Titan 0276248 Check Valve is basically a one-way valve.
Check Valves allow fluid flow freely one direction, but if the flow turns, the valve will close to protect the piping, other valves, pumps etc.
It is compatible with the following spray : Capspray Maxum Elite HVLP Spray Gun Model: 0524027/0524052, Capspray Maxum II HVLP Spray Gun.