Kunkle Pressure Relief Valve Models 6010, 6021, 6030, 6121, 6130, 6182, 6186, 6221, 6230, 6283 Certified Valves

The 6000 series Kunkle valves are popular with air, gas and steam applications. Valve housing is a heavy duty casting. These bronze and stainless steel valves are used with steam boilers, steam generators, air compressors, gas compressors – both reciprocating and rotary, intercoolers and aftercoolers, pressurized steam autoclaves, pressurized steam sterilizers, and pressure reducing stations. Model variations allow for more customized applications.

Model Detail Descriptions:

ASME Section I and VIII, Steam, ‘V’ and ‘UV’, ASME Section VIII, Air/Gas ‘UV’ National Board Certified. Models 6933, 6934, and 6935 are ASME Section IV, ‘Steam’, ‘HV’ National Board Certified.

Model 6010: Side outlet. Full nozzle design with brass/bronze trim. Available with O-ring seats.
Model 6021: Same as Model 6010 with Teflon (PFA) disc insert. (use on steam only).
Model 6030: Same as Model 6010 except SS trim (nozzle and disc). Available with O-ring seats.
Model 6182: Top outlet. Full nozzle design with bronze/brass trim. Available with O-ring seats.
Model 6121: Same as Model 6182 with Teflon (PFA) disc insert.
Model 6130: Same as Model 6182 except SS trim (nozzle and disc). O-ring seat available.
Model 6186: Top outlet. Full nozzle design with bronze/brass trim. 150 psig maximum set pressure. Replaces Model 86 (original equipment only).
Model 6283: Side outlet. Full nozzle design bronze/brass trim.
Model 6221: Same as Model 6283 with Teflon (PFA) disc insert. (Use on steam only).
Model 6230: Same as Model 6283 except SS trim (nozzle and disc).
Model 6933: Same as Model 6010 except certified for ASME Section IV. Low pressure steam heating boilers set at 15 psig only.
Model 6934: Same as Model 6021 except certified for ASME Section IV. Low pressure steam heating boilers set at 15 psig only.
Model 6935: Same as Model 6030 except certified for ASME Section IV. Low pressure steam heating boilers set at 15 psig only.

Features:

O-ring seats available for exceptional leak-free performance, reduced maintenance cost, multiple cycles with tight shutoff, improved seating integrity.
Wide hex on valve nozzle provides wrenching service clearance for easy installation.
Dual control rings offer easy adjustability for precise opening with minimum preopen or simmer and exact blowdown control.
Ball bearing pivot between disc and spring corrects misalignment and compensates for spring side thrust.
Grooved piston model disc reduces sliding area and friction.

Pressure and Temperature Limits:

Models 6010, 6021, 6182, 6283, 6221
- Section I Steam 15 to 250 psig -60° to 406°F
- Non-code and Section VIII Steam, Air/Gas 3 to 250 psig -60° to 406°F
Models 6030, 6130, 6230
- Section I Steam 15 to 300 psig -60° to 425°F
- Non-code and Section VIII Steam, Air/Gas 3 to 250 psig -60° to 406°F

Applications:

Steam boilers and generators
Air/Gas compressors – reciprocating or rotary – portable or stationary, intercoolers and aftercoolers.
Pressure Vessels – containing steam, air or non-hazardous gas. Including tanks, receivers, sterilizers and autoclaves.
Pressure Reducing Stations – protection of the discharge or low pressure side of system

Options: