WHAT IS A HIGH PERFORMANCE OR DOUBLE OFFSET BUTTERFLY VALVE?

 High Performance Butterfly Valves use a disc offset from the seat center, hence the name Double Offset.


In this configuration, the disc is eccentric, or offset, from the valve seat. As the disc starts to rotate, it moves away from the seat instead of across it. This design actually uses the line pressure to help give it its seal. This feature allows the use of offset butterfly valves in high‐pressure applications such as ethanol or HVAC. It generally uses PTFE or plastic as its seat material, but metal seats are also available to meet fire‐testing specifications like API 607.



Offset Disc Butterfly Valves are comprised of the following components:

Body

Retainer Plate

Seat

Disc

Stem

Stem Seals

Standard double offset butterfly valves come with a polymer seat, usually PTFE, with a metal backup for fire safety. Metal‐to‐metal seats are also available and may provide a higher sealing quality, and allow slightly higher temperatures.


FEIDA VALVE is the top ranking China double offset butterfly valve manufacture. The annual output of high performance butterfly valve is more than 100,000,000 set.


The API 607 fire safe high performance butterfly valve is also in FEIDA VALVE product range. Our fire safe butterfly valve is certificated by American Petroleum Institute (API) according to API 607 standards.


FEIDA VALVEalso build up a dustless workshop to produce ultra-clean valve for some critical working condition such as nuclear industry, semiconductor industry etc.


In the dustless workshop, FEIDA also produce the food-grade valves. FEIDA food-grade valve is certificated by Food and Drug Administration United States (FDA).


If you are interested in valves, you can contact us directly, email:ethan@feidavalve.com



Varyity type of FEIDA High Performance Butterfly Valve:


ENDs：

high performance butterfly valve lug

high performance butterfly valve semi lug

high performance butterfly valve wafer

high performance butterfly valve flange

high performance butterfly valve fire safe


Pressure：

high performance butterfly valve Class 150

high performance butterfly valve Class 300

high performance butterfly valve Class 600


Operation：

punamtic high performance butterfly valve

electrical high performance butterfly valve


Material：

carbon steel high performance butterfly valve

stainless steel high performance butterfly valve

c95800 high performance butterfly valve

Nickel aluminum bronze high performance butterfly valve

Hastelloy high performance butterfly valve

2205 high performance butterfly valve


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