Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering Resilient Seated (Vulcanized Sleeve) -U Type Butterfly Valve, a Double Flanged Valve in Short Construction "U" Designed Resilient Seated (Vulcanized Sleeve) -U Type Butterfly Valve, ISO 5211 Double Flanged Valve in Short Construction "U" and so on.