Bidirectional hard seal butterfly valve is our professional and technical staff optimized design, including the advantages of national patents, high-performance products
Valve structure
Bidirectional hard seal butterfly valve structure adopts floating sealing ring, sealing ring in the valve body can be closed according to the valve plate thrust to adjust its position, floating sealing can compensate for the valve in different working conditions (such as high temperature) under the production of deformation, thermal expansion, etc., to eliminate damage to the sealing surface, to ensure that the sealing coincides with the pressure uniformity, extend the service life of the seals to improve the sealing effect.
Valve seat ring in the temperature cycle state to maintain the closing performance; valve body contraction is not transmitted to the seat, not the valve appears blocking.
Valve can be floating seal, long-term use of sealing performance decline, can be replaced by the sealing ring, you can restore sealing performance, at the same time can be realized in the field to disassemble and replace the sealing ring, the same specifications of the butterfly valve sealing ring has a very good general interchangeability.
Valve using axial positioning device does not occur axial butterfly plate leap caused by upper and lower sealing surface part of the pressure injury, wear and tear leakage. Valve is suitable for thermal pipeline shut-off and flow control, should have excellent corrosion resistance and two-way sealing performance.
Under the design parameters, the valve's two-way sealing grade are up to GB/T13927-92 standard maximum allowable leakage B level.
Valve body can withstand the maximum torque that may be generated by the thermal network 300N/mm, the valve shell wall thickness can withstand the axial force of the thermal network, and in the guaranteed service life, and then under the design parameters of the switch flexible and free, no jams.
Uses And Charac teristics
1, butterfly valve for two-way pressure, two-way seal. Eccentric S-type conical valve seat or movable piston valve seat is adopted to ensure the reverse pressure-bearing performance.
2、Smaller operating torque, turn 90 degrees to open and close, light and rapid.
3, small flow resistance, has good hydraulic properties, flow characteristics of the approximate inclined straight line, energy-saving effect, bidirectional sealing of the water flow without direction requirements.
4、Reliable sealing, opening and closing life of more than 25,000 times, service life of more than 25 years.
5、Valve plate adopts double flat truss type multi-runner design in line with the performance of fluid mechanics.