Wafer, lug and double flanged butterfly valves compared: bolting, dead-end service, removal, gasket faces and where each body style fails.
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API 609 stops at NPS 60, AWWA C504 at 72 in. What really governs a DN2000 butterfly valve: offsets, shaft deflection, velocity and six failure chains.
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Wafer, lug and double flanged butterfly valves compared: bolting, dead-end service, removal, gasket faces and where each body style fails.
API 609 stops at NPS 60, AWWA C504 at 72 in. What really governs a DN2000 butterfly valve: offsets, shaft deflection, velocity and six failure chains.
