A butterfly valve, abbreviated as BTFLV, is a quarter turn valve (90° or less) with a circular disk as its closing element.  The standard design has the valve stem running through the disk, giving a symmetrical appearance.  Other designs offset the stem.  Advantages include less wear and tear on the disk and seats, and tighter shut-off capabilities.  When space is limited, sometimes larger valves may use a hand wheel with a gear arrangement.  Butterfly valves are rather easy to maintain.  These valves are used for gases, liquids, slurries, powders, and vacuum.

There are two butterfly valve categories:

Category A: Manufacturer's rated cold working pressure (CWP) butterfly valves, usually with a concentric disc and seat configuration.  Sizes covered are NPS 2 to NPS 48 for valves having ASME Class 125 or Class 150 flange bolting patterns.

Category B: Pressure-temperature rated butterfly valves that have an offset seat and either an eccentric or a concentric disc configuration.  These valves may have a seat rating less than the body rating.  Sizes covered are NPS 3 to NPS 24 for Classes 150, 300, and 600.

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 VALVE also 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

lug double offset butterfly valve

semi lug double offset butterfly valve

wafer double offset butterfly valve

flange double offset butterfly valve

Function：

Fire safe high performance butterfly valve / double offset butterfly valve

PSA high performance butterfly valve / double offset butterfly valve

VPSA high performance butterfly valve / double offset butterfly valve

Food grade high performance butterfly valve / double offset butterfly valve

Air separation high performance butterfly valve / double offset butterfly valve

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

duplex stainless steel high performance butterfly valve