Introduction
The API 6D Swing Check Valve is a swing-type check valve that meets API 6D standards. Forward flow pushes the disc open, and it closes against the seat by gravity or spring when flow stops or reverses, ensuring reliable backflow prevention.
Parameter

Model: PHB100 OR EOM
Size: Class 150-600≤30", Class900-1500 ≤24", Class2500≤12"
Bolted Bonnet
Swing Type Disc
Renewable Seat Rings Welded or Threaded
Flanged Ends or Buttwelding Ends
API 6D Bore, Piggable
Metal Seat &Soft Seat Seal
Basic Design: API 6D
Face to Face: API6D
End Flange:2"-24"ASME B16.5 26"-30"ASME B16.47
B.W. End: ASME B16.25
Test and Inspection: API 6D
Manufacturing to NACE MR0175 on request

Features
Swing-Type Disc
Low flow resistance automatically prevents backflow, protecting the pump and pipeline system.
Renewable Seat Rings (Welded or Threaded)
Welded seat rings provide durable, high-pressure sealing, while threaded seat rings allow easy replacement.
API 6D Bore, Piggable
Complies with pigging requirements, ensuring unobstructed fluid flow in long-distance pipelines.
Metal and Soft Seat Seals
Metal valve seats withstand high temperature and pressure, while soft seals enhance sealing performance.
FAQ
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