Bidirectional sealing performance: The double eccentric or triple eccentric structure design is used with high-performance sealing materials (such as EPDM, PTFE, etc.) to achieve bidirectional zero leakage, ensuring that the medium can be effectively sealed in both forward and reverse flows, meeting the requirements of stringent working conditions.
Low torque operation: The unique valve plate profile and valve seat matching method greatly reduce the friction resistance during the opening and closing process, making manual operation easy and labor-saving, and significantly reducing energy consumption when driven by electric or pneumatic drive.
Compact and lightweight structure: Compared with traditional gate valves and stop valves, bidirectional butterfly valves are smaller in size, lighter in weight, require less installation space, and are easy to install and maintain quickly in narrow pipeline systems or high-altitude working environments.
Wide media adaptability: The valve body and valve plate can be made of stainless steel, ductile iron, duplex steel, etc., suitable for a variety of media such as water, steam, corrosive chemicals, oil products, etc., and the operating temperature range covers -40℃ to 450℃.
work principle
Rotation opening and closing
The valve stem drives the valve plate to rotate around the axis, 0° closing cuts off the fluid, 90° full-diameter flow, and precise flow adjustment at the intermediate angle.
01
Sealing technology
The valve plate relies on the deformation of the sealing material or mechanical extrusion, combined with the compression force generated by the eccentric design to achieve reliable sealing.
02
Pressure balance
Bidirectional flow balances the pressure on both sides of the valve plate, adapts to high and low pressure conditions, and avoids deformation of the valve plate.
03
Fluid optimization
Streamlined valve plates reduce resistance, reduce noise, and reduce internal erosion and wear.
04
Drive control
Electric, pneumatic, and hydraulic actuators drive the valve stem through a transmission device to support remote automated operation.
05
FAQ
1. Can the two-way butterfly valve be used in a vacuum system?
Some models support vacuum conditions. Metal hard sealing materials (such as stainless steel + carbide) must be selected, and the vacuum requirements must be specified when ordering to ensure sealing performance.
2. What factors affect the service life of the valve?
It is mainly affected by the corrosiveness of the medium, the working pressure and temperature, the frequency of opening and closing, and the maintenance. Regular inspection of seals and lubrication of valve stems can significantly extend the service life.
3. Does it support explosion-proof environments?
We provide explosion-proof electric/pneumatic actuators that comply with international explosion-proof standards such as ATEX and UL, and can meet the needs of flammable and explosive occasions such as petroleum and chemical industries.
4. How to choose the pressure level of the valve?
Choose according to the design pressure of the pipeline. Common pressure levels include PN10, PN16, Class150, etc. High-pressure conditions require customized special pressure-resistant structures.
5. Is additional support required during installation?
Specifications below DN300 usually do not require additional support; large-diameter valves are recommended to install pipe supports to avoid pipe deformation due to deadweight or fluid pressure.
6. Can it be operated manually in an emergency?
Electric/pneumatic butterfly valves are equipped with manual operating handles, which can be used to quickly open and close the valve in the event of power failure or gas source failure to ensure system safety.
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