Models 912, 913, 918, 919 Steam/Air/Gas/Liquid Relief Valves

ASME Section VIII, Steam/Air/Gas/Liquid, ‘UV’ National Board Certified. Also available for Vacuum Service.

Model Descriptions

• 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 SS trim (base, disc and disc holder).
• Model 918: Same as Model 912 except resilient seat/seal. Superior ‘leak-free’ performance.
• Model 919: Same as Model 913 except resilient seat/seals. Superior ‘leak-free’ performance. Bronze body and bonnet. 316 SS trim (base, disc and disc holder).

Pressure and Temperature Limits

• Models 912, 913, 918, 919 – Steam 3 to 250 psig -60° to 406°F
• Models 912, 918 – Air/Gas/Liquid 3 to 300 psig -60° to 406°F
• Models 913, 919 – Air/Gas/Liquid 3 to 900 psig -60° to 406°F
• Vacuum 6 through 29-inch HG – 300°F
• Maximum back pressure 50 psig – threaded cap and packed lever.

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

Options

• Threaded cap
• Threaded cap with gag
• Plain lever
• Plain lever with gag
• Plain lever with vibration dampener
• Packed lever
• Packed lever
• Packed lever with gag

Features and Benefits

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