Butterfly check valve

Product Introduction:

Butterfly check valve refers to the valve that automatically opens and closes the valve disc to prevent the backflow of the medium by relying on the flow of the medium itself. The function of the clamp-connected butterfly check valve is to allow the medium to flow in only one direction and to prevent the directional flow.

Scope of application:

Butterfly check valve is used for pure pipelines and industrial, environmental protection, water treatment, high-rise building water supply and drainage pipelines to prevent the reverse flow of the medium.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Structural features:

With the swing check valve fully open, the fluid pressure is virtually unimpeded, so the pressure drop through the valve is relatively small. The disc of the lift check valve is located on the seat sealing surface of the valve body. In addition to the valve disc can be lifted freely, the rest of the valve is like a globe valve, fluid pressure causes the valve disc to lift from the seat sealing surface, and the media backflow causes the valve disc to fall back to the seat and cut off the flow. Depending on the conditions of use, the disc can be an all-metal structure, or it can be in the form of a rubber pad or rubber ring mounted on the disc holder. Like the globe valve, the passage of fluid through the lift check valve is narrow, so the pressure drop through the lift check valve is greater than that of the swing check valve, and the flow rate of the swing check valve is less restricted.

1, small size, light weight, compact structure, easy maintenance

2, the valve plate adopts the dual type, which can be closed by itself under the elastic force of the spring

3, due to the fast closing effect, can prevent the backflow of the medium

4, the valve body structure length size is small, good rigidity

5, safe and convenient, can be used for horizontal and vertical installation

Standard specification:

Design and manufacturing standard: JB/ T8937

Structure length standard: GB/T 12221-2005

Connection flange standard: GB/T 9113

Pressure temperature grade: GB/T 12224-2005

Test standard: GB/T 13927-2008