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D_E_Bishop's avatar
D_E_Bishop
Explorer
Mar 30, 2018

Steampunk Workshop Macerator Pump

I learned about this hack to build a macerator pump using a garbage disposal and decided since I no longer had my Sewer Solution, I'd try my hand at this. With a couple of exceptions I had to buy the supplies needed so it cost me a little more than $50, more like $105.00. Still not a bad price considering a SS is about $110 with 20' of discharge hose and a macerator pump will run $200 to $350.

I lucked out and there was an ad for a Badger 5 on Craigslist for $40, I offered the owner $30 and she said okay. Got it home and found that the electrical had never been hooked up. The tinned tips were bright and shiny and straight as a pin.

A few changes I made in mine, no copper scrap laying around so I used 1/4" aluminum and added a rubber gasket to ensure a good seal on the discharge side. I didn't have a 3/4" NPT tap on hand so I bought a drill and tap kit on line. I did not like the thought of the threads on the bolts Jake used cutting into the plastic ears on the 3" hose connector. I used SS but with a hex head. 1 1/2" was the first one with a smooth area for the ears to sit on. Cut about 3/4" off the threads.

On 04/08/ we're taking off for a couple weeks, I normally try and dump before leaving on the last day but this time I'm going to refrain from dumping so I can see if the whole thing will work for me. I do have a backup in that if it doesn't work, I can dump at the storage yard.
  • Nice project. Chances are, a new or lightly used quality garbage disposal is going to last longer and need less maintenance than a Flojet. It's about the difference in construction.
  • D.E.Bishop wrote:
    I just don't understand why you have to tear down another's equipment.


    SoundGuy wrote:
    No need to get your knickers in a knot, no one is "tearing down" anything ... if this works for you then good on ya. :B


    D.E.Bishop wrote:
    Well SoundGuy, I just did a search for Macerator Pump in the advanced search function and found one thread that mentioned a couple of times that folks don't know why you need one in a campground.


    Normally I don't either as our trailer's black tank's 30 gal capacity is sufficient for quite awhile with just two of us using the camper. However, the point is that by having my macerator on hand I always have the option of servicing my black tank while camping should the need ever arise as it has on a couple of occasions. My primary use is at home as I never stop and line up at a campground dump station. :B

    D.E.Bishop wrote:
    So my point of view is just a little different from yours.


    Exactly - just a different point of view. No one is raining on your parade just because they see the issue a little differently. :R
  • More horsepower should push the fluids with more pressure. There are 1/3 - 1 HP disposals and some turn a lot faster than others.

    I've replaced a lot of Badger disposals due to leaking/rust and have switched to 1 HP Waste King L-8000 in stick houses. The Badger turns at 1725 RPM and the Waste King at 2800 RPM. There is a huge difference in flow between them.

    I'm interested in pumping 200-300 feet and don't care about the power, 120VAC is fine.

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