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Models 910, 911, 916, 917, 920, 921, 927

CS body and bonnet with SS trim.


  • Available with soft seats.
  • Threaded cap standard (back pressure tight). Maximum back pressure 50 psig [3.4 barg].
  • Hex on valve nozzle provides for easy installation.
  • Single control ring offers easy adjustment of blowdown.
  • Pivoting disc design offers exceptional seat alignment.
  • Guide to nozzle ratio reduces friction.
  • Valve bodies are heavy duty castings.
  • Full nozzle design for optimum flow performance.
  • Threaded side outlet for piped off discharge to eliminate fugitive emissions.

Model 910

Pressure Limit:3 to 900 psig
Temperature Limit:-20°/800°F [-28.9°/427°C]


  • Air/gas compressors, intercoolers, aftercoolers.
  • Liquid filled pressure vessels/systems, ASME Section VIII (UV).
  • Pressure vessels - containing gas, air, liquid or steam, including tanks and receivers.
  • Vacuum systems including pumps, tanks and equipment.
  • Oil/gas separators.
  • Overpressure relief and protection of pumps, tanks, lines and hydraulic systems.
  • Bypass relief or pressure regulation.

CS body and bonnet with SS trim.