Models 264, 264P, 265, 265P, 266, 266P, 267, 267P

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 for additional information.