Originally Posted by northstar1960
it there for the slight chance of back flow into the water supply system !
i would dump the back flow and just get a check valve . no leak and no fuss and you'll be safe just in case that one in a million thing happens what ever that is
the backflow preventers that are installed on your hose bibs at your house all also drip a bit of water every time they are turned off.
If it is located outside your RV and/or inside the water compartment on the outside it does no harm at all when this happens. The drip simply runs out the bottom or evaporates.
Their purpose is to prevent a siphon from forming and sucking contaminated water back into yoru rv system or the system at the park or house you are hooked up to.
My advise is to leave it installed. Your safety and teh safety of others could easily be at stake!