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.
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Cast Steel / Forged Steel Carbon Steel.
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50mm to 700mm
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Socket weld, butt weld, flanged*
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140PSI
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150#
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Manual (including the type with a manual reduction gear), electric
Butterfly Valve OS and Y
| # | First | Last | Handle |
|---|---|---|---|
| 1 | BODY | ASTM A 216 Gr. WCB | 1 |
| 2 | BONNET | ASTM A 216 Gr. WCB | 1 |
| 3 | BONNER FLANGE | ASTM A 216 Gr. WCB | 1 |
| 4 | STEM | AISI 304/AISI 410 | 1 |
| 5 | PLUG | AISI 304/AISI 410 | 1 |
| 6 | SEAT RING | AISI 304/AISI 410 | 2 |
| 7 | GLAND BUSH | AISI 304/AISI 410 | 1 |
| 8 | GLAND PLATE | M.S. | 1 |
| 9 | BONNET STUD & NUT | ASTM A 193 Gr. B7 ASTM A 194 Gr. 2D |
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| 10 | ACTUATOR | ALUMINIUM / MS | 1 |
| 11 | GLAND PACKING | METALIC WIRE REIN D GRAPHITED ASBESTOS | 1 |
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