Diesel Engine Controls

SF08-20 — Poppet-Type, 2-Way, Normally Closed, High Pressure
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SF08-20 Valve

SYMBOL:
SF08-20 Valve symbol

DESCRIPTION
A solenoid-operated, 2-way, normally closed, piloted poppet-type, screw-in cartridge
valve, intended to act as a blocking or load-holding device for diesel engine braking applications.

OPERATION
When de-energized, the SF08-20 acts as a check valve, allowing flow from 1 to 2, while blocking
flow from 2 to 1. When energized, the cartridge’s poppet lifts to open the 2 to 1 flow path. In this
mode, flow from 1 to 2 is severely restricted.

FEATURES
• Compatible with diesel fuel types 1 and 2.
• Corrosion-resistant plating.
• Stainless steel option - consult factory.
• 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)
Proof Pressure: 483 bar (7000 psi)
Burst Pressure: 965 bar (14000 psi)
Flow: Up to 19 lpm (5 gpm)
Internal Leakage: 0.15 cc/minute (3 drops/minute) max. at 345 bar (5000 psi)
Temperature: -54° to 104°C (-65° to 225°F) 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 rectified).
  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: Compatible with ISO Classification 19 (25 µm), NAS classification
Fluids: For use with common diesel fluids
Installation: No restrictions; See page 9.020.1
Cavity: VC08-2; See page 9.108.1_2w
Cavity Tool: CT08-2xx; See page 8.600.1
Seal Kit: SK08-2P-T; See page 8.650.1
Coil Nut: Part No. 7004400
PERFORMANCE:

SF08-20 Valve Performance Chart

  DIMENSIONS:

SF08-20 Valve Dimensions

MATERIALS:

Cartridge: Weight: 0.01 kg. (0.22 lbs.);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and back-ups standard.

Ported Body: Weight: 0.54 kg.
(1.2 lbs.); Ductile Iron standard, rated to 345 bar (5000 psi); Aluminum bodies available; dimensions may differ.
See page 8.008.1_2w.

Standard D-Coil: Weight each:
0.11 kg. (0.25 lbs.); Unitized thermoplastic encapsulated, Class H high temperature magnetwire.
See page 3.200.1_08-size.

E-Coil: Weight: 0.14 kg. (0.3 lbs.); Perfect wound, fully encapsulated with rugged external metal shell; Rated up to IP69K with integral connectors.
See page 3.400.1_08-size.
  ORDERING CHART:

SV08-20 Ordering Chart

More Diesel Control Products.
PDF file of this page. STP file for SF08-20. Get Custom Powertrain Control Engineering Assistance