Double offset high performance butterfly valve has ultra unique product strcture, ultra relable sealing performancem, ultra wide working conditions, ultra low operating torque and ultra long service life, it is safe and fireproof under speical working condistions, staying at the leading postiion among other similar productis in the world, it provides a bi-directional bubble tight shou-off, this geometry ensure than disc seal contacts body seat only at the final shut-off postion without rubbing or galling, providing a torque generated resilient seal with sufficient wedging to ensure auniform seal contact.
Double offset high performance butterfly valve uses various structrue materials which can meet NACE and anticorrosive requirement, special desigh valves can be used in chlorine, oxygen, high vacuum, corrosive medium and cryogenic condition are available.
Fire safe type valve is subjected to fire test according to API607.
Special working conditions for this series valves:
- Steam working condition;
- Oxygen working condition;
- Vacumm working condition;
- High service long life condition.
Size: NPS 2″~60″
Rating: 150LB~300LB
End type: Wafer, Flange, Lug
Material: Carbon Steel, Stainless Steel, other material according to requirement
Standard:
- Design and manufacture: API607, MSS SP-25/44/55/61/69, ANSI B31.3/31.8
- Inspection and test: API598
- End connectin: ASME B16.5, ASME B16.47, ASME B16.25 BW
- End to end: API609, ANSI B16.10
- Pressure-temperature rating: ASME B16.34
