Overview

Double eccentric soft seal butterfly valve is a valve with unique design and excellent performance, which is widely used in various industrial fields. Its core features include double eccentric design and soft sealing structure, these designs make the valve in the sealing performance, ease of operation and service life outstanding.

Definition and working principle

The center of the valve shaft of the double eccentric butterfly valve has been offset twice, both from the center of the butterfly plate and from the center of the valve body channel. This structural design enables the butterfly plate to quickly separate from the valve seat when the valve is opened, which greatly reduces the scratching phenomenon between the butterfly plate and the valve seat, reduces the opening resistance, reduces the wear, and improves the service life of the valve seat. Double eccentric butterfly valve by rotating the valve stem to drive the butterfly plate in the valve body rotation, so as to achieve the flow control of the medium. When the valve stem rotates, the butterfly plate rotates with it, changing the flow area of the medium in the pipeline, and then achieving the purpose of adjusting the flow.

Structural features

The structure design of double eccentric butterfly valve is unique, mainly including the following points:

• Double eccentric design: the center of the valve shaft is offset twice, which reduces the friction and wear between the butterfly plate and the valve seat, and improves the sealing performance and operation convenience.
• Soft seal design: usually rubber or plastic sealing ring, suitable for different media, to provide a good sealing effect.
• High pressure resistance and long life: The sealing material is stainless steel and silicon oil-resistant rubber, which has a long service life and is suitable for high pressure environment.
• Flow field simulation technology: through flow field simulation and stress measurement technology, to ensure that product performance meets or exceeds the national standard level.D341X/H-2.5/6/10/16 worm gear drive double eccentric flange butterfly valve shape and connection size

  Note: 1. Please ask the company for detailed valve shapes and installation dimensions such as standing feet and pipe network institutions.

  2. Our company can design and manufacture the valve separately according to your needs, but it must be indicated in the contract.

  3. H2 in the table can be lengthened according to user needs (extension rod butterfly valve).