A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start flow. It is very easy and fast to operate. Butterfly valves are especially well-suited for the handling of large flows of liquids or gases at relatively low pressures and for slurries or liquids with large amounts of suspended solids. A 90° rotation of the handle provides a complete closure or opening of the valve. Bigger size Butterfly valves are usually operated with gearbox, where the handwheel by gears is connected to the stem, which simplifies the operation of the valve.
Size: 1½″ up to 42″ (DN 15 up to DN 1050)
Pressure Rating (Class): ASME 150# to 300#, PN10, PN16, PN25, PN40
Materials: Carbon Steels, Low Temperature Carbon Steel, Martensitic Steels, Austenitic Stainless Steel, Duplex Stainless Steels, Super Duplex Stainless Steels, Nickel Alloys, Nickel Aluminium Bronze.
Sealing: EPDM / Nitrile / PTFE / Rubber Lined & Metal to Metal and Metal to Soft Seat
Design Standard: API 609, EN593 (BS 5155), ISO5752, MSS SP67