Regarding the issue of static electricity protection for valves
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Here, we have some butterfly valves equipped with EPDM soft seals (gaskets on the valve seat, but no seals on the valve disc) that are used in dust pipelines, some of the dust in which being starch. Could static electricity accumulation pose a risk of dust explosions? (Without nitrogen protection)
The valve is approximately 300 in length, uses flange connection, and has static bonding applied to its front and back.
Dust explosions require specific conditions; valve operation does not cause them
This type of valve can be equipped with an anti-static design; both the valve core and the valve body can have such a feature. During maintenance, it is also necessary to test the overall resistance of the valve
The main concern is that dust friction at the valves could generate static electricity, leading to an explosion
It’s already in use, so I’m asking if there’s any risk of it exploding