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Thread: Pump Selection

  1. #1

    Pump Selection

    I have a tank that is about 25 gallons and needs to be filled with a Hydrofluoric acid solution. I have been looking for two seperate pumps; one to dispense concentrated HF into a small (2 gal) container and another to empty the 25 gal tank after the acid has been neutralized.

    Because HF is so corrosive the first pump must not have any wetted materials that are not polypropylene, polyethylene, or a similar plastic. Also, it is vitally important that this pump dispenses the acid at a rate that will not put bystanders in danger of splashing or spraying. For this application I have been looking into peristaltic pumps, and have nearly selected a Masterflex pump with a variable flow rate of up to 3.5 GPM.

    The second pump will be transferring the neutralized acid, so corrosion resistance and safety are not as crucial. However, the fluid should not be spraying everywhere and some level of corrosion resistance is desired. I have been looking into different centrifugal pumps, but am not sure if this type of pump will suit my purpose. I am looking for a flow rate of 10-20 GPM.

    I am wondering if I am on the right track. Will the 3.5 GPM peristaltic pump be safe and effective, and will a larger centrifugal pump empty the tank as desired?

  2. #2
    Pump guy speedbump's Avatar
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    I was going to recommend the Little Giant line. They are designed to move just about any kind of acid known to Man.

    This is the model number of one that does around 1200 gph. "584684"

    The link to their Website on the page where this pump along with many others is: http://www.lgpc.com/MagDrive/ByCateg...&CategoryID=19

    If you think this and/or another one will do, let me know. I'll order them for you.

    bob...

    Products and Pricing

  3. #3
    Thanks. Magnetic driven pumps are a form of centrifugal pumps, correct? These pumps will work for emptying a tank? I want to make sure because I was warned that they are usually used for recirculation. Did you have any opinion on the pump I would use for the concentrated acid?

  4. #4
    Pump guy speedbump's Avatar
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    You can use a Magnet drive for both applications, that way, the Acid won't hurt either one. They come in all kinds of gallon per minute or hour sizes so picking the right ones should be no problem. These Pumps are not made to lift water a long way, but they will lift some.

    bob...

    Products and Pricing

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