Pneumatic three-eccentric butterfly valve body part of the three eccentric structure, valve plate and sealing mechanism unique design, with excellent cutting performance and durability, both cut off and adjust the dual functions. Pneumatic three eccentric butterfly valve its small size, light weight, economical and practical, easy to maintain, widely used in metallurgy, chemical, petroleum, heat, energy, light industry and other fields. Pneumatic three eccentric butterfly valve features 1, small size, light weight, with excellent cutting performance. 2, the butterfly valve sealing surface is designed relative to the butterfly axis as a beveled frustoconical surface, the sealing surface of the butterfly valve and the valve seat sealing surface have a certain contact angle, the contact angle uniformly around its circumference equal to an elongated Wedge-shaped, and the sealing line at the circumferential direction of the disc has a quasi-elliptical curve, both of which play the role of seal compensation. 3, the butterfly plate sealing surface in the closed state, uniform force, high pressure capacity; butterfly plate in the opening process, the sealing surface at the same time to complete the valve seat sealing surface from the action, no crowding phenomenon, the basic friction, Open torque is minimal. Therefore, low cost, good sealing performance and long service life. 4, a variety of sealing structure for selection, to ensure the service life and reliability. Butterfly valve seals with integral soft seal (PTFE, C-TFE, G-TFE), hardened sheet metal, monolithic + cemented carbide, suitable for a variety of conditions. 5, can achieve two-way sealing function, both can be adjusted, but also has cut off function. 6, the implementing agencies of low friction, high efficiency, thrust, good safety. 7, the implementing agencies dexterous, combined type (manual mechanism) design, to ensure that the direction of the free installation and flexible control. 8, simple and eye-catching, reliable and integrated travel instructions and the combination of limit switch and solenoid valve installation, no external pipelines to reduce leakage points. 9, a variety of implementing agencies to choose from to meet different user requirements. 10, easy assembly and maintenance, with superior cost performance. ã€Print】 ã€Close】