Kunkle Liquid Relief Valve Models 264, 264P, 265, 265P, 266, 266P, 267, 267P

Certified for Air, Gas and Steam applications, non-code for liquid, these valves are made with carbon steel, and stainless steel trim. Used to protect pumps, compressors, pressure vessels or for systems handling corrosive fluids or vapors at high pressure or temperature. Valve also serves as a warning (sentinel) on steam equipment. Ball bearing pivot between disc and spring corrects misalignment and compensates for spring side thrust.

Model Descriptions:

Non-Code Liquid Relief, ASME Section VIII, Air/Gas and Steam, National Board Certified Safety and Relief Valves.

  • Model 264: Carbon steel housing with 316 stainless steel (SS) trim (nozzle and disc), SS spring. Pressure-tight cap.
  • Model 264P: Same as model 264 with pressure-tight packed lift lever.
  • Model 265: Same as model 264 except high-temperature alloy spring (temperatures to 750°F [400°C]).
  • Model 265P: Same as model 265 with pressure-tight packed lift lever.
  • Model 266: Same as model 264 except 316 SS materials.
  • Model 266P: Same as model 266 with pressure-tight packed lift lever.
  • Model 267: Same as model 266 except high-temperature alloy spring (temperatures to 750°F [399°C]).
  • Model 267P: Same as model 267 with pressure-tight packed lift lever.

Features:

  • Top-guided design offers high capacity with 0.110 in² [ 0.710 cm²] orifice area.
  • Ball pivot between disc and spring corrects misalignment and compensates for spring side thrust.
  • Standard outlet with 1” female NPT.
  • Each Kunkle valve is tested and inspected for pressure setting and leakage.

Applications:

  • Protection of pumps, compressors, pressure vessels or systems handling corrosive fluids or vapors at high pressure and/or temperature.
  • Sentinel (warning) on steam equipment.

Pressure and Temperature Limits:

  • Model 264
    • 4 to 3300 PSIG [0.28 to 227 barg]
    • -20° to 550°F [-29° to 288°C]
  • Model 266
    • 4 to 3300 PSIG [0.28 to 227 barg]
    • -320° to 550°F [-195° to 288°C]
  • Model 265
    • 4 to 3300 PSIG [0.28 to 227 barg]
    • -20° to 750°F [-29° to 399°C]
  • Model 267
    • 4 to 3300 PSIG [0.28 to 227 barg]
    • -320° to 750°F [-195° to 316°C]

Note: Pressures listed are for female NPT inlets only. See chart on page 5 of the applicable Kunkle Catalog for male NPT.

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