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Our PTFE Lined Butterfly Valve is a quarter-turn rotary valve that achieves on-off and throttling control of fluid media by rotating the disc 90 degrees. The entire internal wetted surface of the valve—including the valve body, disc, and seat—is fully lined with high-quality PTFE (Polytetrafluoroethylene), a synthetic fluoropolymer renowned for its exceptional chemical inertness, low friction coefficient, and wide temperature adaptability. This full-lining design ensures that no metal components come into direct contact with the process medium, maximizing corrosion protection and preventing medium contamination, while the streamlined disc structure minimizes fluid resistance and improves flow capacity.
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20daysPTFE Lined Butterfly Valve
The PTFE Lined Butterfly Valve is a high-performance industrial control valve specifically designed for corrosive, high-purity, and harsh working environments. It integrates advanced structural design, premium material selection, and precise manufacturing processes to provide reliable flow control, excellent sealing performance, and long service life for various industrial pipeline systems.
Unlike standard butterfly valves, this product adopts a full PTFE lining technology that completely isolates the metal valve body from the medium, effectively solving the problem of corrosion and contamination in critical fluid control applications, making it an ideal choice for industries requiring strict medium compatibility and operational safety.
| Component | Materials / Options |
|---|---|
| Body | CI / DI / SS / Bronze |
| Disc | DI / SS / Bronze |
| Shaft | SS410 / 420 / 316 / Monel K500 |
| Seat | PTFE |
| Operator | Handlever / Gearbox / Actuator |
01. Full PTFE Lining Design: The valve body, disc, and seat are fully lined with PTFE, ensuring no metal components contact the medium. Optional anti-static liners are available for explosion prevention.
02. High-Strength Valve Body: Constructed from Cast Iron, Ductile Iron, or Stainless Steel to ensure excellent mechanical strength, pressure resistance, and structural stability.
03. Precision-Machined Disc: Fully encapsulated with 3mm PTFE/PFA overmoulding to ensure a perfect fit with the seat, achieving bubble-tight sealing and reducing friction during operation.
04. Advanced Sealing System: Combines an integral PTFE seat with an elastomer backliner to maintain stable sealing performance and zero-leakage even after long-term use.
05. Flexible Operation Mechanism: Equipped with a sturdy valve stem supporting multiple operation modes, including manual (lever, gear), pneumatic, and electric actuation.
Q1: What is the maximum temperature the valve can handle?
A: The standard PTFE lined butterfly valve can operate reliably in temperatures ranging from -20°C to 200°C (-4°F to 392°F), depending on the specific body material and operating pressure.
Q2: Can the valve be used for precise flow regulation?
A: Yes, the quarter-turn disc design and low-friction PTFE lining make it suitable for both quick on-off control and precise throttling/flow regulation in various industrial scenarios.
Q3: Does the valve support automation?
A: Absolutely. Our valves are equipped with an ISO 5211 mounting pad, allowing for easy installation of pneumatic or electric actuators to meet your automation needs.
The center of rotation of the butterfly plate of the flange butterfly valve (ie the center of the valve stem) is located on the center line of the valve body and the sealing surface section of the butterfly plate. The valve seat is made of synthetic rubber. When closed, the outer circular sealing surface of the butterfly plate squeezes the synthetic rubber valve seat, which makes the valve seat elastically deformed and forms an elastic force as the sealing pressure to ensure the sealing of the butterfly valve. Well-known domestic manufacturers include Shanghai Quangong Valve Equipment Co., Ltd. and Hunan Xinxing Hydropower Equipment Co., Ltd. Its company is a designated management and production enterprise by the Ministry of Machinery Industry, the Ministry of Chemical Industry, and China National Chemical Equipment Corporation. Its products have certain price advantages and technical advantages in the industry.
The driving mode of the lug butterfly valve can be manual, worm gear, pneumatic, electric, hydraulic. The connection method can choose flange and wafer, the structure can choose single eccentric, center line, double eccentric, triple eccentric, and the sealing structure can choose soft seal or hard seal. The pressure range is PN0.1-10Mpa, the nominal diameter is DN40～2000mm, and the material can be cast steel or stainless steel. Due to the wide range of use of valves, the same valve has different combinations in different occasions and working conditions.
The butterfly valve plate of the wafer type butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0°-90°. When the rotation reaches 90°, the valve is fully opened. This valve is generally installed horizontally. The wafer butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be opened and closed quickly by rotating 90°, and the operation is simple. At the same time, the valve has good fluid control characteristics.
This Wafer Type Dual Plate Check Valve is expertly engineered to efficiently prevent medium backflow in industrial pipeline systems. It features an advanced dual-plate and internal spring-loaded mechanism: the plates open automatically with forward fluid pressure and are instantly forced closed by the springs when flow stops or reverses. This rapid closure effectively minimizes water hammer and protects downstream pumps and equipment. Compared to traditional flanged check valves, its compact and lightweight wafer design significantly reduces installation footprint and allows for both horizontal and vertical mounting. Available in Cast Iron, Ductile Iron, Stainless Steel, and Bronze with NBR or EPDM seats, it is widely utilized in water supply, fire protection, shipbuilding, and water treatment applications to ensure safe network operation.
Our PTFE Lined Butterfly Valve is a quarter-turn rotary valve that achieves on-off and throttling control of fluid media by rotating the disc 90 degrees. The entire internal wetted surface of the valve—including the valve body, disc, and seat—is fully lined with high-quality PTFE (Polytetrafluoroethylene), a synthetic fluoropolymer renowned for its exceptional chemical inertness, low friction coefficient, and wide temperature adaptability. This full-lining design ensures that no metal components come into direct contact with the process medium, maximizing corrosion protection and preventing medium contamination, while the streamlined disc structure minimizes fluid resistance and improves flow capacity.
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