Aluminum bronze butterfly valve
D41X flange butterfly valve
D71F four fluorine wafer butterfly
D71X (DN25-32) aluminum alloy butterfly valve without pin
D71X (DN25-32) stainless steel butterfly valves
D341X stainless steel flange butterfly valve
D341X U flange butterfly valve
D341X worm wheel flange butterfly valve
D343H hard sealing flange butterfly valve
D343X double eccentric flanged butterfly valve
