Is that commonly done? What size hole would be needed to break an inch and a half line? I was thinking that the check valve was going to be overkill unless I planned on being away. I have regulator valves going to each filter that I could shut off if there is a problem and I could always fill the barrels back up with a hose or bucket if it accidentally gets drained due to pump failure. If it is an electric outage I will know right away. I can run out and close the regulators in plenty of time. But why take the risk if all that is needed is a simple drill hole... as long as I don't have to bypass too much water for it.
