<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by no18yes:
FLYTYER, that is where I chased down the trouble to, but how did you replace the back flow device? I started to and found out that it was connected to PVC behind the facia plate and decided that it was a project to tackle when I get home. I can live with the low pressure until then. Where do you get replacements of the type that you described (Manual valve) and what is the "manual valve?" questions, questions....txs for the input. </div></BLOCKQUOTE>
I may have mislead you somewhat, so...I removed the backflow preventer by loosening the coupling to the preventer behind the facia. This is little tricky since you really cannot see it. I used a mirror to see and understand which coupling to loosen.
Then I removed the valve by removing the 2 SS screws on the mounting plate. Next I just removed the guts of the valve. Then I just remounted the valve (less its innards) and attached the coupling. There may be a plastic seal which if not positioned correctly will allow water to leak from the coupling.
The manual valve is a gargen hose type valve (plastic or brass) which has a small knob or lever on the side to turn it on or off. You can get one at Wal-Mart, Loews, Home Depot, etc..
For "ichn2go"...the backflow preventer is used to stop the flow of water out of the coach into a campground or city water system. Most RV's have them and until a problem develops most of us never know such a device is there. Many areas of the country have such requirements on connections to their water systems.
There is also usually a backflow preventer on the output of your hot water heater.