Sichuan speed D643H/F series pneumatic triple eccentric butterfly valve adopts three dimensional design of principle of eccentric elastic sealing and multi-level seal compatible with the new technology of processing of hard and soft, butterfly valve when running work reliable sealing, can achieve without leaking gas seal and adopt eccentric design extend valve life.Pneumatic triple eccentric butterfly valve actuator adopts crank arm conversion structure, with output torque, small volume, stable and reliable performance, etc.Pneumatic triple eccentric butterfly valve can be widely used in papermaking, petrochemical, chemical, metallurgical, power, environmental protection, petroleum, light industry, building automation and other industrial departments of automation control system.

    二, the D643H pneumatic triple eccentric butterfly valve product features:
    1, small volume, light weight, good cutting performance.
    2, butterfly plate sealing surface designed to relative axis of butterfly plate is a truncated cone surface, make the butterfly plate sealing surface contact with the valve seat sealing surface has a certain Angle, the Angle of contact face evenly around the circumference of a circle is equal to a narrow cuneate, and butterfly plate circular the seal line is reasonably elliptic curve, longitudinal sealing compensation effect on both.
    3, the butterfly plate sealing surface under the closed position, force uniform, high bearing capacity;Butterfly plate in the process of opening, sealing face each point from the valve seat sealing surface finish at the same time, no crowded card phenomenon, basic no friction, small open torque.As a result, low cost, good sealing performance, long service life.
    4, all kinds of sealing structure for choice, ensure the reliability and service life.Butterfly valve sealing ring have integral soft seal (PTFE, C - TFE, G - TFE), hardening of the metal plate, monolithic + carbide, suitable for all kinds of working condition.
    5, can realize two-way sealing function, can adjust, and have cut off function.
    6, actuators, low friction, high efficiency, large thrust and good security.
    7, actuators to poach, the design of the combination (manual), guaranteeing the free installation and flexible control of each direction.
    8 and simple, reliable, integrated travel instructions and the combination of limit switches and solenoid valve installation, no external piping, reduce the leakage point.
    9, a variety of actuator form choice, meet different user requirements.

    10, convenient assembly and maintenance, with superior performance and low cost.

Keywords:butterfly valve ,knife gate valve,ball valve,globe valve,slurry gate valve