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Old 06-15-2014, 07:56 AM   #1
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Mystery shower part

Can anyone identify this thing? It located between the water outlet and the hand shower hose. I presume it's either an aerator, or backflow preventer, or hose drain or something. The rubber washer/diaphragm has perished, and I have not been able to find a replacement (likely because I don't know what to look for)

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Old 06-15-2014, 10:11 AM   #2
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It is a back flow preventer. In the event of a failure of pressure to the shower hose, this allows air to be sucked into the incoming line, rather than anything from the shower hose. The assumption is that the shower hose might be laying in a pool of contaminated water, unusual, but possible.
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Old 06-15-2014, 10:11 AM   #3
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I think it is an aerator/flow restrictor. If yours is a moen faucet you should be able to find parts on line.
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Old 06-15-2014, 11:48 AM   #4
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Vacuum breaker
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Old 06-16-2014, 03:15 PM   #5
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Thanks folks. Indeed Moen calls it a vacuum breaker. Replacements are easy to find, but replacement parts seem to be non-existant.

I guess when you're washer rots out, you have to pony up the $30 for the whole thing.
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Old 06-16-2014, 03:17 PM   #6
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Balogna.... Ace hardware, choice of colors $6.00
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Old 07-17-2014, 01:17 PM   #7
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SO where can one get the entire fitting quickly? Somehow I broke the fitting and have an upcoming trip planned….

My trailer is a 1991 Excella, shower wand is an Alsons, need the fitting that is shown earlier in this post that joins the shower hose to the wall connection….
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Old 07-17-2014, 02:55 PM   #8
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My started leaking as well. I took mine off, screwed the hose back on and everything works just fine. That was a year ago. I have a 1997 excella 1000.

I would not worry about replacing.
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Old 07-17-2014, 04:18 PM   #9
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That's what I did, Bruce. I think it is a code thing to prevent the possible contamination of the fresh water tank from shower gray water, but that could only occur if the shower valve were on, the wand were laying in a pool of water in the shower floor, and there was a complete loss of pressure, I.e the pump failed or was off. I decided that was a chance I could take.

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Old 07-17-2014, 04:44 PM   #10
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Tightening the fitting is not an option - my fitting is broken - I need a replacement…….

Anyone?

I called my local Airstream dealer & they say it will be 2 weeks…...
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Old 07-17-2014, 04:51 PM   #11
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A year or so ago this same item came up. Here is what I wrote then:

"One of the least expensive replacements we found (and bought) is the Hansgrohe External Vacuum Breaker which is listed on Amazon and probably elsewhere. It is a good looking replacement for what you have."

I just checked on Amazon and they still have it listed for $15.22.

Tim
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Old 07-18-2014, 12:24 PM   #12
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Is your hose fitting still ok? If so, then see post #8. You REALLY don't have to have it.
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Old 07-18-2014, 02:02 PM   #13
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Quote:
Originally Posted by Al and Missy View Post
That's what I did, Bruce. I think it is a code thing to prevent the possible contamination of the fresh water tank from shower gray water, but that could only occur if the shower valve were on, the wand were laying in a pool of water in the shower floor, and there was a complete loss of pressure, I.e the pump failed or was off. I decided that was a chance I could take.

Al
If it were only the possibility of contaminating your own fresh water tank what you did would be your business. However, if you are connected to any public water supply (home, campground etc.) and the unlikely events occur, you risk contaminating the public supply the water to others around you.

Yes, the risk is small but the plumbing codes are written because enough potential of it happening is enough to make the devices required for everyone's protection.

I once lived in a mobile home part, up near the top. The pressure in the water system was very marginal. In the evenings, it was common to open a tap in the bathroom and have no water come out at all, but you could hear the air being drawn back into the pipes (water flowing out of my unit to ones lower in the park). With no back flow preventer (vacuum breaker) any contaminated water could have been drawn into the park water system.

In addition, the next owner of a rig which has had the device removed or disabled may not have the same understanding of systems and not be aware that there is any possible cross contamination.

It is a simple, easy to replace device which should not be eliminated.
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Old 07-18-2014, 02:39 PM   #14
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Quote:
Originally Posted by idroba View Post
If it were only the possibility of contaminating your own fresh water tank what you did would be your business. However, if you are connected to any public water supply (home, campground etc.) and the unlikely events occur, you risk contaminating the public supply the water to others around you.

Yes, the risk is small but the plumbing codes are written because enough potential of it happening is enough to make the devices required for everyone's protection.

I once lived in a mobile home part, up near the top. The pressure in the water system was very marginal. In the evenings, it was common to open a tap in the bathroom and have no water come out at all, but you could hear the air being drawn back into the pipes (water flowing out of my unit to ones lower in the park). With no back flow preventer (vacuum breaker) any contaminated water could have been drawn into the park water system.

In addition, the next owner of a rig which has had the device removed or disabled may not have the same understanding of systems and not be aware that there is any possible cross contamination.

It is a simple, easy to replace device which should not be eliminated.
You are absolutely correct in all your statements.

However consider this: In order for your scenario to happen, the shower head would have to be laying in a full shower pan, which means a full grey tank(40+gallons), no pressure in the water system, AND travel UPHILL 3 feet to an OPEN shower valve.
Now I will submit all 4 conditions could happen in the universe, however there are some physics at work here along with bureaucratic BS. I have yet to see or hear of water or any liquid move upwards through a vessel without pressure or a draw. All 4 conditions must be met for that to happen. Highly unlikely.

When he sells the trailer he can replace it.

His original request was "What can I do to go on my trip?"-Answered.
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