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About Butterfly Valves
Butterfly valves are quick opening valves that consist of a metal circular disc or vane with its pivot axes at right angles to the direction of flow in the pipe, which when rotated on a shaft, seals against seats in the valve body. They are normally used as throttling valves to control flow. Butterfly valves control the flow of gas or liquid by means of a disk, which turns on a diametrical axis inside a pipe or by two semicircular plates hinged on a common spindle, which permits flow in only one direction. These valves offer a rotary stem movement of 90 degrees or less, in a compact design. Unlike ball valves, butterfly valves do not have any pockets in which fluids may become trapped when the valve is closed.
Butterfly valves are available in several body styles and seal types. The flange type or lug style can be held between flanges of any type. Wafer valves are installed between two flanges using bolts or nuts and studs, while lug style valves have metal inserts installed in the valve's bolt holes and the valve is installed between two flanges using a separate set of bolts for each flange. If the wafer style is used, avoid placing it between either slip-on or screwed flange types. Some wafer body styles will not form a proper seal. The wafer style is used more commonly and is cheaper than the lug style.
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Butterfly Valves
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Types of Butterfly Valves
Wafer style is the more common of the two and is less expensive than the lug style. The wafer style butterfly valve is just about the standard. It Ãs so common that no one even bothers to use the...(read more)
Engineering Web: Butterfly Valves
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Butterfly Valves by Asahi ? America Valves Ball Valves Butterfly Valves Type 55 Butterfly Options Plasgear Diaphragm Valves See Asahi/America, Inc. Profile & Catalog |
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CRANE Energy Flow Solutions: Welcome to Jenkins Valves today offers a complete range of Commercial Bronze, Iron, Cast Steel multi-turn and swing check valves along with our brass and bronze |
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Ball Valves & Butterfly Valves - Ball Valve Types Include... Triad Valves Established since 1990, Triad Process Equipment See Triad Process Equipment, Inc. Information |
Part Numbers for Butterfly Valves
| Part # | Distributor | Manufacturer | Product Category | Description |
|---|---|---|---|---|
| 1JBJ2 | Grainger Industrial Supply | MILWAUKEE VALVE CO | Butterfly Valves | Butterfly Valve,Lug,6 In,CI,Buna Liner |
| 1JBJ4 | Grainger Industrial Supply | MILWAUKEE VALVE CO | Butterfly Valves | Butterfly Valve,Lug,8 In,CI,Buna Liner |
| 1JBJ8 | Grainger Industrial Supply | MILWAUKEE VALVE CO | Butterfly Valves | Butterfly Valve,Lug,8 In,CI,Buna,Gear |
| 1JBK7 | Grainger Industrial Supply | MILWAUKEE VALVE CO | Butterfly Valves | Butterfly Valve,Wafer,4 In,CI,Buna Liner |
| 1JBK9 | Grainger Industrial Supply | MILWAUKEE VALVE CO | Butterfly Valves | Butterfly Valve,Wafer,5 In,CI,Buna Liner |
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