high performance triple offset metal seated butterfly valve

Product description :

The high-performance eccentric butterfly valve adopts a double eccentric butterfly plate with a spherical sealing surface and a single-piece flexible lip seal seat. It is suitable for occasions requiring reliable sealing and good adjustment characteristics. Due to the design of the double eccentric butterfly plate, the door has tight sealing performance and a long service life. Can be used to quickly cut off or adjust flow. The product is suitable for the transportation of liquids and gases (including steam) in various industrial pipelines, and can also be used for special media, such as chlorine, oxygen, high vacuum, sulfur-resistant or corrosive media. Products are also available with fire-resistant construction options.

Eccentricity principle

•First eccentricity:

The center of the butterfly plate axis hole is offset relative to an elliptical surface on the butterfly plate at an axial position parallel to the center line of the pipe.

•Second eccentricity:

The center of the butterfly plate shaft hole is offset from the center line of an elliptical long axis on the butterfly plate at a radial position perpendicular to the center line of the pipe, creating a cam effect that can eliminate friction between the valve plate and the valve seat within 80% of the rotation range. ,touch. technical features

.Technical features

. We adopt the double eccentric structure design principle.

There are no non-metallic elastic components at the connection between the valve body and the mesh seat, which eliminates elastic failure caused by the elastic components being used for too long.

Completely adopts multi-layer metal sheet sealing structure and all-metal sealing structure to achieve true internal fire protection function.

Double safety structure, in order to prevent the valve stem from being damaged or flying out due to various reasons, causing sudden accidents, a pin is designed to continuously compress the valve stem and the plate, and a unique elastic clamp combination is designed to prevent "falling off". Hold offerings.

•High sealing packing structure design, the elastic clamping part not only has the function of preventing the rod from flying out, but also has the elastic compensation function of the packing; detailed design considerations to avoid leakage can ensure the safety of stacked lines in various fields such as petroleum and chemical industry. Used for pipelines with toxic and harmful media.

•Small opening torque, light and convenient, capable of producing large diameters