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  1. DamianThorn

    API 6A Ball Valve testing

    Hi Miejot, Replace the word gate for ball and follow the same sections for testing. That is the common practice for valve manufacturers producing ball valves to API 6A standard. I have worked for numerous years for a HPHT subsea ball valve specialist and for an EPC delivering valves from...
  2. DamianThorn

    API 527 bubble size

    Hi All, Struggling with my geometry. API 527 states a tube of 6.12 ID (7.9 OD x 0.89 WT) at a depth of 12.7mm under the water surface to measure the bubble leakage. Although not stated in API 527 the bubble volume is 0.295 cm3, however using 4/3.pi.r^3 this does not equate to 0.295 cm3. I...

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