The valve body of the cast steel WCB lined PTFE rising stem flange gate valve is made of carbon steel casting, and PFA, FEP, PTFE can be used as lining materials internally to isolate corrosive media in the pipeline from local contact with the metal valve. The valve opening is controlled by a handwheel switch, and the design of the rising stem allows the open and closed status of the valve to be visible to the naked eye. The valve is open when the stem rises and closed when the stem falls.
