Worm gear transmission worm switch American standard fixed ball flange ball valve ANSI ASME Class600LB is a ball valve with a two-stage transmission switch through a worm gear gearbox. The flange adopts American standard CLASS600 size, and the valve core structure adopts a fixed ball form. The valve seat can be selected from PTFE tetrafluoroethylene, PEEK, metal hard seal valve seat, etc. The valve body material can be WCB cast steel, A105 forged steel, or cast forged stainless steel such as F304, F316, etc.
