Not just for RO
I used this in the supply line for my evaporative cooler (AKA Swamp cooler) this allows me to turn off the water supply and drain the line for winter without disconnecting any fittings at the supply. The connectors work fine on the black polyethylene going to cooler. I was a little concerned about that, as it is a bit softer than the tubing typically used in RO systems. Read more








