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  1. p92

    Unusual pump casing erosion situation

    The pump actually runs continuously. When we switch over to the in-line spare to make repairs to a pump that is having issues, we flush out the troubled pump ahead of time. We thought we might have had a clump when the first pump had its issues, but having it for four other pumps after that is...
  2. p92

    Unusual pump casing erosion situation

    Hi Ethan317, I may not have stated the situation as clearly as I thought. The suction nozzle actually looks pretty clean. It's once you get inside the casing that you see the "phonographing." It goes as far as the outside diameter of the impeller. You think a suction diffuser would still be...
  3. p92

    Unusual pump casing erosion situation

    4" suction, 3" discharge, 10.25" open impeller. Ferralium 255 material of construction. Chemical slurry, so it's not like a rock slurry or something. The "what has changed recently?" is the part that has gotten me confused. It doesn't look like anything has changed. We took a short outage, not...
  4. p92

    Unusual pump casing erosion situation

    Mmmmm...well, technically, I'm not supposed to send any photos (even harmless ones like this) without a signed form for each company I send it to. I can only imagine how many forms I'd have to sign for a Web posting... =) What would you be looking for in particular? There doesn't seem to be...
  5. p92

    Unusual pump casing erosion situation

    Here's an unusual situation... 1. Centrifugal pump in slurry service. Hardened alloy material. 2. Short outage to briefly do maintenance elsewhere---nothing done with this pump. 3. When pump starts up, the pressure drops dramatically. within days. 4. Removal of casing shows concentric rings all...

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