This video is about the process of PTFE Coated LUG Butterfly Valve Assembly. PTFE Coated LUG Butterfly Valve is one of Tianjin Worlds Valve’s representative products. Tianjin Worlds Valve Co.,Ltd is a specialized manufacture enterprise that focuses producing, installing, sale and service. The main products include Butterfly Valve, Flanged Butterfly Valve, Check Valve, Gate Valve.