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  • Users: RangerBill
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  1. RangerBill

    Use of NPT threaded valves Subsea

    A client is looking for our definitive guidance regarding the suitability of fitting an NPT threaded 1" vent valve assembly into a blind flange at the end of a subsea hydrocarbon spool. The flange is duplex the valve 316. The spool is located under a wellhead flowbase. Failure of the NPT...
  2. RangerBill

    Minimum linepipe circumfrential Weld Separation

    Sorry if this has been covered before, search facility down at the moment. I am having trouble locating a suitable design code (ASME, API or else) which gives design guidance on the minimum weld clearance for the following scenario: What is the minimum clearance between a...
  3. RangerBill

    Studs vs Bolts into valve block?

    We have an application on a current project where we are using 1/2" bore double block and bleed valves at high points in a subsea manifold piping system (2-1/16" API 6A 10K flange faced, Duplex material). The compact valves are machined out of a single block of Duplex material with 10K...
  4. RangerBill

    Studs vs Bolts into valve block

    We have an application on a current project where we are using 1/2" bore double block and bleed valves at high points in a subsea manifold piping system (2-1/16" API 6A 10K flange faced, Duplex material). The compact valves are machined out of a single block of Duplex material with 10K...
  5. RangerBill

    10K API 6A 6BX Flanges

    I am looking for a bit of advice regarding how to 'modify', within the API 6A guidelines, a 10K 6BX flange out of the spec. to fit commercially available pipe sizes. i.e a 2-1/6" 10K flange doesn't fit a 2" NB pipe od (60.3mm) as the minimum dimension of the flange hub is larger than...

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