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A butterfly valve is a valve that isolates or regulates the flow of a fluid. The closing mechanism is a disk that rotates.Operation is similar to that of a ball valves, which allows for quick shut off.
A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid.Â
| DESIGN | API 609/ BS 5155/ IS 13095 |
| TESTING | API 598/ BS EN 12266-1 |
| END CONNECTION | WAFER/ LUG/ DOUBLE FLANGE |
| MOC | CI/ WCB/ CF8/ CF8M/ CF 3/ CF 3M/ AL. BRONZE/ GRY IRON/ DUCTILE IRON |
| DISC | GRY IRON/ DUCTILE IRON/ WCB/ CF8/ CF8M/CF3/ CF3M |
| SEAT | NBR/ EPDM/ VITON/ SILICON/ NEOPRENE/ PTFE /HYPELON |
| SIZE | 40 MM TO 1200 MM |
| OPTIONS | • GEAR OPERATED • PNEUMATICALLY OPERATED • ELECTRICALLY OPERATED • EXTENDED STEM |