Precision sealing component in steam generator feedwater control valves that regulates flow and prevents leakage.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Leakage Class | ANSI/FCI 70-2 Class IV or better | |
| Seat Diameter | 25-150 mm (standard sizes) | |
| Surface Finish | Ra 0.4 μm or better | |
| Pressure Rating | Up to 250 bar | |
| Temperature Range | -20°C to 400°C | |
| Flow Coefficient (Cv) | 10-600 depending on size |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
Precision flow control assembly for regulating boiler feedwater in industrial steam generation systems.
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The valve seat provides the primary sealing surface that prevents feedwater leakage when the valve is closed and controls flow characteristics when open, ensuring precise regulation of water entering steam generators.
Inspection intervals depend on operating conditions but typically range from 12-24 months. Replacement is needed when leakage exceeds Class IV standards or erosion reduces sealing effectiveness by more than 0.1mm.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.