A butterfly valve consists of a circular rotating plate that is hinged at it semicircular ends attached inside of the valve that opens and closes to regulate the flow of liquid in the pipe. It is a type of quarter turn valve as it is in the full open condition when the plate rotates only at a quarter angles. We are manufacturer of the Butterfly Valves in various types of operating system like control type lever, manual gear, pneumatic and electric actuators. Our Butterfly Valves are highly popular in the market for the high efficiency in their performance. We are famous for providing small in size and strong body valves. They are usually less in cost when compared to other large size valves.
|Size||DN 50 to DN 900 (NPS 2 to NPS 36)|
|Construction Material||Martensitic Steel WC1, WC6, WC9, C5, C12, CA15, etc. Cast Carbon Steel WCB, WCC, etc. Duplex Stainless Steel CD4MCuN, CD3Mn, etc. Low Carbon Steel LCB, LCC, etc. Austenitic Stainless Steel CF8, CF8M, CF3, CF3M, CN7M, CG3M, etc. Ductile Iron Grey Cast Iron, S.G. Iron, etc.|
|Design & Manufacturing Standard||BS 5155, API 609, AWWA C504|
|Pressure Rating||Class 150 & PN 10 / PN 16|
|Bore Type||Standard (Fully Bore)|
|Testing Standard||API 598|
|Face to Face Standard||BS 5155, API 609, AWWA C504|
|Seat Design||Soft Seated as like, PTFE, RPTFE, EPDM, Nitrile, Viton, etc.|
|End Connection Standard||BS 5155, API 609, AWWA C504, ASME B16.5 & ASME B16.10|
|End Connection Type||Centre Disc, Offset Disc, Double Offset Disc, Triple Offset Disc|
|Operated Type||Hand Lever, Gear, Pneumatic Actuator, Bare Shaft, etc.|
The most basic type of butterfly valve is the concentric Butterfly Valve also known as a resilient seated butterfly valve. In this valve the fluid is centered to the middle part of the bore of the pipe. There is a rubber seat which relies on the main disc of the valve that has a high level of contact between the seat and pipe giving a complete tight seal. In this concentric butterfly valve the disc comes in contact with the seat even before completing the 90 degree rotation.
The offset butterfly valve is specially designed to withstand the high pressure faced in the petroleum and power industries. This offset type disc butterfly valve is further divided into two types: Double offset disc butterfly valve and triple offset butterfly valve.
Double Offset Disc Butterfly Valve: In this valve there are two stem offsets preset from the center part. The first offset is at the axis of the shaft behind the centerline of the disc to the seat and the second one is eccentric to the center of the pipe. This kind of butterfly valve is majorly used in the industries like chemical, oil and gas, power plants, treatment plants, etc.
Triple Offset Butterfly Valve:This variety of triple offset butterfly valve is specially designed to provide reliable and consistent performance even in hash conditions and temperature. They are made to handle high pressure steam, high temperature gases, fluids like oils, etc. as we provide a metal seat above the soft seat to protect it.