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ASCO™ Series SV311 Gas Shutoff Valve
The ASCO Series SV311 are highly reliable gas safety shutoff valves for control of commercial and industrial gas burners found in generators, heating equipment, and ovens.
The valves are designed with 2-way, normally closed operation and have direct lift with resilient soft seating for tight shutoff.
ASCO™ Series SV311 Gas Shutoff Valve


Valve Actuation
Body Material
Natural Gas
Pipe / Port Size
1/4 "; 3/8 "; 1/8 "
Port Type
2 way - 2/2 Normally Closed
24 AC, 110 AC, 120 AC, 220 AC, 230 AC
Max Differential / Max Operating Pressure
150-500 PSIG
Operating Environment
Indoor, Outdoor
Standards / Regulations
CSA, FM, Type 1, Type 2, Type 3, Type 3S, Type 4, Type 4X, UL


  • Available in 1/8-inch to 3/8-inch sizes
  • Provided with 1/8" NPT downstream pipe tap with plug for routine testing
  • Opening and closing times are less than 1 second
  • Suitable for ambient temperatures up to 175° F
  • Mountable in any position