Pneumatic Lined PTFE Flanged Ball Valve 

Chemical plant fluid project contractors, waste water treatment equipment suppliers and fine chemical workshop maintenance engineers across Southeast Asia, Middle East and Europe always face severe corrosion troubles when handling strong acid, strong alkali and corrosive solvent pipelines. Ordinary carbon steel or stainless steel ball valves will be corroded and perforated quickly after contacting hydrochloric acid, sulfuric acid, caustic soda and chlorine-containing medium, leading to frequent valve replacement, medium leakage risk and long factory shutdown losses.This pneumatic PTFE lined flanged ball valve solves all anti-corrosion pain points for corrosive medium pipelines. Clients who install this Q641F46 model on chemical acid-base reaction pipelines, waste acid recycling trunk lines, electroplating wastewater treatment skids and pesticide raw material delivery mains share on-site operation experience. The entire inner cavity of valve body is fully lined with thick PTFE (F4/F46) fluorine plastic, isolating corrosive medium completely from metal shell, no chemical reaction or corrosion penetration happens even under long-term continuous contact with strong corrosive fluid. The aluminum pneumatic actuator delivers fast stable 90° automatic switching, perfectly matching factory PLC automatic control system for unattended chemical workshop pipeline operation. Multiple shell material options including HT250 cast iron, WCB carbon steel and CF8/CF8M stainless steel are available to match different project budget and medium temperature demands, all lined fluorine layers pass strict adhesion and anti-permeability testing before factory delivery.

This fluorine lined pneumatic flanged ball valve strictly follows unified chemical anti-corrosion valve industry standards recognized by third-party testing institutions and global export customs authorities, all specifications meet overseas chemical EPC project acceptance requirements: • Design & Manufacturing Standard: HG/T3704, GB/T12237 • Valve Face-to-Face Structural Length Standard: HG/T3704, GB/T12221 • Flange Connection Dimension Standard: HG/T20592, GB/T9113 • Pressure Test Inspection Standard: GB/T13927 • Actuator Mount Standard: ISO5211Our factory owns integrated production lines including metal casting, fluorine plastic lining hot pressing, CNC machining, aluminum actuator assembly and hydrostatic tightness testing. Every finished lined ball valve completes shell strength test, bidirectional sealing test and lining adhesion inspection before shipment. Complete material mill test certificates, lining performance test reports and full dimension drawings can be supplied for overseas chemical factory tendering and cross-border customs clearance filing.