Disc/Plug is a critical sealing component in pressure relief valves that opens to release excess pressure and closes to maintain system integrity.
Commonly used trade names and technical identifiers for Disc/Plug.
This component is used in the following industrial products
Safety devices that automatically release excess pressure from sterile air distribution systems to prevent overpressure damage.
A valve designed to release gases or vapors from a purge system to maintain pressure balance and prevent overpressure.
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A disc is typically flat and seats against a flat or angled seat, while a plug is conical and fits into a matching seat. Discs are common in conventional relief valves, while plugs are often used in pilot-operated valves. Both serve the same function but have different geometric designs.
Inspection frequency depends on service conditions. Generally, inspect annually or after every relief event. Replace if there is visible wear, corrosion, or damage to sealing surfaces. Follow manufacturer recommendations and regulatory requirements for specific applications.
Minor surface imperfections can sometimes be repaired by lapping or machining, but this requires specialized equipment and expertise. Significant damage, corrosion, or wear typically requires replacement to ensure proper sealing and safety performance.
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