Question about Thermos Quick Set Gas Grill 4000

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My tank emptied after 2 bbq's.

Gone through two tanks too fast so I made sure I screwed the valve to the tank tight so it must be leaking at other end. I look under and it's not a screw in type (crimped line). I guess I need a new hose/ reg. assy. Model 463666507. Less than a year old. Paid roughly 80 bucks at Lowes. How do I fixed this w/o spending 70 bucks on a new Valve/Hose/Regulator, p/n 80005802. Thanks.

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  • tlindbery May 11, 2010

    Are u also turning off the valve on the tank itself? That happened to me years ago. I filled the tank, bbqed and when I shut the grill off I forget to shut valve on tank off. The next time I grilled after a few minutes my tank was empty. Needless to say all the propane leaked out.

  • Jyackle5
    Jyackle5 May 11, 2010

    Just turn tank off when you are done for the night. That is an easy fix right there.



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With the gas bottle turned on make up some washing up liquid in a bowl bursh it on joints to see if you have a leak it will bubble up if you have , the try it with burner on on the gas controls

Posted on May 25, 2010


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Hello, W/D here.

Most probably, the tank-to-bowl gasket has not seated properly. They are usually neoprene, and tend to bight on the bowl socket rather than to slide into the socket where it can be compressed properly. Remove the tank bolts and look at the gasket. Re-install, using a water based lubricant on the bowl side, with the gasket installed on the tank flange. Wiggle the tank and gasket back and forth a few times, and the gasket will start properly into the cast socket on the bowl. Install the bolts and tighten to finger tight. Wiggle the tank a bit more, and level the top. Tighten the bolts uniformly.
You mention that the flush valve was hand tightened only. If this gasket is not snug (a bit more than hand tight), a leak can occur there as well.
Best regards, --W/D--

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Your frustration is common because the new tanks all have a safety feature built into them which is a pain in the you know what. Unscrew the tank to reset the safety valve and then screw it in again. That should result in the valve being in the open position and working for you.

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