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Old 11-08-2014, 03:11 AM   #11
bsmith0404
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Here's a youtube video with the air compressor and non air compressor method following the same steps outlined above. The only thing I would change to the steps listed above, drain the black tank before the gray tanks. The water in the gray tanks will help flush the sewer pipe and your hose of any nasties or TP left behind.

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Old 11-08-2014, 05:28 AM   #12
Desert185
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I made an air to water adapter for blowing out the system rather than using the adapter with a "valve stem" where you have to hold the air hose on it.

Male 3/4 hose brass fitting to 1/2 NPT male.

1/2 NPT female to 1/4 NPT female brass coupler.

1/4 NPT male air fitting (I use the industrial, brass version).

Screw it all together with teflon tape, attaching a water pressure regulator to the hose end.

Screw the water pressure regulator into the trailer's city water port.

Attach air hose (air pressure now doesn't matter, but I still turn it down to 40-50 PSI).

Turn on air and open faucets one at a time, near to far sequence, including flushing toilet and outside shower.

Attach to black tank flush and blow that out.

Simplifies the process.

Edit: all this sfter draining the HW heater and bypassing it.
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-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
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-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
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Old 11-08-2014, 05:46 AM   #13
bsmith0404
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Quote:
Originally Posted by Desert185 View Post
I made an air to water adapter for blowing out the system rather than using the adapter with a "valve stem" where you have to hold the air hose on it.

Male 3/4 hose brass fitting to 1/2 NPT male.

1/2 NPT female to 1/4 NPT female brass coupler.

1/4 NPT male air fitting (I use the industrial, brass version).

Screw it all together with teflon tape, attaching a water pressure regulator to the hose end.

Screw the water pressure regulator into the trailer's city water port.

Attach air hose (air pressure now doesn't matter, but I still turn it down to 40-50 PSI).

Turn on air and open faucets one at a time, near to far sequence, including flushing toilet and outside shower.

Attach to black tank flush and blow that out.

Simplifies the process.
You just made my head spin, sounds like a nice setup though.
I just took a 10' hose and cut it off about 4'. inserted the air compressor connection and secured with a hose clamp. I wheel the air compressor out to the camper, set the pressure regulator for 40 psi and connect the hose. When I'm done with that, I remove the air compressor connection from the hose, connect the hose to the winterize fitting (water pump bypass line on some models) and put the end of the same hose into the anti-freeze jug. I cut the hose at 4' so I can set the jug on the ground. When I'm all done, I reattach the air compressor fitting and put the hose in the basement storage container with the rest of my water hoses. One small piece of equipment that does it all and is easy to find.

I used to have the valve stem style, every year it seemed like I was searching for it trying to remember where I put it so "it wouldn't get lost"
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Old 11-08-2014, 05:55 AM   #14
Desert185
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There's more than one way to "blow" a trailer. The brass adapter just seems to fit well with my methods. The Cummins also smiles in approving acknowledgement.

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-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
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Old 11-08-2014, 06:21 AM   #15
theeyres
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I just use antifreeze. I don't have an air compressor and just don't see a need for that step. When you pump antifreeze through the system and make sure you open every valve until it flows red then you have replaced all the water with antifreeze. Been doing it for 40 years where it gets to 0 and the only problem I've had is when I forgot to flush the toilet. Fortunately it just broke the valve, not the toilet.
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Old 11-08-2014, 06:23 AM   #16
bsmith0404
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Originally Posted by Desert185 View Post
There's more than one way to "blow" a trailer. The brass adapter just seems to fit well with my methods. The Cummins also smiles in approving acknowledgement.

Ain't that the truth? BTW, you made me start thinking (dangerous) so I did some research. Water pressure regulators do not work to regulate air pressure, something about compressibility of air making the design of the two very different. So no need to install your water regulator, but still a need to turn down the air compressor.
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Old 11-08-2014, 08:43 AM   #17
Desert185
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I wondered about that, but never took the time to research it.
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Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
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