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Center line butterfly valve

Design code

Design standard:API 609,EN 593,GBT 12238,
Structural length: API 609,EN558,ISO 5752,GB/T 12221
Connection standard: ASME B16.5,ASME B16.47,GB/T 9113 ,HG/T 20592,
Test and Inspection: API 598, GB/T 26480
Pressure-Temperature:-15~+150℃
Connection: Clamping type, lug type, flange type, butt-welding type

  • Product Profile

    Centerline butterfly valve for the valve stem axis, butterfly plate center, the center of the body in the same position (also called concentric butterfly valve). Simple structure, easy to manufacture. Seal material is rubber, PTFE and other elastic materials. Seat sealing materials are: NBR, EPDM, NR, CR, FKM, PTFE and so on.


  • Design Feature

    1. the elastic seal makes the valve have bi-directional zero leakage performance. 2. the seat is lined with rubber / fluorine plastic to avoid contact with the fluid medium.


    2. the seat is lined with rubber/fluoroplastic to avoid contact with the fluid medium, different material combinations to meet a variety of working conditions.


    3. flow linear butterfly plate design + edge polishing, giving lower operating torque and minimum pressure loss, ensuring longer zero leakage sealing and seat life.


    4. Flexible design of whole shaft and half shaft, pinned and pinless to meet different customers' needs.


    5. Due to the limitation of structural features, centerline butterfly valves are not adapted to high temperature, high pressure and corrosion and abrasion resistant industries.


     



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