quick fittings: have become more and more popular. They are used to provide a fast connection. They have two parts, a male and female, that screw together to provide a make-or-break seal. Once they are installed on the gas lines, replacing the filters is much quicker and easier than compression fittings because the Quick Connect pieces have O-ring seals and check valves to protect the gas line from outside contaminants when they are unconnected.
Brass Quick fittings should be used with copper tubing and Stainless Steel Quick Connects should be used with stainless steel tubing
