Double Flanged Rubber Lined Powder Butterfly Valve China factory with high quality
What's flange butterfly valves
Flange Butterfly Valve is type of resilient seated butterfly valves,with integral flanges cast on both ends.
NORTECH Flange Butterfly Valve is designed with long face to face,according to EN558-1 series 13. it can be used in many general applications such as in water distribution, water treatment, dams, power plants and in many other. The valve can be used as a stopper, a tap for discharging at the end of the pipeline, open/close and flow control.
for large size pipeline,double flange butterfly valves are wided used.
same as all the other butterfly valves,it's a quarter-turn valve that rotates 90 degrees to open or close the media flow. It has a circular disc, also known as the butterfly, found at the center of the body that functions as the closing mechanism of the valve. The disc is connected to an actuator or handle through the shaft, which goes through from the disc to the top of the valve body.
Butterfly valve is also used as flow regulalting valve,if the disc does not rotate to a full quarter-turn, it means the valve is partially open,we can regulate the flow of fluids by various openning angle.
(CV/KV chart of resilient seated butterfly valve is available on request)
Main features of Double flange butterfly valves
Double Flange Butterfly Valve design features of pinless disc
WHY TO CHOOSE US?
- Quality and service:more than 20 years of experiences of OEM/ODM services for leading european valve companies.
- Quick delivery,ready for shipment 1-4 weeks,with considerate stock of resilient seated butterfly valves and components
- Quality guarantee 12- 24 months for resilient seated butterfly valves
- Quality control for each piece of butterfly valve
Main features of Flange Butterfly Valve
- Low operating torques results in easy operation and economical actuator selection.
- PTFE lined bearings are designed for anti-friction and wear,no lubrication is required.
- Compact construction results in low weight, less space in storage and installation.
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- Centric shaft position,100% bi-directional bubble tightness,which makes installation acceptable at any direction.
- ISO 5211 top flange is convinient for easy automation and retrofitting of actuator.
- Full bore body gives low resistance to flow.
- No cavities in the flow passage,which makes it easy to clean and disinfect for potable water system etc.
- Rubber lined internally in the body makes fluid not to contact the body.
- Painless disc design is helpful to prevent the leakage point on the disc.
please refer to our catalogue of butterfly valves for details or contact our sales team directly.
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Design and Manufacture standard:API609/EN593
Face to face:ISO5752/EN558-1 series 13
Flange end EN1092-2 PN10/PN16/PN25,ANSI 125/150
DN 50mm-1200mm
Body:Ductile iron/carbon steel/stainless steel/Alu-bronze
Disc:Ductile iron/carbon steel/stainless steel/Alu-bronze
Seat:EPDM/NBR/FKM/Silicone
Pinless design
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Types of Operation for Wafer Butterfly Valve
Handle lever |
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Manual gearbox |
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Pneumatic actautor |
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Electric actuator |
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Free stem ISO5211 mouting pad |
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Technical specification of flange butterfly valve
Main parts materials of flange Butterfly Valve:
Parts | Materials |
Body | Ductile iron,carbon steel,stainless steel,duplex stainless steel,Monel,Alu-bronze |
Disc | Ductile iron nickel coated,ductile iron nylon coated/Alu-bronze/stainless steel/duplex/Monel/Hasterlloy |
Liner | EPDM/NBR/FPM/PTFE/Hypalon |
Stem | Stainless steel/Monel/Duplex |
Bushing | PTFE |
Bolts | Stainless steel |
Products shows
Product Application:
Where is the flange butterfly valves used?
Flange butterfly valves,same as all the other resilient seated butterfly valve,is widely used in
- Water and waste effluent treatment plants
- Paper, textiles and sugar industry
- Construction industry, and drilling production
- Heating, air conditioning, and cooling water circulation
- Pneumatic conveyors, and vacuum applications
The resilient seated butterfly valves are certified with WRAS in UK and ACS in France,specially for the waterworks.