Models 6010, 6021, 6030, 6182, 6121, 6130, 6186, 6283, 6221, 6230, 6933, 6934, 6935 Air/Gas/Steam Relief Valves

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 Descriptions

• 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.

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
Optional O-Ring Soft Seat Where Indicated

Features and Benefits

• 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 pre open 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.