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-   -   Black Tank Flush Port? (http://www.irv2.com/forums/f50/black-tank-flush-port-234688.html)

bjlakatos 02-07-2015 06:49 AM

Black Tank Flush Port?
 
For many years, I have been using the Camco reverse flush device to clean my holding tanks. http://www.amazon.com/Camco-39062-Fl.../dp/B000BUQOAE. Normally it takes about 12min to fill the 35gal tank from the outside. I usually fill and drain 3 times and my gauges will zero out. That said, it does take some time and there are opportunities to make mistakes (ie, leaving black valve and flush valve closed...:whistling:, getting distracted and forgetting it was filling only to have it back up in the outdoor kitchen sink...):sad:

So I purchased this http://www.amazon.com/Camco-40126-To.../dp/B000BUU5TU and it has been sitting there while I contemplate drilling into my black tank. The installation video looks easy enough but lately I have been thinking about the potential downsides and would like your feedback.


My concerns are
  1. If I install it and decide to remove it later, any suggestions on how to plug the hole in the black tank?
  2. Does it work good enough to clear the sensors? The recommended installation has it oriented so it shoots right at the sensor area of the tank.
  3. The external port (that you would hook flush water hose to when cleaning) mount has a bracket to attach to the trailer frame. WHile this is appealing not to have to drill through the camper, the location would be near the existing tank valves which will be lower than the flusher mounted on the tank. I wonder if it will it leak should the the black tank get full (recommended install calls for the flusher to be mounted 2" from the top of the tank)
  4. If there is excess water in the hose that connects the external port to the tank flusher port and it freezes will it burst? and subsequently leak...
  5. My TT has a sealed underbelly. One more opening on the black tank along with the hose connection would be two more opportunities for moisture (stinky or not) to be introduced in the sealed area.
Really, I am not trying to talk myself out of installing it just need to hear some of your experiences. I look forward to hooking it up, opening the black valve and letting it run until the sensors are zeroed! BTW, the reviews on Amazon were good for the device.

lynnmor 02-07-2015 07:08 AM

1. Just put a garden hose cap on it.
2. It probably will work.
3. I'd go even more than 2' even if it means up thru the floor and out the side.
4. Water will freeze, just push anti-freeze thru it to winterize.
5. They aren't sealed anyway, use expanding foam at hose.

Dr4Film 02-07-2015 07:18 AM

My Black Tank has this type of back flush system.

http://beamalarm.com/foretravel-link...fuss-flush.pdf

It is sold by Lakeview RV Supply in Sugarland TX.

The Vacuum Breaker / Check Valve is a key component to preventing any problems with the system.

Dr4Film ----- Richard

puttin 02-07-2015 08:34 AM

bjlakatos,

Is your toilet directly over the top of your black tank? If so, occasionally just use one of those flush wands down the flapper hole. You shoudn't have to use it very often if you only dump when the tank is full. If you have elbows to the tank and toilet is not mounted directly on top then you may want to consider installing your flusher.

bjlakatos 02-07-2015 08:50 AM

Quote:

Originally Posted by puttin (Post 2415431)
bjlakatos,

Is your toilet directly over the top of your black tank? If so, occasionally just use one of those flush wands down the flapper hole. You shoudn't have to use it very often if you only dump when the tank is full. If you have elbows to the tank and toilet is not mounted directly on top then you may want to consider installing your flusher.

Yes it is mounted directly over the tank. I tried the wand last month for the first time and was impressed how well it works--good and fast.

sprayman 02-07-2015 09:08 AM

reviews
 
looks like 29 of 35 were less than 5 *

Jim


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