... -welded butterfly valve, flange-weldedbutterfly valve, extended welded butterfly valve, pneumatic butterflyvalve 2) Ball valve: quick-installed ball valve, without resort ... valve, triplet diaphragm valve, U-typediaphragm valve5) Sample valves, stop reversing valves, forged stainless steel valves, and pipefittings6) Standard: AAA, DIN, SMS, IDF ...