Mueller Steam Specialty Datasheets for Butterfly Valves

Butterfly valves control flow through a circular disc or vane by turning the valve's pivot axis at right angles to the direction of flow in the pipe. They are normally used as throttling valves to control flow.
Butterfly Valves: Learn more

Product Name Notes
Grooved End Butterfly Valves -- 89-GEN
Consist of a ductile iron body, BUNA-N or EPDM encapsulated ductile iron disc and a 431 stainless steel two-piece stem. Pressure rated to 175psi CWP. Grooved end designed to ANSI/AWWA...
Iron Full Lug Butterfly Valves Large -- 88
Iron Full Lug Butterfly Valves Small -- 88
Iron Wafer Butterfly Valves Large -- 87
Iron Wafer Butterfly Valves Small -- 87
These soft-seated butterfly valves are designed for a variety of general applications in the control of water, air, oil, gases, and corrosive media. They are equally effective for on-off, throttling,...
Full Lug Butterfly Valves -- 52
Full Lug Butterfly Valves -- 52M
Semi-Lug Butterfly Valves -- 53
Steel Full Flange Butterfly Valves -- 58
Wafer Butterfly Valves -- 51
Wafer Butterfly Valves -- 51M
These soft-seated butterfly valves are designed for a variety of general applications in the control of water, steam, air, oil, and gases. They are equally effective for on-off, throttling, isolation,...