SF08-20 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 low fl ow circuits.
OPERATION
When de-energized, the SF08-20 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, fl ow from
➀ to ➁ is severely restricted. If this path is required, see model
SF08-22, page 1.042.1.
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.
• Compact size.
RATINGS
Operating Pressure: 345 bar (5000 psi)
Flow: See Performance Chart
Internal Leakage: 0.15 cc/minute (3 drops/minute) max. at 345 bar (5000 psi)
Temperature: -40 to 120°C with standard 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
7.4 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: VC08-2; See page 9.108.1
Cavity Tool: CT08-2XX; See page 8.600.1
Seal Kit: SK08-2P-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:
PERFORMANCE (Cartridge Only)
1.012.1
11.0/160
8.3/120
5.5/80
2.8/40
3.8
1
7.5
2
18.9
5
FLOW lpm/gpm
PRESSURE DROP bar/psi
➁ to ➀ energized ——
➀ to ➁ de-energized - - - -
32 cSt/150 sus oil at 40°C
22.7
6
12.4/180
11.4
3
15.1
4
26.5
7
SOLENOID VALVES
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SF08-20
DIMENSIONS
1.012.2
Porting
Cartridge Only 0
SAE 6 6TD
SAE 8 8TD
1/4 in. BSP* 2BD
3/8 in. BSP* 3BD
*BSP Body; U.K. Mfr. Only
1.40
35.6
1.88
47.7
1.41
DIA.
35.8
0.43
10.9
Standard
Coil View
E-Coil
View
1.25
31.8
2.25
57.2
1.63
41.3
0.28
7.1
(2)
Thru
0.20
5.1
1.50
38.1
2.25
57.2
0.90
22.9
0.61
15.5
Ductile iron
body shown
MATERIALS
Cartridge: Weight: 0.09 kg.
(0.20 lbs.); Steel with hardened
work surfaces. Zinc-plated
exposed surfaces; Polyurethane
cast O-rings and Fluorocarbon
back-up standard.
Ported Body: Weight: 0.54 kg.
(1.2 lbs.), Ductile iron standard;
rated to 345 bar (5000 psi);
See page 8.008.1.
Standard Coil: Weight: 0.11 kg.
(0.25 lbs.); Unitized thermoplastic
encapsulated, Class H high
temperature magnetwire;
See page 3.200.1.
E-Coil: Weight: 0.14 kg. (0.3 lbs.);
Fully encapsulated with rugged
external metal shell; Rated up to
IP69K with integral connectors;
Note: See page 3.400.1 for all
E-Coil retrofi t applications.
Option
None
(Blank)
Manual
Override M
SF08-20__ - __ __ __ - __ - __ __ __ __ __
TO ORDER
Seals
Polyurethane (Std.) P
Termination (VDC)
Std. Coil
DS Dual Spades
DG DIN 43650
DL Leadwires (2)
DL/W Leads w/Weatherpak
®
Connectors
DR Deutsch DT04-2P
Termination (VAC)
Std. Coil
AG DIN 43650
AP 1/2 in. Conduit
Termination (VDC)
E-Coil
ER Deutsch DT04-2P
(IP69K Rated)
EY Metri-Pack
® 150
(IP69K Rated)
Coils with internal diode are
available. Consult factory.
Voltage
Std. Coil
0 Less Coil**
10 10 VDC
†
12 12 VDC
24 24 VDC
36 36 VDC
48 48 VDC
24 24 VAC
115 115 VAC
230 230 VAC
**Includes Std. Coil Nut
†
DS, DW or DL
terminations only
E-Coil
10 10 VDC
12 12 VDC
20 20 VDC
24 24 VDC
®
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