Description
PTFE Lined Plug Valve Manufacturer & Exporter in India
FlowBiz PTFE/PFA Lined Plug Valves are heavy-duty, corrosion-resistant shut-off valves engineered specifically for handling aggressive chemicals, toxic media, and concentrated acids where standard metallic valves fail. By locking a thick, seamless layer of fluoropolymer (PTFE/PFA) into the inner body cavity and around the tapered plug, this valve ensures total isolation between the liquid process line and metal components, preventing structural corrosion and zero media contamination.
Core Corrosion Protection & Mechanical Features
- Dovetail Mechanical Locking: PFA/PTFE linings are mechanically anchored to the cast iron or steel body via precision dovetail grooves, preventing liner collapse or vacuum displacement under high-temperature cycling.
- Non-Lubricated Bubble-Tight Sealing: The precision-ground tapered plug sits tightly inside the PTFE lined body sleeve, providing 360° circumferential seal without needing internal lubrication or maintenance grease.
- Self-Wiping Plug Geometry: Rotating action wipes clean viscous deposits and crystallized particulates from the lining, ensuring long-term seat integrity in slurry and scale-forming media.
- In-Line Top Gland Adjustment: Adjustable gland bolts allow operators to re-tighten the plug-to-seat seal in-line, eliminating stem leakage without taking the valve off the pipeline.
Technical Specifications & Standards
Specification Parameter | Standard Options & Engineering Range |
Size Range | 1/2" (DN15) to 12" (DN300) |
Pressure Class | ASME Class 150, Class 300 / PN10, PN16 |
Body Material | Ductile Iron (A395), Cast Steel (WCB), Stainless Steel (SS304/SS316) |
Lining Materials | Virgin PTFE, PFA, FEP (Minimum 3mm to 5mm Liner Thickness) |
Plug Metallurgy | Ductile Iron/Cast Steel with PFA/PTFE Encasement, SS316, Hastelloy |
End Connections | Flanged Ends (ASME B16.5 RF / DIN 2501) |
Design & Testing Standards | Designed to API 599 / ASME B16.34; Spark Tested to 20kV; Tested to API 598 |
Target Industries & Corrosive Media
FlowBiz PTFE Lined Plug Valves are installed in hydrochloric and sulfuric acid dosing networks, wet chlorine distribution, pesticide manufacturing, fertilizer plants, titanium dioxide slurry transfer, and hazardous waste treatment lines.
Contact FlowBiz Exports for liner chemical compatibility charts, torque ratings, or an immediate commercial quote for your corrosive application.