Description
PTFE Seat Spherical Butterfly Valve - Zero-Leakage & Low-Torque Chemical Control
FlowBiz Exports is a renowned manufacturer and global exporter of high-performance PTFE Seat Spherical Butterfly Valves. Designed with a spherical-contoured disc profile and a premium virgin PTFE seat liner, these valves ensure uniform continuous contact, ultra-low operating friction, and bubble-tight shut-off across highly aggressive, corrosive, and chemical process media.
Key Features & Operational Superiority
- Spherical Disc Profile: The spherical machining of the disc perimeter ensures constant, uniform contact pressure against the PTFE seat, preventing localized wear and extending seat life.
- Corrosive Chemical Resistance: Inert, high-grade PTFE seat lining delivers exceptional protection against acids, solvents, and reactive chemicals.
- Bubble-Tight Sealing: Resilient elastomeric backing behind the PTFE seat provides dynamic sealing force for zero-leakage isolation in both flow directions.
- Smooth, Low-Torque Operation: Reduced friction coefficient between the spherical disc edge and PTFE seat minimizes actuator sizing requirements and operational energy costs.
Technical Specifications & Material Grades
Parameter | Specification Details |
Size Range | DN50 to DN600 (2” to 24”) |
Pressure Rating | PN10, PN16, Class 150 / ASME B16.5 |
Temperature Range | -20°C to +180°C |
Body Materials | Ductile Iron, Cast Steel (WCB), Stainless Steel (CF8 / CF8M / CF3M) |
Disc Materials | Spherical SS316, SS304, PFA Lined Stainless Steel, Hastelloy |
Seat / Liner Material | Virgin PTFE / Glass-Filled PTFE with EPDM / Silicone Backing |
Body Style | Wafer, Lug, and Double Flanged Types |
International Standards & Quality Inspection
All FlowBiz PTFE seat spherical butterfly valves are manufactured in accordance with API 609, ISO 5752, and BS EN 593 standards. Every unit undergoes 100% hydrostatic body pressure testing, high-pressure pneumatic seat testing, and PTFE lining spark checks as per API 598 guidelines prior to shipment.
Industrial Applications
Our PTFE seat spherical butterfly valves are widely deployed in demanding fluid-handling environments, including:
- Chemical Processing & Acid Transfer Lines
- Fine Chemicals & Pharmaceutical Manufacturing
- Water Treatment & Desalination Systems
- Fertilizer & Pesticide Production
- Paper Pulp & Dyeing Industries
Why Choose FlowBiz Exports?
At FlowBiz Exports, over three decades of manufacturing mastery back every industrial valve we produce. We combine state-of-the-art infrastructure, certified testing procedures (Hydrostatic, Radiography, PMI), and rigorous quality control to deliver long-lasting performance. With global export compliance, custom engineering solutions, direct factory pricing, and committed technical support, FlowBiz is the trusted partner of choice for leading engineering contractors and industrial buyers worldwide.