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2022

The eccentric hemisphere valve is divided into two types in appearance and structure

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The eccentric hemisphere valve is divided into two types in appearance and structure:

1. Top-loading type: mainly for the medium with very serious erosion and wear, the top-loading structure is very convenient for the replacement and maintenance of the damaged opening and closing parts, and there is no need to remove the entire valve from the pipeline, which greatly saves maintenance time and cost.

2. Side-mounted type: The side-mounted type is compact in structure and light in valve weight, and is suitable for occasions where valve installation space is required.

Features of hard seal eccentric hemispherical valve

1. Its structure adopts the principle of eccentric tightness. The purpose of gate tightness, adjustment and closing is achieved through the transmission mechanism. The sealing pair is a metal surface ring with hard surface contact seal. , and the valve is not flushed, the valve core is not flushed when it is closed, and the spherical surface of the valve core gradually progresses along the valve seat when it is opened, effectively removing fouling obstacles and achieving reliable sealing. It is especially effective for the mixed flow conveying of two-phase mixed flow with the precipitation of fouling-prone solids.

2. The hemisphere of the valve is made of bimetal, the base metal is surfacing with different alloys, and the valve seat is also surfacing with special treatment. The sealing surface is combined into various types such as anti-corrosion, wear-resistant, high-strength, etc. .

3. The seal is tight, and the transport of harmful gases can reach zero leakage.

4. The valve core of the sealing pair has a compensation amount. When the valve is worn, turn it a little when it is closed, so that it can be reliably sealed and prolong the service life. In addition, the user can screw off the compression nut, and the valve seat can still be used after adjustment or replacement, which avoids the disadvantages of the whole machine being scrapped after the valve seal fails.