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A new ball valve is usually hard to turn for one of four reasons: new seat and stem-seal friction, high...

If a DBB valve bleed port stays pressurized after the cavity has been safely vented, compare the cavity pressure with...

Do not choose a DBB bleed from the main valve NPS alone. Choose the effective flow path that can reduce...

Ball valves do not have one fixed warehouse expiration date. A valve stored correctly for several years may still be...

Keep normal on-off ball valves fully open during through-flushing unless the valve manual requires removal or another position. Remove large...

Use 2–5% for commissioning valve and actuator repair kits and 5–10% for two-year operating stock when no plant history is...

SPE is the better seat design for automatic cavity-pressure relief. DPE is the better seat design when pressure from either...

Most incomplete ball valve RFQs are missing the fluid composition, worst operating case, maximum opening and closing differential pressure, seat...

Direct answer: Reject any quotation that fails the required pressure-temperature rating, material compatibility, bore, cavity relief, end connection, safety qualification,...