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  1. inginear3

    pad welding cast iron fits

    We've tried pad welding just like you describe on cast iron bowls. It doesn't matter the size of the weld. They crack unless you follow the proper preheat and cool down. Have you thought of machining a ring to shrink on the part to reclaim the fit? We have done that before in lieu of welding on...
  2. inginear3

    pad welding cast iron fits

    It isn't preferred to ever weld a cast iron pump component. We would try to stock cast steel replacements. What are you trying to repair? You could machine new from bar stock depending on the component. However, I have been in a pinch before and welded CI with Ni-Rod. The high preheat is...
  3. inginear3

    Hydrotest

    If this is a centifugal pump with a mechanical seal, this should not be done. I am assuming you will go to 1.5*design pressure or flange rating (for Cl.150 429#, Cl.300 1100#). The seal will open up at that high pressure and you will damage it and fail the hydrotest. I'm not a seal expert but I...
  4. inginear3

    Trimmable Flinger Disc (Trico) - Reviews?

    Has anyone had any experience utilizing the Trico trimmalbe flinger disc in an API pump application? I have an older pump with a bad oil ring design and I thought this might be an easy fix. Any advice is appreciated. Click the link to see instructions for the disc. Thanks.
  5. inginear3

    Pump Housing Weld Repair

    I am a young engineer searching for information or litature on how to properly weld buildup and machine a pump case, bearing housing bore or seal chamber? I currently have a cast steel pump that the seal chamber is about 0.010" oversized. I was going to weld and machine to the proper fit. I...

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