Double Offset Disc Butterfly Valve Wafer Type
Double Offset Disc Butterfly Valve Wafer Type
Product Name: Double Offset Disc Butterfly Valve Wafer Type
Body: ASTM A 216 Gr. WCB / CF8 / CF8M
Disc: WCB / CF8 / CF8M
Seat: PTFE/ Graphite
End Connection : Wafer Type Suit to ANSI B 16.5 (150# / 300#)
Pressure: PN 10 / PN 20
Temperature: Upto 90°C
Description
A wafer-style butterfly valve is the most economical version and it is sandwiched between two pipe flanges. This valve may or may not have flange holes outside of the valve body as seen in The pipe flanges are connected through long bolts that cross the entire valve body, as seen in The sealing between the valve and pipe flanges is accomplished via gaskets, O-rings, and flat valve faces on both sides of the valve. This type of connection is designed for sealing against bi-directional differential pressures and to prevent backflow in systems designed for universal flow.