OPW 178S Series External AST Emergency Shut-Off Valve
$372.73
The OPW 178S Series External AST Shut-Off Valve is designed to shut off product flow from an aboveground storage tank, bulk loading rack or any place in the fuel supply line in the event of a fire. The 178S installs in-line on fuel supply piping. A fusible link attached to a spring-operated lever holds the poppet normally open. In the event of a fire, the fusible link melts at 160°F, allowing the spring-actuated poppet to shut off the flow of product in the fuel supply line. The 178S is available in 2″ female NPT connections.
- 178S Ductile Iron Construction – valve is manufactured from a ferrous metal to resist fracturing from high temperatures.
- Full-Bore Inside Diameter for Superior Flow Rates – maximizes flow rates in the fuel supply lines.
- Protected Main Poppet Disc – main poppet seal is held out of the main flow stream and protected from damage due to dirt or debris in the fuel.
- Compensator Ring on Main Poppet Carrier – ensures full seating of the main poppet for a tight seal.
- Viton® Main Disc and Stem Seat – compatible with gasoline, diesel, kerosene, ethanol, methanol, MTBE, fuel oil, mogas, motor oil and various other blends of fuel.
- Rated At Normal Pressure Limit of 125 psi (8.6 bar) (cold)
- Non-Shock Pressure Limit of 200 psi (13.8 bar)
- Temperature Limit 225° F
- Body and Cap:Â Ductile iron
- Packing Nut and Stem:Â Stainless steel
- Disc: Viton®
- Stem Seat: Viton®
- Seat ring:Â Brass
- Cap and Packing Nut Seals: Viton®
| Weight | 5.35 lbs |
|---|---|
| Dimensions | 6 × 3 × 3 in |
| Size | 3/4", 1", 1.25", 1.5", 2", 3" |
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