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  1. NPS1978

    API-594 check valve rev. history - dual security

    Wondering if anyone knows in which revision the requirement for dual disc nut security was added? This is the statement that a single tac weld or lock nut alone is not sufficient to secure the disc to hanger arm. It's a terribly written sentence. Last revision added anti rotation device, any...
  2. NPS1978

    What's a basic Valve engineer software package?

    Thanks
  3. NPS1978

    What's a basic Valve engineer software package?

    I am not the engineer here so I don't have a clue; is there a big learning curve for an Engineer with Solidworks experience to move over to Inventor? I have been reading alot of reviews and it seems Inventor has the consensus vote. I'll be buying the sotware new so would like to make the best...
  4. NPS1978

    What's a basic Valve engineer software package?

    Yeah that's great, so how about a software recommendation.. thoughts on AutoCAD Ivnentor Pro?
  5. NPS1978

    What's a basic Valve engineer software package?

    We have always used simple 2D autocad lite since the majority of drawings are gate globe check valve and only minor tweaks are being made. Now getting into R&D into some slightly more engineered products, Pressure Seal Bonnet, Pipeline valves, etc. For that we will get a 3D cad program (AutoCAD...
  6. NPS1978

    Cast vs Fabricated - pipeline gate valves (M&J vs WKM)

    I'm wondering what are the advantages in a fabricated valve, such as M&J or Grove's API 6D gates vs a more traditional cast valve. The price difference is substantial but the function is the same. I have a good understanding of castings so I cannot see why there is a need for welded plate...

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