This may answer everyone's question on this. As stated earlier, I have always fully opened and back seated valve. There is no reason to have to close a valve quickly in an emergency. If a person takes their time in setting up their propane equipment properly the safety controls will work properly.
THE FOLLOWING IS A QUOTE A
MAN IN THE PROPANE BUSINESS FOR A VERY LONG TIME. TAKE THE TIME TO READ IT PLEASE. (Not yelling just a small break)
"Resolved Question: When you use a propane tank to barbecue, how much do you open the tank before you turn on the grill?"
AND STILL ANOTHER QUESTION.
There is a nob on top of the tank, and you have to turn it to open it. I was told to open it all the way, and then to turn on the grill nob and light it. Then someone said just give the tank nob a little turn and go ahead and turn on the grill nob and you will save propane. Who is right and why?
Asked by orange 2 years ago
AND HERE IS THE BEST ANSWER!
The correct procedure is as follows.
"Make sure all burner controls are off. Turn the cylinder valve on very slowly and only open it about 1/4 turn. Wait several seconds. This is because there is an excess flow valve built into the connection between the the cylinder and hose. This valve is designed to sense if the hose is cut or ruptures and will significantly reduce the flow of propane in that case. By only opening it a bit, you are only letting a small amount of gas through to the line with propane. If you hear a "click" the excess flow valve activated. You need to close the cylinder valve, wait a few seconds and start over.
Once the line is charged, you should open the valve all the way and "back-seat it gently". It is normal for a cylinder valve to have slight leakage around the threads when in mid position so we always backseat the valve. This also ensures that the excess flow valve senses full tank pressure and can do it's job properly. If you throttle the burner by only opening the valve a bit and letting a small amount of gas through, the excess flow valve will never be able to sense that there is a problem.<br />
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When you are done grilling, you should close the cylinder valve first to allow the remaining fuel in the lines to be burnt off.
You will NOT save money by only opening the valve a bit, but you could cripple an important safety feature of the equipment.
Always refer to the certified installation and operation instructions for your particular appliance, and contact the manufacturer directly to clarify any concerns. What I have stated above is a general description that should cover most grills, but there may be exceptions...
Hope this helps!
21 years experience in the propane business and a licenced gas fitter.
Answer by Propane Guy 2 years ago R
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