ok heres the thing, i have a tap that clamps to the water pipe and you have ya ro unit pipe coming from it ( see pic below ) i wanna move this from my bathroom pipe as its taking up room and connect it to my main supply where it turns off the water but put it above the tap encase i get leaks. would this be safe to drill a hole in my wall and poke the ro pipe out and send it to my shed where i have a rain water tank?? id put a ro tap in the water supply to stop the frost ice freezing my main water supply. would these pipes handle sub zero temps all the time??