Uphill tank system

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 just noticed that I didn't put in that im looking for a system to pump waste, mostly grey water uphill.

Have you looked at flojet macerator?

http://www.pumpvendor.com/media/flojet/Flojet_18555-000A.pdf

Looks marginal for uphill use. Max level hose 50', max run time 15 minutes.

If it is a 20+ foot rise you could be looking at 1/2 hp+ 120v macerator that may need a pit that you dump in.

http://www.sumppumpsdirect.com/Zoeller-M267-Sewage-Pump/p3754.html

I saw a thetford system on camping world that said it could handle 21 feet. But i've seen some people online saying it can handle over 100 feet uphill.

I have a portable FloJet Macerator that I use mainly when visiting sister ion FL.

Clean out is almost 100' away with a 2' rise.

I use 3/4" garden hoses and pump black tank, grey & galley.......120 gallons

Check various on-line for best pricing

PPL
Adventure RV
Dyersonline

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

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 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.

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

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.