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Old 02-27-2014, 05:53 AM   #15
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I appreciate all the input.
\Unfortunately, virtually all manuals are written by the engineers who develop the system, and are never reviewed by new users.
I think it's a safe bet that the plumbing system is a retrofit and not Airstream original so the manual wouldn't help you anyway. I say that because you do not have ball valves with lever, oval, or wingnut-style handles, where "handle in line with the pipe" equals on, and "handle crossways to the pipe" equals off, and all you need is a quarter-turn to go from fully open to fully closed. Instead you have a gate valve with a round handle, that you can't tell at a glance is open or closed, and requires several full turns to go from open to closed.

If you rework your plumbing system, use ball valves exclusively; get rid of the gate valves.
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Old 04-03-2014, 07:50 PM   #16
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The valves you show in the first post look just like the valves in my 1979 MH. I think they are original. The black tubing gets old and hard but it doesn't fail. The grey fittings got very brittle and one by one they failed. After several repairs I ended up replacing all the piping with pex. Keep an eye on those fittings, watch for leaks!
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Old 04-04-2014, 06:03 AM   #17
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The valves you show in the first post look just like the valves in my 1979 MH.
I stand corrected. Thank you. I personally think that ole81 would be well-served by replacing his valves with ball valves if he redoes his plumbing, just for ease of operation; there's a reason why they became standard on later-model RVs.
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Old 04-05-2014, 03:22 PM   #18
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Oooops!
I made a mistake.....
I removed the hoses from the 12v pump and some time later realized that one fitting appears to be a check valve....but did not note whether it was located at the inlet or outlet of the pump.

Any help would be appreciated.....

Thanks
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Old 04-05-2014, 04:01 PM   #19
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I removed the hoses from the 12v pump and some time later realized that one fitting appears to be a check valve....but did not note whether it was located at the inlet or outlet of the pump.
I believe the check valve is on the outlet side, installed so that water will flow out from the pump, but not back into it.
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Old 04-05-2014, 04:19 PM   #20
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Thanks for the prompt reply....
One more question....
I am using PEX. I have used the ss crimps on most of the fittings, and I know there are copper rings, compression and push together.

Has anyone found any negatives to simply using ss hose clamps and tighten them with a socket and ratchet?
We are not dealing with high pressures.

Bob and Gail
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