How I Winterized my Coach

willald wrote:

..To keep from destroying the water system on the RV I built a tool to reduce the pressure to a manageable amount.

I went to Harbor Freight (I hate using them as everything comes from China, but in this case was the logical choice) and then to Home Depot and picked up an air regulator and the necessary fittings....

Every air compressor I've owned or worked with already has a pressure regulator, that would allow you to set the pressure down to something lower like 30 or 50 psi or whatever. Never had to buy or build one separately, but apparently you do when working with the larger, upright air compressors. I've always used smaller horizontal portable type compressors (5 gallon, 125psi max), and they've always had the regulator.

Either way, you're absolutely right that you need that regulator, as you do not want to push 110 psi through your water lines!

Yes sir, my uprights have no regulator on the output, only regulation is done by the magnetic switch to turn them on and off.

I was being conservative. I started at the highest point and opened one valve (hot then cold)at a time and let it run until there was NO evidence of any moisture coming out and then closed it and moved to the next one. Although the pressure was not high the volume was. I am confident there was not water remaining in the lines and if there was when I flushed with antifreeze that threat was removed.

Thanks for your reply.