Morrison Bros. 446 Stainless Steel Emergency Shut-Off Valve

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Morrison Bros.
Stainless Steel
3.20 LBS
$764.21 - $817.95
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The 446 normally open valve is designed to shut off liquid flow in the event of a fire or excessive temperatures. This emergency shut-off valve is installed in the fuel line from a storage tank to fuel burning equipment; such as back-up generators, boilers, and other flammable liquid burning appliances.


  • cULus listed to ULC/ORD-C842 ? Valves for Flammable and Combustible Liquids (See details below in Code Compliance)
  • 165°F (73°C) fusible link activates spring closure
  • 3/4? (19.05 mm) or 1? (25.4 mm) female NPT threaded connections
  • Compact size reduces operational footprint requirement
  • Easy to install and maintain


  • Operating pressure rated at 50 psi (433.7 kPa)
  • Operating temperature range rated at -20°F (-28°C) to 125°F (51°C)
  • Body: 316 stainless steel
  • Cap, shaft, tail fitting, poppet, and nut: 303 stainless steel
  • Lever arm: 304 stainless steel
  • Handle: 356-T6 aluminum
  • Spring: 17-7 stainless
  • Fuse link: 165°F (73°C)
  • O-ring and disc: Viton®


Installation & Maintenance Instructions (PDF Download)