... , CHEMICAL INDUSTRY, ARCHITECTURE, TEXTILE INDUSTRY, WATER CONSERVANCY AND OTHER INDUSTRIES. VALVES ARE WIDELY USED IN PETROLEUM, CHEMICAL INDUSTRY, ARCHITECTURE, TEXTILE INDUSTRY ... , WATER CONSERVANCY AND OTHER INDUSTRIES.VALVES:GATE VALVEBUTTERFLY VALVENON-RETURN VALVEFILTERDOUBLE AIR VALVESINGLE AIR VALVESTOP VALVEBALL ...