Emergency Shut-Off Valve

FIG 446

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. 

Standard Features

cULus  listed to ULC/ORD-C842 – Valves for Flammable and Combustible Liquids (See details below in Code Compliance)

165° F fusible link activates spring closure

1/2", 3/4”, or 1” female NPT threaded connections

Compact size reduces operational footprint requirement

Easy to install and maintain


Optional Criteria

Operating pressure rated at 50 psi

Operating temperature range rated at -20° F to 125° F


Construction Details

  • 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
  • O-ring and disc: FKM


Code Compliance

cULus listed to ULC/ORD-C842

Fig Suffix Size Weight
446 0050 AV 1/2" 3.5
446 0075 AV 3/4" 3.5
446 0100 AV 1" 3.3


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