... , MSS67-1995, DIN3202K1. 4.TST , Brand production. Name : Wafer type butterfly valves / centerline butterfly valve / Valves / Butterfly valves. Company profile : Tianshun Valve was founded in 1993 , with ... , electronic apparatus ), Fire-proof butterfly valve .2. Lug type butterfly valve , Double disc Check valve , Grooved end butterfly valve , Industry butterfly valve , Non rising stem single ...