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  • Users: Stouthamer
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  1. Stouthamer

    Rerating (additional design) in existing lines

    How to rerate an existing 150# line when hydraulic testing is not possible. The design is 10 Bar and water testing @15Bar 30 yrs ago. Due to introducing a slow closing EBV 70 sec. the surge is still 18 Bar. Acc code B31.3 this shall be the new design pressure and therefore water tested again...
  2. Stouthamer

    Select flanged ballvalve type in oxygen service?

    What type ballvalve-flanged do I have to select in the Oxygen service must be grease free?

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