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Abutterfly valveis a quarter-turn rotational motion valve used for isolation or flow regulation. It is named for the way its internal closure member a metal disc mounted on a rotating shaft—moves like the wings of a butterfly as it opens and closes.

Category	Parameter	Specification
Size	MM	50mm to 1200mm
Type		Soft Seated / Double offset / Triple Offset / Metal Seated
Pressure Rating	Class	#150 / 300 / 600 / 900
End Connection		Wafer / Flanged / Double Flanged / LUG Type
MOC (Materials)	Body	CI / CS / SS-304 / SS-316 / Pl. Specify
	Internals (Trim)	Disc: SS-304 / SS-316 / Nylon Coated(NDI) / Pl. Specify
	Seat	EPDM / PTFE / Metal Seated / Pl. Specify
Manufacturing Standard		API 609
Testing Standard		API 598

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