Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering Resilient Seated (Soft Sleeve) -Heavy Duty-Lug Type Butterfly Valve DN350, Resilient Seated (Soft Sleeve) -Lug Type Butterfly Valve DN50, DN100 Resilient Seated (Soft Sleeve) -Lug Type Butterfly Valve -Aobv02 Pn10&Pn16 and so on.