Uphill tank system

[bluefever02]

I've been looking on camping world and other places. Can anyone suggest a good system to pump uphill 75 feet at a slight incline.

[wingnut60]

Based on my experience with a FloJet, it will handle the rise/distance. Use plenty of extra water if you have a source available.
Joe

[SoundGuy]

bluefever02 wrote:
I'd say it's between 5-10 feet uphill.

This British ad for the FloJet Waste Macerator indicates maximum head is 6 metres, or ~ 19.5' so as I said earlier you'd be fine pumping up your "slight" incline of 5' to 10' using 75' of 3/4" discharge hose.

[AZDesertRat]

The FloJet chops the solids into smaller pieces but there are still solids that will settle out. Run it into a cup or bowl and you sill see.

And "slight incline" doesn't mean a hill of beans. Is slight a 1% incline, 2% ? Without knowing the height difference over that 75 feet you can't say whether it will work or not. How is that for "clear"? And I also own and use a FloJet.

[SoundGuy]

christopherglenn wrote:
don't go to large on the hose, the larger you go, the lower the velocity of the fluids, and solids will start dropping out. Get enough and even though the pump is on, you will get a clog.

Solids? What solids? :h The FloJet Waste Macerator does just that, macerates solids so there are none, just "water". I've been using my FloJet for 9 yrs now, 50 foot 3/4" hose, no issues whatsoever, wouldn't ever service my tanks any other way. After a few minutes of flushing this is what comes out of my black water tank -

[christopherglen]

don't go to large on the hose, the larger you go, the lower the velocity of the fluids, and solids will start dropping out. Get enough and even though the pump is on, you will get a clog.

[wanderingbob]

It will do it , within reason the larger the hose the easier , in otherr words do not use a 1/2 inch hose .

[bluefever02]

I'd say it's between 5-10 feet uphill.

[SoundGuy]

AZDesertRat wrote:
You need to know the elevation difference between the RV and the final dumping point. The 75 feet horizontal is not the issue but the height may be. Most macerator or chopper type pumps capable of pumping solids or waste do not handle head well.

The OP already said in his first post - "uphill 75 feet at a slight incline" ... how much clearer can that be? A FloJet Waste Macerator will handle this task just fine.

[AZDesertRat]

You need to know the elevation difference between the RV and the final dumping point. The 75 feet horizontal is not the issue but the height may be. Most macerator or chopper type pumps capable of pumping solids or waste do not handle head well.

[rrbowman]

Golden_HVAC wrote:
75 feet of rise is about 40 PSI. Take into account some friction loss for the pipe length, and you are at a much higher pressure.

If it is just 75' of hose, and say 15 - 20 feet of rise, then that can be done with any RV water pump. How much flow are you looking for?

If you only need about 5 gallons per minute, then the VSP pump that is 5.7 GMP and 12 or 24 volt input can work well. That would be a total of around 300 gallons per hour, so it is a significant amount of water.

You can find that pump at CampingWorld.com and the standard Sur flow is rated around 2.5 GPM. Probably only around 2 GPM at 30 PSI - about what will be required for 75' of garden hose going up 15 - 20 feet in elevation.

Good luck,

Fred.

I don't believe he said 75' rise, he stated 75' with a slight incline.

[Bobbo]

I have almost exactly that same configuration. Flojet Macerator works for me.

[SoundGuy]

bluefever02 wrote:
I've been looking on camping world and other places. Can anyone suggest a good system to pump uphill 75 feet at a slight incline.

I gave up on lining up at campground dump stations years ago and use the aforementioned FloJet Waste Macerator Pump to off load both grey & macerated black water here at the house and although my run is 50' and generally in a downhill direction I'd have no hesitation using it to pump 75' with the hose running in a slight uphill direction. For pumping only grey water it's a bit overkill to use a macerator but doing so would allow you to also off load the contents of your black water tank.

[nomad297]

bluefever02 wrote:
But i've seen some people online saying it can handle over 100 feet uphill.

I cannot imagine any situation where somebody would encounter a 100' rise to dump their waste water. I doubt any macerater could manage that.

Bruce

[bluefever02]

If need be couldn't I run a fresh water pump closer to the drain to help the macerator?