Kunkle Brass Safety & Pressure Relief & Vacuum Relief Valve Models 912, 913, 918, 919 Certified Valves

With a brass and sturdy bronze base, these Kunkle 900 series safety valves are built with multiple variations for a more customized use. Certified for air, gas, steam and liquid, these full nozzle designed valves are used for air and gas compressors, pressurized tanks (both gas and liquid), vacuum pumps, vacuum tanks and vacuum equipment, oil and gas separators, and pressure relief systems.

Model Description:

ASME Section VIII, Air/Gas/Steam/Liquid, “UV” National Board Certified. Also available for vacuum service. PED Certified for non-hazardous gas.

  • 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 stainless steel (SS) trim (base, disc and disc holder).
  • Model 918: Same as Model 912 except resilient seat/seal. Superior “leak-free” performance. FM approved with 316 SS base for fire pump installations in “BDD” and “BDE” sizes.
  • Model 919: Same as Model 913 except resilient seat/seal. Superior “leak-free” performance. Bronze body and bonnet. 316 SS trim (base, disc and disc holder).

Features:

  • Available with soft seat.
  • Threaded cap is standard (back pressure tight).
  • Hex on valve nozzle provides for easy installation.
  • Warn ring offers easy adjustability.
  • 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.

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 such as cryogenic applications.
  • Oil/gas separators.
  • Overpressure relief and protection of pumps, tanks, lines and hydraulic systems.
  • By-pass relief or pressure regulation.

Pressure and Temperature Limits:

  • Model 912, 918: Steam
    • 3 to 250 PSIGPSIG [0.2 to 17.2 barg]
    • -320° to 406°F [-195° to 208°C]
  • Models 913, 919: Steam
    • 3 to 300 PSIGPSIG [0.2 to 20.7 barg]
    • -320° to 425°F [-195° to 219°C]
  • Models 912, 918: Air/Gas/Liquid
    • 3 to 300 PSIGPSIG [0.2 to 20.7 barg]
    • -320° to 406°F [-195° to 208°C]
  • Models 913, 919: Air/Gas/Liquid
    • 3 to 1400 PSIGPSIG [0.2 to 96.5 barg]
    • -320° to 425°F [-195° to 219°C]

Vacuum Limits:

  • 6″ to 29″ HG
  • [200 to 1000 mbarg] – 300°F[149°C]

Options:

  • Variation 01: Threaded cap
  • Variation 02: Threaded cap with gag.
  • Variation 03: Plain lever.
  • Variation 04: Plain lever with gag.
  • Variation 05: Plain lever with vibration dampener.
  • Variation 06: Packed lever.
  • Variation 07: Packed lever with gag.

Please refer to the Kunkle Catalog or Contact Us for additional information.