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M-F 7a-5p EST 800-222-2177

EFV MRS Series Adjustable Excess Flow Valve — With Integral Manual Reset For Preventing Uncontrolled Flows of Gases and Liquids.


  • Positive shut off with internal reset mechanism
  • Field Adjustable
  • Resets Manually
  • Materials: 316ss or Brass Body Standard
  • Detects Excess Flows
  • Detects an Increase in Viscosity of Media
  • Function: Shuts Off Flow
  • Output: Switch Contact (Optional)


  • Plant Lines
  • Regulator Failure
  • Fitting Failure
  • Toxic Gases and Liquids
  • Gas distribution systems
  • Gas Analyzers
  • Loss Control