Metal seat sealing pressure design for flat gate valves per Valve Design Manual criteria. Based on Valve Design Manual standards.
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Minimum required sealing pressure computed from seat width and rated pressure.
QMJ (media force) + QMF (seal force) = QMZ total.
Sealing pressure q must satisfy qMF <= q <= [q] for reliable seal.
Pass/fail based on industry-standard dual-bound criteria.
Uses exact PI (not 3.14) for all circular calculations.
Original textbook q=208.6 was an arithmetic error; corrected to ~104.97.
Input rated pressure, seal face ID/width, and allowable sealing pressure.
QMJ = pi/4 * (DMN + bM)^2 * Pn.
Required sealing pressure from empirical formula (3.5+Pn)/sqrt(bM/10).
Check qMF <= q <= [q]; pass/fail displayed instantly.
Enter your design parameters and get instant verification results.
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