Question about Weber Genesis Silver B Grill

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Frost around regulator and hose

I connected a new full LP tank to my Weber silver B grill. After cooking on it, I noticed a frost had formed over the regulator and the hose leading to the burners. What is the cause of the frost? Do I need to repair anything?

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In most cases this is not a problem. If the burners are shut off and you still get this and it doesn't disapate in a few hours there is probably a leak you need have a professional look for.

Under normal conditions the overpressure valve on the bottle will go off if the bottle is overfilled. This almost never happens anymore. Dealers are overcautious.

What does cause this is high humidity and the JT affect. Your bottle if full and in the summer is at 150 psig plus. Your burners operate at inch ounces (read very very low pressure). Dropping pressure through your regulator causes serious cooling. This is how you process many gases into refined gases these days. Letting air out of a tire does the same thing. If the humidity is high you will get frost on the hoses and other areas the cool gas passes through.

By taking this to some dealer and having him drain it you are getting screwed and wasting money. They also vent the excess gas to atmosphere which may be illegal and is definitely pollutting.

I work in the propane biz.

Posted on May 05, 2009

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My neighbor had the same problem, but with a different brand. It turned out to be the LP tank was overfilled. Take the tank back to someone that knows what they are doing and have it bled to the correct pressure.

Posted on May 06, 2008

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1. Turn the burners on for one full minute and then off.

2. Next, remove the regulator and the hose from the tank.

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4. And very slowly open the tank.

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