Similar to a swing check valve, full opening check valve is a valve can open all the way through the bore diameter. Full opening check valves are supposed to be installed horizontally too. Clearance between body and disc is very small for these valves compared to the regular swing check valve. The full-opening design can be capable for pig ball cleaning services, in accordance with API6D, full open check valves are ideal for crude oil and gas transportation to avoid the reverse flow.

PERFECT is a fully stocked manufacturer and supplier of the full opening check valve and we make the valve easy to find for your need.  We provide a complete line of the metal seat and soft seal full opening check valve for sale that is supplied to various industries, available pressure class including ANSI 150, ANSI 300, ANSI 600, ANSI 900, ANSI 1500 and ANSI 2500. We also offer various grades of materials for your different application choices and also accept the customized design, so whether you need special valves or material to choose, we can provide you with a customized service for you. Please review the charts below for available sizes & pressure & material or fill the contact form below.

  • Swing disc design is ideal  for installing in horizontal pipelines ;
  • Easy maintenance  and low initial and ongoing costs;
  • Functional qualifications per ratings in accordance with ASME Section III;
  • Greater process control through available dual seat disc design for leak-free sealing at both high- and low-pressure differentials;
  • The reliable performance enabled by a design of renewable and internal seat rings that ensures tight sealing.

Full Opening Check Valve Design


Non-Return Flow
Design Standard
  • API 6D
  • ANSI B16.34
F to F Standard ASME B16.10/ API 6D
Testing Standard
  • API 598
  • API 6D
End Connection Standard ASME B16.5
  • NPS 2 1/2 to 24
  • DN 65 to 600
Pressure Class Range
  • 150 to 1500
  • PN 25 to 260
  • Flanged End
  • Butt Weld End(ANSI 16.25)


  • Body: ASTM A216 Gr.WCB, ASTM A352 LCB, LCC, A217WC9, C5, A351 CF8M,CF3, CF3M,CN7M
  • Disc: 13% Cr, 18%Cr8%Ni, Stellite, Monel Alloy20, Bronze, etc
  • Seat: EPDM, Nitrile, PEEK, PTFE, etc

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