Gate/Disc is the primary sealing element in regulation valves that controls fluid flow by moving perpendicular to the flow direction.
The Gate/Disc is a critical component in gate valves and similar regulation valves, consisting of a flat or wedge-shaped plate that slides between two parallel seats. It operates by moving perpendicular to the fluid flow direction, either fully opening to allow unrestricted flow or fully closing to create a tight seal. This component is designed for on/off service rather than throttling, providing minimal pressure drop when open and reliable shut-off when closed. Its precise machining and material selection ensure compatibility with various fluids, pressures, and temperatures in industrial applications.
诱因 → 失效模式 → 工程缓解
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Wedge gates have tapered discs that provide self-energizing sealing as pressure increases, while parallel slide gates have two parallel discs with spring mechanisms that maintain sealing force regardless of pressure fluctuations.
Inspect annually for wear, corrosion, and sealing surface damage. Replace if leakage exceeds API 598 standards or if erosion reduces sealing surface by more than 20%.
No, gate valves are designed for full open or full close service only. Throttling causes vibration, cavitation, and premature wear of the gate/disc sealing surfaces.
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