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Models 19, 20 and 200

Same as Model 20M except with packed lift lever. Maximum back pressure of 50 psig.


  • Both inlet and outlet connections are cast integral with body to permit easy inspection and servicing without disconnecting piping.
  • Beveled seats lapped for optimum resistance.
  • SS spring for optimum corrosion resistance.
  • Optional flange connections available.

Model 19

Pressure Limit:1 to 300 psig
Temperature Limit:-60° to 406°F
Sizes (NPT):1/2'', 3/4'', 1'', 1-1/4'', 1-1/2'', 2'', 2-1/2'', 3''


  • Non-code liquid relief.
  • Overpressure relief and protection of pumps, tanks, lines and hydraulic systems.
  • Pressure regulation.
  • Continuous bypass relief.

All bronze, equipped with handwheel for easy adjustment within spring ranges.