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  1. CJD1984

    Better seal for pumps

    HiriseBuilding- Depending on the type of pump that you are using, you may be able to retrofit the existing packing to mechanical seals. It depends on the internal dimensions, but you may be able to utilize an "off the shelf" seal. If your pump does not easily fit a standard, mass-produced...
  2. CJD1984

    Pumping Ammonia

    Please provide your input on the following application: Currently, the internal gear pumps are experiencing frequent mechanical seal failures and the facility would like to replace the pumps. As we should know, problems in the pump are typically not JUST the pumps fault....the pump just...
  3. CJD1984

    Sealing NaOH

    Thanks for the inputs. Ultimately, I am going with a regenerative turbine pump with a seal quench stariving the sealing area from oxygen. The quench will not require any additional utility costs over and above operating the pump. The end user went with this option due to the low purchase...
  4. CJD1984

    Sealing NaOH

    All, thanks much for the input. I am very familiar with each of these centrifugal, peristaltic and helical gear technolgies and each has their place. Yet, my issue now is differential pressure abilities. I need to provide 200 PSI differential at 6 GPM......the helical gear and peristaltic...
  5. CJD1984

    RE: Pumps in Lime Slurry Service

    We sell pumps for a living and I would concur with the peristaltic hose pump idea. -NO SEALS! -1 wetted part that is easily replaceable and -the rotor(s) is in constant compression with the hose preventing solidification in the hose. Word of advice...select a pump that has a rotor that...
  6. CJD1984

    Sealing NaOH

    I am looking to select a pump that will dose 4-6 GPM of 25% NaOH at 110ºF. The big issue I have seen in the past is mechanical seal selection in any NaOH application due to its crystallization when it contacts atmosphere. Obviously, a double seal would work if the sealing area is starved of...

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