Detailed Product Description Product Description Cast Steel Plug Valves Standard compliance: 1) Design and manufacture: API6D, ANSI ... 150LB to 2500LB 3) Type: Lubricated taper plug valve, inverted pressure balance lubricated plug valve(venturi pattern, regular pattern), sleeve type ... soft sealing plug valve 4) Material: WCB, WCC, WC6, WC9, C5, C12, CF8 ...