Solid-containing ball valves often have valve seats designed with scrapers.
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Where is the scraper design located? The sealing surface should fit against the valve ball
It involves creating a scraper at the opening of the sphere; as it rotates, this scraper inadvertently scrapes the valve seat as well
The scraper design mentioned frequently at the valve seat refers to a groove located beneath the sealing surface of the valve seat, which functions as a scraper. As shown in the figure. Purpose: To remove adherents from the ball core using the valve seat under operating conditions, such as in PDS ball valves, slag lock hoppers, and similar devices. Prevent the medium from entering the middle chamber, which could cause the valve to get stuck in place.