... 34, BS1868.Bolted Bonnet, Swing Type Disc,Threaded or Welded Seat Ring.Back-seating, Renewable Seat Ring.Full Port Or Reduced Bore.Size Range: 2" to ... : Flanged, Buttweld, Socket Weld, Hub Connectors, Compact Flange or other proprietary connections. .Materials Available in: WCB,LCB,CF8, ... CF8M,CF3,CF3M,WC6,WC9, C5,C12 or Equivalent, Available also in low temperature steels, low alloy ...