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Need recommendation for dewatering pump

Ken C.
Ken C. Member Posts: 267
I'm looking to buy a pump that I will mostly use for draining water heaters. I'd rather NOT go with one of the small "pony" pumps because of their loud, high-pitch whine, plus, they pump slowly.

I was at Grainger today and saw a Dayton utility pump with a 1/2 hp motor. This pump looked just like ones I've used before working for other companies, and I liked them because they are fast and quiet. The problem is, the Grainger catalog said they are only rated up to 104 degree water temperature. Hotter water will deteriorate the seals, the counterman told me.

The only transfer pump rated up to 140 degree water their catalog showed was a Little Giant pump (one of the small, loud, whiny pumps I hate).

I'm wondering what to do, because I assumed that the larger style transfer pumps (Dayton, Wayne, Liberty, etc.) could handle domestic hot water without damaging the pump. I don't do a lot of water heaters (maybe 8-10 a year), but I want whatever pump I buy to last many years.

Can anyone recommend a suitable pump for changing out water heaters? And are there any pumps that will handle draining a boiler (180-190 degree temps)?



  • Larry C_9
    Larry C_9 Member Posts: 7
    How about a circulator pump?

    How about using a hot water heating system circulator pump?
  • JaredM
    JaredM Member Posts: 57

    I have one of the Dayton and one of the Liberty transfer pumps and use it for water heaters and boilers all of the time. They have worked just fine....the Dayton one is at least 5 years old.

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  • clammy
    clammy Member Posts: 3,110
    cheap pumps

    I have used all types of pony pumps including the metal gosset type but found that with the meatl gosset type very hot water would tend to get damaged now i use a cheapo plastic type the trick is to give the inlet side of the pump a shot glass of vegatable oil and your good to go ,i have used my cheapo for about 10 to 15 years now and have attached it to a round piece of plywood with a switch which flips over to become a lid for a bucket which carries all my small hoses (dishwasher type)i have my dip tubes to drain certain indirect tanks and for the 40 or 50 bucks when she dies i just get a new one peace and good luck clammy
    R.A. Calmbacher L.L.C. HVAC
    NJ Master HVAC Lic.
    Mahwah, NJ
    Specializing in steam and hydronic heating
  • adambuild
    adambuild Member Posts: 414

    After killing another pony pump, I went on ebay and bought a factory reconditioned PC4 from Wayne for $90 with shipping and the thing is great! Fast! No problem with even 180* boiler water! Here's the one I bought: 270088182739 (cut and paste this item number on ebay)

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