Characteristics of eccentric rotary valve

Characteristics of eccentric rotary valve

Eccentric rotary valve is a straight through valve body structure with novel structure and low fluid resistance. The rotation center of the valve core is not concentric with the rotating shaft, which can reduce the wear of the valve seat and prolong the service life. A guide wing is set behind the valve core, which is conducive to the stable flow of fluid and has excellent stability. At the same time, it also has the advantages of large flow and wide adjustable range, and is especially suitable for the control of process system containing slurry. At the same time, it also has the advantages of large flow and wide adjustable range, and is especially suitable for the control of process system containing slurry.

In order to ensure large adjustable ratio and reliability, and reduce instrument, the regulating valve of eccentric rotary valve core. The valve can be used for sour gas or liquid, and its structure and material meet the standards of American National Institute of corrosion engineers.

The characteristics of eccentric rotary regulating valve are as follows:

1) Long life of valve seat. The durable and firm metal or ceramic valve seat sealing ring and eccentric valve core reduce the friction between the valve core and the valve seat, improve the damage of the sealing surface of the valve seat and the resistance during opening and closing. When the valve core rotates to the closed position, the valve core and the valve seat sealing ring will automatically overlap, so that the sealing surfaces can be more reasonably matched. The sealing ring of valve seat can be made of 316 stainless steel, A105 forged carbon steel, surfacing cemented carbide and ceramics.

2) Reliable performance. The special valve seat sealing ring design can automatically center, overlap and dynamically align with the valve core, which can improve the service life. The sealed metal bearing can prevent the shaft surface of particle accumulation and prevent the valve core from rotating.

3) Multiple operations are available. The self centering valve seat sealing ring and solid valve core can be in either direction of forward flow and reverse flow

Sealing is achieved when in use. In the backward flow direction, the outlet turbulent zone is far away from the sealing surface of the valve seat. In addition, the 90C stroke of the valve core also helps to reduce the scouring between the valve core and the flowing medium Reduce the possibility of damage.

4) Easy installation. The valve body with flange can be connected with different grades of pipe flanges. With different design requirements, exposed flange screws can also be avoided The positioning surface and overall effect during installation are also good. It can also provide compression type flangeless valve body, which can be positioned by flange screws during installation.