The Risks Of Using An Old Propane Tank Have Nothing To Do With Propane Expiring Unless your propane tank is sitting unused in the garage, it's unlikely you're going to hit its recertification date ...

This includes barbecue grill-size tanks. An OPD valve is triangular-shaped and is clearly marked with the letters OPD. It is illegal to fill a bottle without this valve. Also, any size propane tank ...