“Often, I am replacing a hydropneumatic (well) tank in a cellar of a large house. A little residual water doesn't cause a problem. A side benefit is that it functions as a union at a much lower cost.”
“This coupling was just what I needed to go from my new 3/4 in. PEX to some old 1/2 in. copper pipe I left in simply because of my limited time to install new water lines in my house. Made hookups easy.”