General API DBB Plug Valve  

DBB plug valve called double block-and-bleed plug valves which is high-integrity, positive shut-off valves,which serves the pipeline, liquid bulk terminals, aviation furling, refining, oil and gas production and custody transfer for the petroleum and oil and gas industries.  DBB plug valve redice the constant wear by using 2 seat slips mounted independently on a tapered plug by dovetails, which mechanically retract from the seat surface piior to rotating. Valve material covers carbon steel, stainless steel, alloy steel, duplex steel, such as WCB, WC6, WC9, CF8, CF8M, 4A, 5A, aluminium bronze etc.