Yes the propane(or any other gas) is liquid for most of it's journey from tank to your stove. for that gas t be liquid it needs to be cold. The cold regulator is just the liquid propane chilling the regulator. The only hot part is when the gas is ignited.
Look at your watch to tell the time. If the gas grill regulator is leaking gas, replace it.
AnswerThe regulator forces the gas from the propane tank to maintain a constant discharge pressure-regardless of the level of propane in the tankA regulator does not force gas from a tank. It merely regulates the amount of pressure from the tank.
The regulator is actually the silver, metal disc that is connected to your liquid propane gas tank. It's connected to the gas tank with a black, plastic collar, and then a hose goes from the regulator to your grill! There's a picture and even more in depth description of regulators and their purpose on this blog: http://grillpartssearch.com/blog_home/regulatory-regulators
Yes. If it is extremely cold, the gas will freeze and will be unusable.
As bottled propane changes from liquid to gas as it passes through the requlator it changes state and absorbs heat from the air. This causes the moisture in the air to freeze around this metal part. This is normal and is exactly the same mechanism as used in a fridge. Placing an adhesive strip thermometer,or your hand, vertically on the side of the gas bottle will tell you how full it is by the cold boundary.
The gas regulator controls the fuel gas flow.
The propane is going from a HIGH pressure, to a very low pressure,as you are using the gas,the tank WILL get very cold, this is very normal, and NOT dangerous. Great that you noticed it, but do NOT be alarmed.
Charcoal and gas grills usually cost around the same in the long run. It is more expensive to buy a gas grill, but charcoal to use in a charcoal grill is much more expensive than gas to use in a gas grill.
If you are going to buy a Weber barbecue grill, you should go ahead and get the gas one because it works better. It;s a little more expensive, but its better quality.
A gas grill can be a great way to enjoy delicious food outdoors. While there are lots of cooking opportunities with a traditional gas grill, it's often possible to explore new cooking options with a gas grill insert. Gas grill inserts can be used for cooking rotisserie-style foods. Most inserts come with a small motor that attaches to the exterior of a gas grill. This motor will automatically rotate a spit inside the gas grill.
form_title= Natural Gas Grills form_header= Barbecue all summer with a natural gas grill. What is your budget for a grill?*= _  Have you ever used a natural gas grill?*= () Yes () No When do you need the grill delivered?*= _ 
A gas regulator helps to maintain a steady flow of gas. A propane tank is an example of an item with a gas regulator. One opens up the tank to allow the right amount of gas to flow to the BBQ.