Plug valves are classified by purpose including: soft-sealed plug valves, oil-lubricated hard-sealed plug valves, lifted plug valves, three-way and four-way plug valves.

Soft seal plug valve

Soft-sealed plug valves are commonly used in harsh environments such as corrosive, highly toxic and highly hazardous media, where leakage is strictly prohibited, and where valve material does not contaminate the media. The valve body can be made of carbon steel, alloy steel and stainless steel according to the working medium.

A. The temperature may be employed working medium and F4, F46, PVDF, PP, PO, PE and other self-lubricating liner material, good lubrication, the entire work process Sealing friction coefficient is small, plug flexible operation, long service life .

B. The window structure of the inlet and outlet end of the valve body and the structure of the double-channel grooved sealing ring. During the rotation of the cock, the sealing ratio between the sealing pairs is gradually changed until it reaches the fully open or fully closed position, resulting in sufficient sealing. Compared with the pressure, the sealing pair reaches zero leakage.

C. The double groove sealing ring can not only make the bushing stable in the valve body, but also absorb the slight deformation caused by the temperature difference, and the strong friction between the bushing and the cock, with automatic cleaning The effect is to improve the service life of the sealing surface.

D. The unique reverse lip seal design on the top of the plunger adopts a combination of a soft sealing material diaphragm and a metal diaphragm and a adjusting gasket to adjust the sealing specific pressure between the sealing surfaces, so that the plug can be rotated flexibly and can be guaranteed. Sealing of the outlet end and the middle flange connection.

E. Suitable for high flushing gas hold. Liquid solid phase medium. Such as PVC, urea, acetic anhydride, caustic soda production equipment, or external leakage requires high medium, such as HF, phosgene and so on.

F. The medium can flow in both directions, the installation direction is not limited, online maintenance is realized, and the use is more convenient.

G. Unique design to prevent static electricity, safe fireproof and safe to use.

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