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

Description

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

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    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.