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Old 06-02-2016, 11:51 PM   #11
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I strenuously disagree about a blackwater macerator pump. I would never even consider owning a rig without one. A proper macerator system is completely sealed--you just remove a little cap at the end of the hose. No potential for contact with sewage and no storage of disgusting slinky hoses.

If you are worried about reliability, it is not difficult to install a redundant gravity feed dump for emergency use. Some rigs come with one. Try a forum search for "dual dump" and sip the firehose.
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Old 06-03-2016, 12:31 AM   #12
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Avanti;

Glad you weighed in on this. I have absolutely no experience with that type of pump. It just sounded a bit odd that a pump would be preferred over a system without. My thought was "Just something else to go wrong", but your explanation makes sense. Thanks for the info.
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Old 06-03-2016, 09:58 PM   #13
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"Strenuously disagree?" Wait until you have a macerator failure. They are not that durable.
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Old 06-03-2016, 11:15 PM   #14
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"Strenuously disagree?" Wait until you have a macerator failure. They are not that durable.
Haven't had a failure in 11 years of active B-vanning, and I have a dual-dump backup if it ever happens. From what I hear second hand, most failures are stuck impellers that can be fixed by turning the little screw with a screwdriver.

Gravity dumping reminds me of using the outhouses at summer camp.
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Old 06-03-2016, 11:29 PM   #15
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I would agree with Avanti, we would not get a B without a macerator dump system. That said, I put on a redundant gravity dump system into our Roadtrek C190P, as there is a high likelyhood that sooner or later the pump will fail. How easy the pump is to change, and how messy it would be are valid considerations and would be good to look at on any model that has a macerator.

Gravity dump always reminds me of "cousin Kenny" on Christmas Vacation, while the pump is very clean, fast, and easy.
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Old 06-03-2016, 11:30 PM   #16
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"Strenuously disagree?" Wait until you have a macerator failure. They are not that durable.
Once you got a macerator, you started raving about how wonderful they are. Something change, have a failure?
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Old 06-04-2016, 12:36 AM   #17
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I think I may be missing something here.

This is just for the sake of discussion, but as far as I'm thinking, Dumping is dumping. Stuff the open end of the hose into the hole, pull the lever, or flip a switch, and there goes the poop.

Why would you want an extra pump if you don't need one? I have a pump on my shower drain due to the tank configuration, but if the tank was placed differently, I'd just as soon not have the pump.
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Old 06-04-2016, 01:01 AM   #18
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I think I may be missing something here.

This is just for the sake of discussion, but as far as I'm thinking, Dumping is dumping. Stuff the open end of the hose into the hole, pull the lever, or flip a switch, and there goes the poop.

Why would you want an extra pump if you don't need one? I have a pump on my shower drain due to the tank configuration, but if the tank was placed differently, I'd just as soon not have the pump.
Most of the systems with gravity use the standard "stinky slinky" loose hose you have to hookup to the connector that will have some goop left most likely, you dump, then you have to rinse the hose, get it back into the tube, etc. With the macerator the hose is always attached and has a valve at the end. Open your dump valve, nothing comes out until the pump runs. Hold the hose and valve over the dump pipe, open the valve and turn on the pump. When the tank is empty, open the other dump valve. When that is empty close the valve on hose, no rinsing the hose. Close the dump valves and put the hose in the compartment. Much, much faster and cleaner than the gravity setup. 1/3 the time and 1/10 the mess.
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Old 06-04-2016, 02:04 AM   #19
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Agree on the value of a macerator, no problems on our 08 RS macerator. I dump the black then leave the valve open and open the grey to backfill the black and get some rinsing of the tank. Close the grey and dump the black again. May repeat it again sometimes. Close the black and open the grey and dump the grey. Stow the hose and your done.
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Old 06-04-2016, 06:23 PM   #20
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This has nothing to do with pump or no pump, but I saw a tip (can't remember where) that they said to drop a couple of dishwasher soap pods in the tank, and drive for a bit to slosh it around. I tried it, and my grey water LED indicator sprung back to life. (It didn't work from day 1) Not so lucky with the Black tank, I think something may have a bad connection. But the pods do seem to work nicely, and the occasional traces of odor disappeared.
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