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PTFE Seat Butterfly Valve Suppliers in China - D71X Series, Concentric Resilient Seated, Corrosion-Resistant Factory
| Valve Type: | Wafer butterfly valve | Structure: | Concentric |
| Standard: | EN593 | Workmanship: | Investment casting |
| Sealing Direction: | Bidirectional | Sealing Grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Handle / Lever |
Characteristics
PTFE butterfly valve is a quarter turn valve that controls flow by rotating the valve disc inside the pipeline. Rotate the actuator to rotate the valve stem and disc 90 degrees. When the disc is perpendicular to the flow direction, the valve is completely closed; When the valve disc is parallel to the flow direction, the valve is fully opened, and the position between the two can be used to adjust the flow rate.
Advantages
1
Super Strong Corrosion Resistance Performance
The PTFE lining on the inner cavity of the valve body and the surface of the butterfly plate has extremely high stability against most corrosive media such as strong acids (such as sulfuric acid, hydrochloric acid), strong bases (such as sodium hydroxide), organic solvents, and salt solutions. It can isolate the metal valve body from contact with the media, avoid corrosion damage, and is suitable for strong corrosion conditions such as chemical, chlor alkali, and pharmaceutical industries.
2
Compact Structure, Easy Installation
The clamping design uses double headed bolts to directly clamp between two pipeline flanges, without the need for additional valve flanges. The valve body thickness is only about one-third of that of traditional flange butterfly valves, occupying a small space, especially suitable for scenarios with dense pipelines and limited installation space; Simultaneously simplifying the installation steps can reduce the overall cost of pipeline layout.
3
Excellent Sealing Performance and Low Leakage Rate
Combined with PTFE valve seat and eccentric structure design (single eccentric/double eccentric/triple eccentric), it can achieve a tight fit between the butterfly plate and the valve seat, and achieve zero leakage sealing effect under most working conditions; The low friction characteristics of PTFE can also reduce the wear of the sealing surface during the opening and closing process, extending the sealing life.
Packing
📦
Standard export wooden case packaging
Application Scenarios
In the chemical industry, it is a standard configuration for production lines such as sulfuric acid and chlor alkali; In the pharmaceutical industry, its clean characteristics that comply with GMP standards make it suitable for sterile medium delivery systems; In the desulfurization system of the power industry, it can also effectively solve the problem of valve flushing caused by limestone slurry.
Frequently Asked Questions
Q
What makes PTFE butterfly valves suitable for corrosive media applications?
PTFE (Polytetrafluoroethylene) lining covers both the inner cavity of the valve body and the butterfly plate surface, providing exceptional chemical inertness against strong acids (e.g., sulfuric acid, hydrochloric acid), strong bases (e.g., sodium hydroxide), organic solvents, and salt solutions. This effectively isolates the metal components from contact with corrosive media, making it ideal for chemical, chlor-alkali, and pharmaceutical industries.
Q
What is the operating temperature range of this PTFE wafer butterfly valve?
This valve is designed to operate within a temperature range of -20°C to 120°C. For applications outside this range, please consult with our technical team to select an appropriate valve material and configuration.
Q
How does the wafer-type design differ from a flanged butterfly valve?
The wafer-type (clamping) design uses double-headed bolts to clamp directly between two pipeline flanges, eliminating the need for additional valve flanges. The valve body thickness is approximately one-third that of traditional flanged butterfly valves, resulting in a more compact footprint, simplified installation, and lower overall pipeline costs — especially beneficial in tight or dense piping layouts.
Q
Does this butterfly valve achieve zero leakage sealing?
Yes. The combination of a PTFE valve seat and an eccentric structure design (single, double, or triple eccentric) ensures a tight fit between the butterfly plate and the valve seat. This achieves zero leakage sealing under most working conditions. Additionally, PTFE's low friction properties minimize sealing surface wear during opening and closing cycles, extending the overall sealing service life.
Q
What industries and applications is this PTFE wafer butterfly valve commonly used in?
This valve is widely used across multiple industries: in the chemical industry for sulfuric acid and chlor-alkali production lines; in the pharmaceutical industry for sterile medium delivery systems that comply with GMP standards; and in the power industry's desulfurization systems to handle limestone slurry and prevent valve erosion issues.
Q
What standard does this valve comply with, and how is it operated?
This PTFE wafer butterfly valve complies with the EN593 standard and is manufactured using investment casting for precise workmanship. It supports bidirectional sealing and is operated via a handle or lever, allowing for a simple 90-degree quarter-turn to fully open or close the valve.