Automatic Shut-Off Valve with Quick Connect Fittings
The Automatic Shut-Off Valve is designed to save water that your RO system would otherwise send to the drain when the storage tank fills up. The device stops this by shutting off the incoming water when the pressure on the tank side reaches about 2/3 that of the feed pressure.
4 ports on shut off valve, with no instructions as to which lines get plumbed. Device is useless if I can’t install it.