ASCO 047 Series Manual Reset Valves

Brand: ASCO

The ASCO Series 047 are manual reset versions of the sturdy ASCO 342 Series (1/4-inch and 3/8-inch NPT) and Series 344 (1/2-inch to 1-inch NPT) valves. The valves come in electrically tripped (trips when energized), no-voltage release (trips when de-energized), or free-handle constructions. They are ideal for mission-critical applications in refining and chemical production.
  • 1/4-inch and 3/8-inch NPT models are direct acting to provide maximum flow for their size.
  • 1/2-inch to 1-inch NPT versions have poppet construction for high flows and tight shutoff.
  • Once tripped, the valves can only be manually reset to automatic operation.
  • Intrinsically safe constructions are available for hazardous environments.



Body Material

  • Brass, Stainless Steel


  • From 0.1 Cv to 0.5 Cv


  • 3-Way - 3/2 Universal

Maximum Differential, Maximum Operating Pressure

  • Vacuum to 150 psig


  • Air, Inert Gas, Light Oil, Steam, Water

Operating Environment

  • Corrosive, Hazardous, Indoor

Pipe / Port Size

  • 1/2

Port Type

  • Female NPT

Standards & Regulations

  • CSA, Typical 3, Typical 7, Typical 9

Valve Actuation

  • Solenoid - Latching


  • 24 AC, 120 AC, 480 AC, 6 DC, 12 DC, 24 DC, 120 DC, 240 DC / 60

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