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ASCO™ Series HV427 Gas Shutoff Valves
The ASCO Series HV426 is a line of low-temperature stainless steel fuel gas shutoff valves for commercial and industrial gas burners in harsh environments.
Its DC peak-and-hold constructions offer low power consumption, and robust construction provides consistent and reliable operation. The valves have resilient soft seating for tight shutoff and require zero minimum pressure differential. Suitable for applications such as tank heaters, line heaters, incinerators and flare stacks.
ASCO™ Series HV427 Gas Shutoff Valves


2 way - 2/2 Normally Closed
Valve Actuation
Natural Gas
Pipe / Port Size
1/4 "; 1/2 "; 3/8 "; 3/4 "
Body Material
Stainless Steel
24 AC; 110 AC; 120 AC; 230 AC; 12 DC; 24 DC
Port Type
From 6.0 Cv to 14.0 Cv; From 2.0 Cv to 6.0 Cv; From 1.0 Cv to 2.0 Cv
Max Differential / Max Operating Pressure
Vacuum to 150 PSIG
Operating Environment
Indoor; Outdoor; Hazardous
Standards & Regulations


  • Ambient temperature range of -40° F to 125° F (-40° C to 52° C) for a wide range of applications
  • Explosionproof Class I Div I enclosure standard
  • Maximum operating pressure differential up to 50 psi (3.4 bar)
  • Meets Automatic Gas Valves Z21.21, CSA 6.5 C/I Safety Shutoff standard
  • Complies with ANSI/ISA- single-seal requirements
  • Meets the metallurgical requirements of NACE MR-0175 (DC only)
  • Offered in 1/4", 3/8", 1/2", 3/4" and 1" pipe sizes
  • Available in AC and DC voltages


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