1/2 inch Brass 3-way Ball Valve with Long Blue Handle.
Used in all Rv's manufactered 2009 and newer.
In some cases for RV's older than 2009 this valve can replace the old sized valve. Make sure before purchasing that the connecting parts can come closer together as this valve is smaller in size than the B54-012 valve. This valve still has all 1/2" male threaded sides just as the B54-012.