for transferring sanitizer and other non-beer fluids from one corny keg to another, I thought of a way to use bike pump pressure.
Using 3/16" ID gas tubing and a gas QD, I connected a Presta valve from an innertube. It fits right into the tubing, and I held it with a hose clamp. I tested it over 40psi and it works beautifully. I can use it to deliver pressuriized water or sanitizer anywhere I need it.