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178S Series External AS Emergency Shut-Off Valve
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OPW 178S-6130 178S Series External AS Emergency Shut-Off Valve

2 in. FNPT Inlet/Outlet

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Model # Description Price Qty
178S-6130 2 in. FNPT Inlet/Outlet $611.28
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OPW - 178S-6130 - 178S Series External AS Emergency Shut-Off Valve

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.

Construction Materials

  • Body and Cap Ductile iron
  • Packing Nut and Stem Stainless steel
  • Disc Viton®
  • Stem Seat Viton®
  • Seat ring Brass
  • Cap and Packing Nut Seals Viton®

Features

  • 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 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
Model # in. mm lbs kg
178S-6130 2" 51 5.35 2.43

Dimensions

OPW 178S Series External AST Emergency Shut Off Valve Specifications
  in. mm
A 51732 140
B 3116 78
C 3116 62