Black tank flush question

[cwbysfan76]

Hi again, so on my 2015 jayco eagle there is a black tank flush connection. My question is do I need to use a pressure regulator on that line. I currently use one but it just doesn't seem like much water / pressure is going into the tank to get the job done.

[Xboaters]

Originally Posted by cwbysfan76

Hi again, so on my 2015 jayco eagle there is a black tank flush connection. My question is do I need to use a pressure regulator on that line. I currently use one but it just doesn't seem like much water / pressure is going into the tank to get the job done.

Quick answer is no. The flush line is basically open at the tank end and does not build much pressure at all.

[2edgesword]

At the other end of the black tank flush inlet is a sprayer and from there the water is going out of the open black tank dump line. I think there would have to be some monstrous pressure in the waterline to cause any problem in the black tank flush line between the inlet and the sprayer.

[CAG]

I don't use one and never have.

[Nathan S.]

Originally Posted by CAG

I don't use one and never have.

X2

[SB_James]

You actually want the high pressure water to flush the tank as thoroughly as possible.

[HappyFeet]

as other have said, no it is a open line, this way is a better rinse

[Thomson]

I blew out the cheap plastic backflow preventer flushing the black water tank. It ran water all over everything around the wall where it was hidden. Ever since then we have used the pressure reducer and watch the clear pipe. Takes longer, but no more water inside

[Mopar_Earl]

Originally Posted by Thomson

I blew out the cheap plastic backflow preventer flushing the black water tank. It ran water all over everything around the wall where it was hidden. Ever since then we have used the pressure reducer and watch the clear pipe. Takes longer, but no more water inside

Those should be removed and an inline brass one installed at the backside of the hose connection. The one you speak of will fail no matter what you do. It's just a ticking time bomb and very poorly made and just a bad design. I had one fail and I converted it and every unit I bought since.


Earl

[WeRJuliian]

Originally Posted by Thomson

I blew out the cheap plastic backflow preventer flushing the black water tank.

Are those fitted on all models?
Wondering if I should go and look for one on our TT (Jayfeather Ultralite19xud)...

Thanks
IanP

[Mopar_Earl]

Originally Posted by WeRJuliian

Are those fitted on all models?
Wondering if I should go and look for one on our TT (Jayfeather Ultralite19xud)...

Thanks
IanP

Yep, industry standard for 5th wheels for a number of years, unsure of travel trailers.

Earl

[Xboaters]

Originally Posted by Mopar_Earl

Yep, industry standard for 5th wheels for a number of years, unsure of travel trailers.

Earl

Where do you get the brass ones?

[Mopar_Earl]

Originally Posted by Xboaters

Where do you get the brass ones?

Any RV place or online. Amazon probably has them. I always got them at a local RV place for a few bucks. Thread it on the the back of the hose connection and adapt it to push connect pex. Remove the loop and run straight to the tank. Or install directly in place of the cheap will fail valve.


Earl

[Anazeteo]

No! Key point is make sure your valve is open. I flush my often. I have it down to a science. I dump my black tank(s) then close the valve and fill each tank with water for 3 minutes. Then I open the drain valve and force flush the tanks. I do this 3-4 times.