Comparison of regulation performance between globe valves and stop valves
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I don’t come into contact with plug valves very often; could you please introduce their characteristics and their regulating capabilities?
Plug valves and ball valves serve similar purposes, being suitable for quick opening and closing to shut off flow. Not suitable for adjustment. The plug and valve body (F4 bushing) feature an ideal tapered design; when sealing fails due to wear during use, the plug can be moved downward by adjusting the screw on the valve cover, thereby compensating for the sealing force applied to the sealing surface. ▪The top sealing assembly forms a second external seal, preventing the medium from leaking outward through the valve stem in the event that the sealing surface fails. ▪After loosening the four bolts on the upper valve cover, all the components inside the valve can be removed, allowing for the direct replacement of the valve parts without having to remove the valve from the pipeline. ▪It has the advantage of simultaneous sealing at both the inlet and outlet ends; during the entire operation, the friction coefficient of the sealing surface is low, the plug moves smoothly, and no lubrication is required. ▪It has good sealing performance and a long service life. ▪Replacing the part lining material allows it to be used with various media. ▪Its sealing is achieved through the sealing surfaces around the collar. ▪Unique 360° metal lip protection fixing clip. ▪The valve does not have a cavity for the medium to accumulate in. ▪The metal lip provides self-cleaning functionality as the plug rotates, making it suitable for applications with viscous fluids and a tendency to form scale.
The selection of valves still depends on the working medium.
Luoyang Sanxuan Special Valves Co., Ltd. provides free technical consultation at 18037565993