Applications of cut-off valves for dry solid materials
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I’m seeking advice from all of you: what kind of valve would be suitable for shutting off solid materials under pressure? The materials are non-corrosive and have low abrasiveness; the operation takes place at room temperature. The valve needs to have a special mechanism to prevent material buildup, as well as good airtight performance, and it should be installed in a vertical pipeline. Thank you so much for this first
I’ve encountered the same problem as well; I hope to get this post to the top and hear the opinions of the experts here!
A gate valve will work; it depends on what the material is – in some cases, a ball valve is also suitable.
If the solid particles are large in diameter and high in hardness, and good sealing performance is required, it is recommended to use heavy-duty gate valves with special wear-resistant rubber linings, as these offer a longer sealing life compared to ordinary gate valves with metal seals
Ball valves that prevent sticking are preferable; they are widely used in the petroleum coking industry at present. When installed in synthetic gas pipelines contaminated with scale, they yield good results
The solid particles are relatively large and difficult to cut, which can cause the valve to stick; therefore, a special anti-sticking design is required, and ball valves alone may not be sufficient to meet the requirements.