Today we went to grill the first time of the season.  Went to light the grill, no light, no gas flow, nothing.  I have a nice new grill level gauge, it shows a full tank.   Lifted the tank, full tank. 
Turns out that the regulator/check valve went bad over the cold winter months. 

I thought, no problem, it’s a $17 repair or so.  Go to the local Home Depot (shudder) and look at the generic regulators.  The regulators with a hose has a 3/8″ compression fitting.  The gill has a 1/8″ NPT fitting.   So, what I end up having to to is get a 1/8″ nipple, to a 1/8″ to 1/4″ reducer coupling, to a 1/4″ to 3/8″ compression fitting.  Use a little yellow pipe tape (DO NOT USE THE REGULAR TEFLON TAPE, THE PROPANE WILL EAT IT UP) and I have a grill with a standard 3/8″ compression fitting.  If the regulator fails again, it is an easy replacement.  I have a Char-Broil grill, so this may be useful information for anyone who has a Char-Broil (Preformance Series) who doesn’t want to pay $50 to get the official replacement part from them.   It works great!

One more thing, the pipe fitting section at Home Depot is HORRID.  You might as well throw all the crap on the floor in a big pile.  It would be easier to find what you need!  I ended up going to Ace Hardware.  They had everything in stock, organized, and the salesperson was helpful and found just what I needed.