Shop OBEX P1 Docs P2 Docs Learn Events
small pumps — Parallax Forums

small pumps

ArchiverArchiver Posts: 46,084
edited 2002-08-19 15:17 in General Discussion
does any ony remember where we can get some small pumps, battery powered.
the liquid being pumped is corrosive so it cant contact the pumps
internal parts.
they only need to pump a real small amount of liquid.
first i sense low water in the pool.
then i fill a barrel with the lawn well pump
then im going to de mineralize my water with muratic acid.
then remove the acidity with sodium bisulfate.
then chlorinate the water.
then use a pony pump to put the water from the barrel to the pool.
then repeat the process until the pool is full.

so my processor is going to be doing a lot (of waiting) but some work.

thanks

norm







_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail.
http://www.hotmail.com

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2002-08-19 15:17
    At 13:20 08/18/02, norman doty wrote:

    >does any ony remember where we can get some small pumps, battery powered.
    >the liquid being pumped is corrosive so it cant contact the pumps
    >internal parts.
    >they only need to pump a real small amount of liquid.
    >first i sense low water in the pool.
    >then i fill a barrel with the lawn well pump
    >then im going to de mineralize my water with muratic acid.
    >then remove the acidity with sodium bisulfate.
    >then chlorinate the water.
    >then use a pony pump to put the water from the barrel to the pool.
    >then repeat the process until the pool is full.
    >
    >so my processor is going to be doing a lot (of waiting) but some work.
    >
    >thanks
    >
    >norm

    Norm, the chemistry above is all wrong. Muriatic (hydrochloric) acid will
    acidify the water; it will not remove minerals from it. Sodium bisulfate
    forms an acidic (sulfuric acid) solution in water; it will not neutralize
    the muriatic acid, just add additional acidity. What you will have is an
    acidic solution with all the original minerals, plus additional sodium.

    That said, the type of pump you probably want is called a "peristaltic
    pump." You can find a zillion references at http://www.google.com. They
    don't tend to be cheap and they require periodic (preemptive) replacement
    of the tubing inside the pump. You must use the specified tubing, not just
    any stuff you have on hand.

    When it comes to tubing replacement, I prefer to install a longer length
    than necessary and just slide it thru the pump so a fresh section contacts
    the pump's rollers. That's cheaper than replacing a full length of tubing
    when most of it isn't inside the pump. If you do that, always slide the
    tubing in the direction of the outlet of the pump as once it is used it
    tends to be flatter (or at least to flatten more easily) and will tend to
    collapse if you move the used section to the suction side.

    Another option for small volume, low pressure use is a pump with an
    impeller that is magnetically coupled to the drive unit - no shaft thru the
    pump housing. Such pumps can be all plastic with the magnet imbedded in a
    plastic impeller. Search Google for "magnetic impeller pump." This might
    be the cheaper solution.

    Good luck.


    73 de Jim, KB3PU
Sign In or Register to comment.