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Old 03-24-2010, 11:17 AM   #1
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1966 22' Safari
Dunstable , Bedfordshire
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Can someone identify this for us please?

We have a steady leak from this fitting which is located in the lower part of the linen cupboard, left rear. We think it may be the pressure release valve on the cold water supply but it only leaks when the water heater is alight. We find this a bit confusing!

As new and completely novice owners of a 1966 Safari on a steep learning curve we failed to winterize adequately and also have a burst pipe at the back of the toilet. Could the leak from the fitting also be frost damage?

Our supplier has suggested removing the fitting as part of the repair. Can you advise regarding the implications of this. We are in the UK and won't be able to use the city water connection facility but like to retain the ability to air purge the water system for next winter.

We are so glad we found this Forum, we've learnt so much already and are grateful for any adivce.
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Old 03-24-2010, 11:57 AM   #2
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1966 22' Safari
Weatherford , Texas
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Anti-siphon valve

We have a similar part in our '66 Safari. When we rebuilt our water system two years ago, I had the part identified and knew which water line it was in. Memory has faded a little since then, and I'm not where I can access the trailer right now.

As I remember it, that part was installed in the water line that served the toilet or the spray nozzle intended for cleaning the toilet. Its purpose is to prevent backflow of contaminated water into the fresh water system. It's called an anti-siphon valve.

I can't imaging why it would leak, unless there is freeze damage in the water line it protects.

Hopefully there's someone on the forums that knows more than I do. Good luck.
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Old 03-24-2010, 12:10 PM   #3
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1955 22' Flying Cloud
Boulder Creek , California
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Welcome to the forum T&E10876,
Mimiandrews is correct. It is an anti-siphon valve in the toilet flushing line. It most likely got split during the freeze you mention. Removal is necessary, as is replacement. It shouldn't be hard to find a compatible one.

I have '64 Safari, which had a different valve, in a different location. Mine was originally on the deck behind the toilet seat.

Best to you,
Rich the Viking
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Old 03-24-2010, 12:29 PM   #4
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Quote:
Originally Posted by T&E10876 View Post
We have a steady leak from this fitting which is located in the lower part of the linen cupboard, left rear. We think it may be the pressure release valve on the cold water supply but it only leaks when the water heater is alight. We find this a bit confusing!

As new and completely novice owners of a 1966 Safari on a steep learning curve we failed to winterize adequately and also have a burst pipe at the back of the toilet. Could the leak from the fitting also be frost damage?

Our supplier has suggested removing the fitting as part of the repair. Can you advise regarding the implications of this. We are in the UK and won't be able to use the city water connection facility but like to retain the ability to air purge the water system for next winter.

We are so glad we found this Forum, we've learnt so much already and are grateful for any adivce.
That part is called a "vacuum breaker".

It's use, by Airstream, was discontinued over 40 years ago.

Andy
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