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Identifying Pumps

Weezbo
Weezbo Member Posts: 6,232
in THE MAIN WALL
it is as you say and Bob got what i am saying in a heart beat :)

Comments

  • Mike D_8
    Mike D_8 Member Posts: 4
    When faced with no labels

    How do you identify the model of a circulator when the tag is rusted over or missing? I looked at a job yesterday that was around 900,000mbh connected load. There were three pumps on the supply and two were leaking from neglect. One was a BG ser 100, so that was obvious with no tag, but the other two were Taco (i think 18/1900 series) that were very corroded. The light and access was poor at best and all I could find were some numbers cast in the volute body to use for id. I am looking for some "easy" way to id a pump other than by paint job? The two in question were on 2" pipe, one had a 2bolt flange, and the other a 4bolt. I did get the motor rating so I can narrow it down. 1hp 1725rpm 115v Thanks for your help.
  • Weezbo
    Weezbo Member Posts: 6,232
    that is a good question

    because not all installations have the same skill sets used in the choice of the circulators.

    you might want to check Tacos Site...they have plenty to chose from...2 inch flanges are not all created equal either.

    there are HV circs for example these flanges don't marry up to some two inch flanges...

    the HP of the circ should narrow some of the choices though.
  • bob young
    bob young Member Posts: 2,177
    check size

    You also do not know if they were sized properly to begin with. resize & bill accordingly. same as replacing a boiler or related equipment. might as well get it right.
  • Mike D_8
    Mike D_8 Member Posts: 4
    Your right

    The more I think about it, the more that I think that if the pump in question is in fact in question(as to its size and effectiveness) then its best to try to calculate what it should be and be right the first time.
  • Unknown
    Unknown
    Identifying Pumps

    Great question. Some suggestions…

    Bearing frame number and flange size can identify the range, when matched up to the Hp we (the pump industry) should be able to give you an answer. Also, (this can be a pain) if you give us the impeller diameter (assuming it ain’t mostly gone) thickness and motor RPM we can ball park the head and capacity.

    I have a huge issue with replacing with the same (cross reference chart warning here). What caused the first pump to fail? Was it applied properly?

    My humble opinion is if you have time and enough system information re-size the replacement pump to make sure it is right for the job.

    Flow is easy to figure – Btu’s, pipe size etc. Head is a toughie. Close your eyes to avoid a sales pitch cause this is one of many areas where ECM Smart pumps truly shine. Their operating range is huge so in reality, can cover 99% of all existing “typical” (if there is such a thing) applications, self adjusting to what the system needs.
  • Derheatmeister
    Derheatmeister Member Posts: 1,579


    Why so much corrosion ?
This discussion has been closed.

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