Kunkle Relief Valves Models 19 and 20

Non-code bronze liquid relief valves

Model 19: All bronze, equipped with handwheel for easy adjustment with spring

Model 20: All bronze, with pressure-tight cap.

Product Features

  • Extra heavy, rugged construction
  • Beveled seats lapped for optimum performance
  • Stainless steel spring for optimum corrosion resistance
  • Both inlet and outlet connections are cast integral with body to permit easy inspection and servicing without disconnecting piping


  • Sizes 1/2″ to 3″
  • Pressures from 1 to 300 psig
  • Temperatures from -60°F to 406°F


  • Air
  • Non-hazardous gas


  • Overpressure relief, pressure regulation, and continuous bypass relief of pumps, tanks, lines, and hydraulic systems
  • Applications include portable or stationary air/gas compressors, pressure vessels, and steam-processing equipment
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