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  1. oredigger

    Ball Valve Sizing matters?

    David, thank you for your help. I plan on getting in touch with the valve manufacturer to make sure they are comfortable having their valve in this type of service. again, thank you for your help. John
  2. oredigger

    Ball Valve Sizing matters?

    We have sand control in place, so hopefully sand will not be an issue. Getting a full port 4-1/16" 15K ball valve may be a problem given they want to bring the well online in 4 weeks. The high velocity will probably cut the ball, but will it also cut out the body? i agree with you that the...
  3. oredigger

    Ball Valve Sizing matters?

    Just got brought into a project team for topside facilities upgrade for subsea well. Been doing drilling engineering for last 10 yrs and am quite rusty on facilities. I was looking over some drawings of the flowline boarding the platform (5" w/ 3.5" ID.)and noticed that the 4" boarding valve...
  4. oredigger

    S-N Curve for 420 Stainless Steel

    Does anyone out there have any advice on welding the following combination of metals to each other??? 1. SA 335-GR P91 pipe this is a high chrome alloy with a 9Cr,1Mo,1V to 2. Din #17240 UNS#42200 material 1.4923 ( I think this stuff is pretty similar to a 420 SS) Any advice would be greatly...

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