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 > Commercial macerator or homemade from garbage disposer

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Dave H M

IL

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Posted: 01/02/20 06:02am Link  |  Quote  |  Print  |  Notify Moderator

[emoticon] Hope some folks learned something about garbage disposals. Dang what a nifty idea.

GDS-3950BH

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Posted: 01/02/20 06:25am Link  |  Quote  |  Print  |  Notify Moderator

NRALIFR wrote:

Got it. It’ll never work.

Centrifugal force = bunk.

If you’d ever played with one on a bench, you’d know that they don’t suck worth a dam, but as long as the flow of liquid into the top is continuous, they sure as heck will pump.

[emoticon][emoticon]


Got it, a garbage disposal has enough Centrifugal force to overcome 4' of head, including the additional friction from a 100' run of 5/8" or 3/4" hose.

NRALIFR

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Posted: 01/02/20 06:44am Link  |  Quote  |  Print  |  Notify Moderator

Must be, because with rv2go’s post I could now point to four individuals who claim that they do.

They all are lying?

There’s rv2go’s post, there was one on some RV brand forum site that I couldn’t view the pictures cuz I’m not a member, and there were at least two on the steampunk workshop site I linked to.

There were also a couple of adamant deniers on the linked site, and I liked the site owners response to one of them: “This is clearly not the website for you.”

He was probably making that Jedi hand wave motion in the air, too.

[emoticon][emoticon]

* This post was edited 01/02/20 07:06am by NRALIFR *


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GDS-3950BH

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Posted: 01/02/20 07:31am Link  |  Quote  |  Print  |  Notify Moderator

NRALIFR wrote:

Must be, because with rv2go’s post I could now point to four individuals who claim that they do.

They all are lying?

There’s rv2go’s post, there was one on some RV brand forum site that I couldn’t view the pictures cuz I’m not a member, and there were at least two on the steampunk workshop site I linked to.

There were also a couple of adamant deniers on the linked site, and I liked the site owners response to one of them: “This is clearly not the website for you.”

He was probably making that Jedi hand wave motion in the air, too.

[emoticon][emoticon]


Lots of people claim lots of things, that does not mean squat.

Of coarse it will work with the disposal sitting on the ground lower than the tank, and the discharge hose level with the tank supplying it at a higher elevation. But I'm calling BS on the disposal overcoming 4' of downstream head. And that's with a 10' discharge hose let alone 100' that is claimed in your link. Centrifugal force my rear end.

A garbage disposal can't do that, even on Dagobah with Yoda putting it all together.

time2roll

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Posted: 01/02/20 08:38am Link  |  Quote  |  Print  |  Notify Moderator

I would not go down the path of the garbage disposer. Get the right stuff.


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cooldavidt

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Posted: 01/02/20 08:55am Link  |  Quote  |  Print  |  Notify Moderator

Interesting how posts of simple questions devolve int who’s right. Enough said on this one !

??

mikestock

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Posted: 01/02/20 08:57am Link  |  Quote  |  Print  |  Notify Moderator

cooldavidt wrote:

A friend has a macerator on an Airstream. It is at ground level and the inlet is large diameter. I think their Airstreams has shower and bathroom sink plumbed through the black tank to provide plenty a liquids. Not sure if that is a common practice.


Yes. That's Airstream. Most have 100 gal. capacity. Partly a good idea and partly bad.

mikestock

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Posted: 01/02/20 09:25am Link  |  Quote  |  Print  |  Notify Moderator

GDS-3950BH wrote:

NRALIFR wrote:

Must be, because with rv2go’s post I could now point to four individuals who claim that they do.

They all are lying?

There’s rv2go’s post, there was one on some RV brand forum site that I couldn’t view the pictures cuz I’m not a member, and there were at least two on the steampunk workshop site I linked to.

There were also a couple of adamant deniers on the linked site, and I liked the site owners response to one of them: “This is clearly not the website for you.”

He was probably making that Jedi hand wave motion in the air, too.

[emoticon][emoticon]


Lots of people claim lots of things, that does not mean squat.

Of coarse it will work with the disposal sitting on the ground lower than the tank, and the discharge hose level with the tank supplying it at a higher elevation. But I'm calling BS on the disposal overcoming 4' of downstream head. And that's with a 10' discharge hose let alone 100' that is claimed in your link. Centrifugal force my rear end.

A garbage disposal can't do that, even on Dagobah with Yoda putting it all together.


I am not nieve enough to expect the inlet to suck any negative pressure. My outlet is well above ground level and I don't expect the dump to ever be above the disposer outlet. In any near level situation, the inlet will be, 6 " to 10" directly below the dump outlet of the motorhome.

I have personally watched a fellow camper use the garbage disposer idea and didn't see any problems and he said he had none. At the time I was just a casual observer and not planning to purchase any macerator, myself. He was not trying to pump uphill and I can't see any situation where I would, either.

From the responses I have seen here, it looks like all the objections to the homemade thing are based on speculation. I was hoping to hear from someone who has tried both and had some real experience.

rv2go wrote:

I have been using a homemade garbage disposal setup for over 15 years while parked for months at my daughters house. I pump 75 feet thru a 3/4" hose. I am hooked up to city water so it's no problem to rinse the Black tank.
Also, what I like about my setup is that the gray water will drain as used.


Appologies to rv2go. I didn't read this post earlier.

* This post was edited 01/02/20 05:02pm by mikestock *

ScottG

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Posted: 01/02/20 10:53am Link  |  Quote  |  Print  |  Notify Moderator

NRALIFR wrote:

Got it. It’ll never work.

Centrifugal force = bunk.

If you’d ever played with one on a bench, you’d know that they don’t suck worth a dam, but as long as the flow of liquid into the top is continuous, they sure as heck will pump.

[emoticon][emoticon]


I had a plumber tell me that he finds foods scraps on the roof of houses where he's called to clear the drain line. So they will pump pretty good!

The one thing that makes me wonder how well this would work is that a Macerator cuts and grinds where a disposal pulverizes has no sharp parts for cutting.


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2oldman

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Posted: 01/02/20 11:12am Link  |  Quote  |  Print  |  Notify Moderator

..

* This post was edited 01/02/20 11:20am by 2oldman *

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