Shut-Off Valve - 1/4 in. MPT x 1/4 in. MFL
$ 13.99

This shutoff valve can be used for multiple applications.

Has a 1/4 in MPT thread on one side, this is commonly used in regulators, air distributors, and other keg system components.

The out side has a 1/4 in MFL fitting for attaching a variety of flare fitting such as a barb ans swivel nut for gas lines.

Includes a check valve, so gas can only flow in one direction, this can protect your regulator from accidential back up of beer.