (20 psi).
Pressure rating established per NFPA/T2.6.1 R2-2000 using 90% assurance
and 90% verifi cation levels for 1 million cycles.
Flow: Up to 303 lpm (80 gpm)
Internal Leakage: 10 drops/minute max. at 345 bar (5000 psi)
Operating Temperature: -40 to 100°C with standard Buna N seals
-26 to 204°C with Fluorocarbon seals
-54 to 107°C with Polyurethane seals
Coil Duty Rating: Continuous from 85% to 115% of nominal voltage
Initial Coil Current Draw at 20°C: Standard Coil: 1.2 amps at 12 VDC;
0.13 amps at 115 VAC (full wave rectifi ed);
E-Coil: 1.4 amps at 12 VDC; 0.7 amps at 24 VDC
Minimum Pull-in Voltage: 85% of nominal at 345 bar (5000 psi)
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
5 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC20-2; See page 9.120.1
Cavity Tool: CT20-2XX; See page 8.600.1
Seal Kit: SK20-2x-T; See page 8.650.1
Coil Nut: Part No. 7004400;
For E-coils manufactured prior to 1-1-04, see page 3.400.1 for coil nut info.
SYMBOLS
USASI: ISO:
1.047.1
PERFORMANCE (Cartridge Only)
SOLENOID VALVES
HYDRAFORCE
.com
®
4.1/60
3.1/45
2.1/30
1.0/15
38
10
227
60
189
50
FLOW lpm/gpm
PRESSURE DROP bar/psi
to ~ without cavity undercut ——
to ~ with cavity undercut — —
~ to without cavity undercut – – –
~ to with cavity undercut - - - -
32 cSt/150 sus oil at 40°C
265
70
5.2/75
6.2/90
7.2/105
8.3/120
9.3/135
76
20
151
40
114
30
303
80
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