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DELCO DSC991/DSC981 Inverted Bucket Steam Trap, Flanged PN16 (as cast), DN15–DN50 Options
DELCO DSC991/DSC981 inverted bucket steam trap is a mechanical steam trap designed for steam mains, drip legs, and general industrial steam equipment drainage, using an inverted-bucket mechanism to discharge condensate intermittently while maintaining a water seal to help prevent live steam loss. It is built for rugged service and can handle challenging conditions such as water hammer, and it supports continuous air venting at steam temperature through a small vent hole design concept common to inverted bucket traps.
Size Range: DN15-DN500
Material: WCB, Stainless Steel etc.
Flange Standard: GB / ANSI /DIN /JIS etc.
Features
Rugged inverted-bucket design with water-seal anti-steam-loss concept—ideal for tough steam drainage duty.
✅Water-seal steam saving concept: The discharge orifice is surrounded by a water seal to help prevent live steam loss during operation.
✅Continuous air venting at steam temperature: A small vent hole design provides continuous automatic venting of air/CO2 at steam temperature, which is a typical feature of inverted-bucket traps.
✅Anti-dirt, top-mounted mechanism: With the mechanism and discharge orifice located at the top, dirt is less likely to collect on the seat, improving reliability in real piping conditions.
✅Water-hammer resistant: Inverted bucket traps are widely used in demanding steam systems and are commonly valued for water hammer resistance.
✅Fits key steam stations naturally: Commonly applied on drip legs downstream of a (steam pressure reducing valve) station and on steam headers protected by a (safety valve), supporting safer and more stable condensate drainage.
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Key Application Fields
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Oil & Gas
DELCO API-certified valves ensuring safety and reliability in demanding high-pressure pipelines. -
Chemical & Petrochemical
DELCO corrosion-resistant solutions tailored for handling aggressive acids and hazardous fluids safely. -
Power Generation
DELCO solutions efficiently withstand extreme high-temperature and high-pressure steam cycles in power plants. -
Food & Pharmaceutical
DELCO sanitary valves with FDA-compliant, crevice-free designs to ensure absolute product purity. -
Water & Wastewater
Durable municipal solutions by DELCO, designed for zero leakage and long-term sustainability. -
HVAC & District Heating
DELCO valves ensure precise flow regulation to optimize energy efficiency in modern buildings.
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