Butterfly Valve

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. The valve may also be opened incrementally to throttle flow.

Types of Butterfly Valve

Based on the type of ends of the body butterfly valves are available in following types

Flange Type
Lug Type
Wafer Type
Butt Weld Type

Specification of Butterfly Valve

Size : DN50 - DN1200 (2" - 48")
Class : PN-10, PN-16, ANSI 150 to ANSI 2500 JIS 10K, JIS 16K, JIS20K
Flange, Wafer, Lug or BW
Triple Offset or Concentric Lining Type
Cast IronCast BronzeTitanium
Carbon SteelStainless SteelAluminium
Ductile IronDuplex Stainless SteelPVC
Water treatment and distributionPaper and pulp industry
Chemical industryShipbuilding
Petrochemical plantsGas distribution
Power/ Hydro electrical/ Nuclear plantsGeneral services

Brand of Butterfly Valve