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Old 03-09-2014, 11:34 AM   #57
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Camping World says manufacturer information is the max distance for a 3/4" hose is 50', 5/8" hose max is 25'. It doesn't address height or at least not in the Q&A.
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Old 03-09-2014, 08:36 PM   #58
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The weather here was great today so I got a chance to de-winterize and check out all of the systems on the AS. Also checked out the flow jet. Pumping clean water out of the gray tank through a 5/8" 50' long hose it pumped 6 gallons per minute. I then tried it pumping to a height of 10 ft, also 6 gallons per minute. Still pumping through the 5/8" 50' long hose I elevated the end of the hose to 18' high. I was not able to measure the rate but the flow was still quite acceptable, as per the photo. Bear in mind this was with clear water, not black fluids. With the proper amount of fluid in the mix I don't think it would be a problem to pump to a lift of 20', it might just be somewhat slower.
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Old 03-09-2014, 08:52 PM   #59
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The weather here was great today so I got a chance to de-winterize and check out all of the systems on the AS. Also checked out the flow jet. Pumping clean water out of the gray tank through a 5/8" 50' long hose it pumped 6 gallons per minute. I then tried it pumping to a height of 10 ft, also 6 gallons per minute. Still pumping through the 5/8" 50' long hose I elevated the end of the hose to 18' high. I was not able to measure the rate but the flow was still quite acceptable, as per the photo. Bear in mind this was with clear water, not black fluids. With the proper amount of fluid in the mix I don't think it would be a problem to pump to a lift of 20', it might just be somewhat slower.
Thanks for taking the time to do that. This is good to know and useful information.

Ken
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Old 03-09-2014, 08:59 PM   #60
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Since I now have a sewer solution and a macerator, for different circumstances, I am going try to make the proper fittings to allow me to use the sewer solutions hoses with the Macerator.

Ken
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Old 03-10-2014, 07:20 AM   #61
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Yes SSTAR, thank you very much for taking the time to do this. Excellent information.
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Old 03-10-2014, 08:35 AM   #62
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Older Airstreams like mine are rather low to the ground, and the dump port for the tanks is lower yet. The slinky connects and then has to connect to the sewer port at the camp ground with a 90 degree elbow. This usually leaves water in the slinky. I was very tired of lifting my slinky to get it to drain.

I now use the Thetford Sani Con and find it works much better. I can drain my black water, shut the pump off, open my gray water valve, and allow the gray water to back flush into the black tank. Then I can pump out the gray water and get pretty good cleaning action on both tanks. But most importantly I can pump the water "up hill" to the sewer connection. I do have to be careful to either thread on the Sani Con hose to the sewer pipe, or weight it down sufficiently to keep it from blowing off. I would hate to pump black water all over the neighbor's campsite!

Airstreams are low, and many camp grounds have sewer pipe connections that stick 8" above ground level. The Sani Con, or a macerator pump solves this "stuff won't run uphill" problem.

I do find my Sani Con bayonet "ears" too weak. I have broken two of the pump connection plastic ears off, and have difficulty getting the replacement part. Thetford is hard to do business with. And I do use a 45 degree fitting between the dump port and the Sani Con. When the pump is mounted horizontally, I find I trap water between the dump valves and the Sani Con. I don't like spilling a quart of water when I disconnect the pump. The 45 degree angle allows the pump cavity to clear itself.

Bottom line, a macerator pump is better than a slinky for me.

David
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Old 03-10-2014, 11:13 AM   #63
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Camping World says manufacturer information is the max distance for a 3/4" hose is 50', 5/8" hose max is 25'. It doesn't address height or at least not in the Q&A.
FloJet RV Waste Pump Kit - Xylem 18555000A - Drain & Flush Systems - Camping World
I think the Mfg may be somewhat conservative to the operating capacity of the Flow Jet. I had reservations as to how it would work when I bought it, but have been 100% happy with the results. Again, I have only used it when we arrive back at home port. My septic outlet is 44' from where I store the trailer so a 50' length of hose works fine. In the next few weeks I plan to run a permanent 2" pvc line underground to discharge through. If you have a Thetford fitting on your trailer you will need a crossover to Valterra, I also used a clear connection so that I can monitor the consistency of the fluid. As mentioned in another post, a 45 deg connection would be nice to avoid any spills on the ground.
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Old 03-10-2014, 12:56 PM   #64
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You are referring to the Thetford type fitting. It is a different style of connector, but it is the same size (3").

I agree it is a good idea to keep an adapter from one to the other on board. You never know what you might run up against.
OK, so now there are Thetford and Valterra fittings on a 3" stinky slinky connection? I know there is a Thetford commode in the trailer, does that mean the connection on the sewer is Thetford? The Camco 45 degree clear elbow I found at Amazon doesn't mention either fitting but there is also a Valterra Adapter 45 degree clear fitting.

I did find a comparison that says the Thetford is 96 mm between the connecting prongs and the Valterra is 89 mm. Is the brand stamped on the sewer connector? Sounds like a box of various adapters is going to be necessary.

Just when I thought I understood, I don't.
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Old 03-10-2014, 12:58 PM   #65
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Valterra vs. Thetford

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Old 03-10-2014, 08:06 PM   #66
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When I bought my AS the cap was missing for the septic. Instead of buying a Thetford replacement cap I just bought the one adaptor then all Valterra fittings and hoses, so that the fittings on the AS and my SOB will be compatible. (also my son's SOB ). You can usually find the Valterra compatible fittings and hoses at Walmart or any RV supply.
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Old 03-10-2014, 08:10 PM   #67
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When I bought my AS the cap was missing for the septic. Instead of buying a Thetford replacement cap I just bought the one adaptor then all Valterra fittings and hoses, so that the fittings on the AS and my SOB will be compatible. (also my son's SOB ). You can usually find the Valterra compatible fittings and hoses at Walmart or any RV supply.
OK, thanks! Adding it to the list
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Old 03-10-2014, 09:00 PM   #68
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Heyyy, thanks! I was within a ¼"!
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Old 10-15-2015, 12:59 PM   #69
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Installing macerator this week. It will be permanently mounted to both the grey, black tanks. No more 3" slinky warm.
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