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Bell & Gossett circulator ID

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Mike Sheppard, Scott Secor and Mr. Holohan helped me the last time I needed help with B & G. Here's another one. This pump is 65 years old and has died. The pump flanges are 8-1/2" apart, so it's not a Series 100 model. Must be a PR (high volume) or HV (high head) series, no? It serves an 8-loop manifold, 1/2" copper loops; no idea what the loop lengths are.

We figured out last time the the dead guy who did the installation probably oversized the pump and I think the same is true for here. A series 100, Taco 007 or a Grundfos 15-55 will probably do the trick.

Any comments?






8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

Two btu per sq ft for degree difference for a slab

Comments

  • Steamhead
    Steamhead Member Posts: 16,902
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    This was on State Supply's site showing a replacement bearing:

    "Bell & Gossett front bearing for B&G model 189101, 189102, 189103,189129, and 189163 bearing assemblies on series HV, 1, 1-1/2, and 2 pumps."

    So that's probably an HV.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    Alan (California Radiant) Forbes
  • hot_rod
    hot_rod Member Posts: 22,263
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    The size and shape of the impeller is a good rule of thumb for determining a circulator type, narrow, large diameter impellers are typically high head, as a 3450 rpm motors.

    Did those older 3 piece circulators ever use 3450 rpm motors, seems 1/6 hp 1750 is most common?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • tim smith
    tim smith Member Posts: 2,765
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    These are higher flow lower head than Grundfos. We stock all the parts for our service work for them still. Bearing assemblies, motors, motor mounts, couplers. Great old pumps. they are 1725 rpm.
  • tim smith
    tim smith Member Posts: 2,765
    edited December 2019
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    My guess is could be the 1-1/2" also which is the hv on chart. I run into a lot of the hv and the 2" 1/6hp.
  • Alan (California Radiant) Forbes
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    Thanks, everyone. I'll let you know how it turns out.
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,548
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    That’s a PR.
    Retired and loving it.
  • ch4man
    ch4man Member Posts: 296
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    all right Dan, without a good look at the volute and of course the impeller, what was the clue to say PR not HV?
    inquiring minds want to know?
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,548
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    I guess muscle memory.
    Retired and loving it.
    Ironman
  • Alan (California Radiant) Forbes
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    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab