Dust transfer valve
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What type of hemispherical valve should be used for conveying dusty materials?
Please specify the following parameters, OP: what is the medium, and what is the conveying pressure? For ordinary powder transportation, the pressure generally does not exceed 3 bar. Semi-ball valves are not the best choice for powder transfer
A regular ball valve with a soft seal will do
Globe valves, ball valves, or butterfly valves with soft seals. It is necessary to consider whether there are explosion-proof requirements.
We choose V-ball valves for transporting polypropylene powder
For powders that require a low conveying pressure, material valves such as plunger-type or flap-type valves can be considered; they have a simple structure, are easy to maintain, and are cost-effective.
In the case of dilute-phase pneumatic conveying, the medium exerts significant erosion on the valves; it is recommended to use hard-sealed ball valves
If resistance to erosion is required, use a track-mounted ball valve
If the pressure is not high, it is recommended to use dust butterfly valves; ball valves have high requirements regarding the size of dust particles, otherwise their service life is short and their cost is high
A plug valve will do! The other valves aren’t very suitable – either they’re too expensive, or they get clogged after being used for a while!