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Category:

Butterfly Valve

Manual Butterfly Valve

Keyword：

Manual Three Eccentric Butterfly Valve

Three eccentric metal seal butterfly valve, using the shaft center double deviation valve structure center combined with the sealing surface asymmetric design, so that the valve plate in the full range of 0-90° are not friction with the valve seat, eliminating the rotary control valve due to friction caused by the sealing surface wear and friction.

Standard
Design standard	ANSI/API, JIS, DIN, BS, ASME, GB/T, EN, GOST, MSS SP, etc
Wall thickness standard	ANSI/ASME B16.34, JIS B 2071, DIN 3202, BS EN 593, GB/T 12238, EN 558-1, GOST 5632, MSS SP-67, etc
Thread standard	ANSI/ASME B1.20.1, JIS B 0203, DIN 2999, BS 21, GB/T 7306, EN 10226-2, GOST 6357, MSS SP-9, etc

Technical data
Pressure range	PN16~PN100, ANSI 150lb~ANSI 600lb
Size range	DN50 (2”)~DN1200 (48”)
Face to face	API 609, JIS B 2064, DIN 3202-K1, BS EN 558-1, GB/T 12221, EN 558-1, GOST 3706, MSS SP-67, etc
Flanged/wafer ends	ANSI/ASME B16.5, JIS B 2212/2213, DIN 2501, BS EN 1092-1, GB/T 9113, EN 1092-1, GOST 12815, MSS SP-44, etc
Temperature range	196℃~583℃
Adjustable ratio	30:1

Valve material
Body material	ASTM A216 WCB/WCC ASTM A27 WC6/WC9, ASTM A351 CF8/CF3/CF8M/CF3M, etc
Disk material	ASTM A216 WCB/WCC ASTM A27 WC6/WC9, ASTM A351 CF8/CF3/CF8M/CF3M, etc
Trim material	304, 316, 316L, 2205, 2507, 2Cr13, 4Cr13, F11, F22, etc
Seat material	304, 316, 316L, 410, 20, 17-4PH, Monel, Hastelloy, etc
Stem material	304, 316, 316L, 420, 17-4PH, etc

Design feature
Body type	straight-through
Body shell strength	ASME B16.34, GB/T 9092, GB/T 13927, API 598
Valve shaft seal form	self-sealing stuffing box structure flexible graphite packing
Seat structure	multi-layer
Flow characteristics	approximate equal percentage

Inspection and test
Leakage rating	API 598, JIS B 2003, DIN EN 12266-1, BS EN 12266-1, GB/T 13927, EN 12266-1, GOST 9544, MSS SP-61, etc
Inspection and testing standard	API 598, JIS B 2003, DIN EN 12266-1, BS EN 12266-1, GB/T 13927, EN 12266-1, GOST 9544, MSS SP-61, etc