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Models 912, 913, 918, 919
ASME Section VIII, Steam/Air/Gas/Liquid, 'UV' National Board Certified. Also available for Vacuum Service.

Model Descriptions

  • Model 912: Full nozzle design. SS warn ring and disc with brass/bronze base. Bronze/brass body and bonnet.
  • Model 913: Full nozzle design. Bronze/brass body and bonnet. 316 SS trim (base, disc and disc holder).
  • Model 918: Same as Model 912 except resilient seat/seal. Superior 'leak-free' performance.
  • Model 919: Same as Model 913 except resilient seat/seals. Superior 'leak-free' performance. Bronze body and bonnet. 316 SS trim (base, disc and disc holder).

Pressure and Temperature Limits

  • Models 912, 913, 918, 919 - Steam 3 to 250 psig -60° to 406°F
  • Models 912, 918 - Air/Gas/Liquid 3 to 300 psig -60° to 406°F
  • Models 913, 919 - Air/Gas/Liquid 3 to 900 psig -60° to 406°F
  • Vacuum 6 through 29-inch HG - 300°F
  • Maximum back pressure 50 psig - threaded cap and packed lever.

Applications

  • 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.
  • Optional materials for low temperature - cryogenic applications
  • Oil/gas separators.
  • Overpressure relief and protection of pumps, tanks, lines, and hydraulic systems.
  • By-pass relief or pressure regulation.

Options

  • Threaded cap
  • Threaded cap with gag
  • Plain lever
  • Plain lever with gag
  • Plain lever with vibration dampener
  • Packed lever
  • Packed lever
  • Packed lever with gag

Features and Benefits

  • Available with soft seat.
  • Threaded cap is standard (back pressure tight).
  • Hex on valve nozzle provides for easy installation.
  • Single control ring offers easy adjustability of blowdown.
  • Pivoting disc design corrects misalignment and offers exceptional performance.
  • Guide to nozzle ratio reduces friction
  • Full nozzle design for optimum flow performance.
  • Threaded side outlet for piped off discharge to eliminate fugitive emissions.
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