Stuck propane valve on full propane tank.

[BoatNutG2]

Hi all
When I tried to fill up my two propane tanks at Tractor Supply yesterday. They could fill one fine(it felt empty when we started). The other would not take any more propane with the valve turned all the way open and it felt full by weight. When I open the valve (disconnected) I can not hear any leaking nor smell any gas.

Any suggestions on how to free up the stuck valve? Or how to get rid of the full tank?

[AirMiles]

Originally Posted by BoatNutG2

Hi all
When I tried to fill up my two propane tanks at Tractor Supply yesterday. They could fill one fine(it felt empty when we started). The other would not take any more propane with the valve turned all the way open and it felt full by weight. When I open the valve (disconnected) I can not hear any leaking nor smell any gas.

Any suggestions on how to free up the stuck valve? Or how to get rid of the full tank?

I had a similar experience. I had a full tank that I could not get to work. I took it to a propane fill station and they couldn't make it work. It was a 20# exchange tank so I just exchanged it with one that worked.

But, after learning more about propane tanks, I believe the tank was overfilled when I had it refilled. I believe I could have turned the bleed valve that is used while refilling to let some of the pressure off and then the tank may have worked. I'm not sure of this. Just giving my thoughts on something I could have tried to make that tank work.

Maybe others can give their thoughts on bleeding some excess propane from the tank to make it work?

[Al and Missy]

The Over Pressure Device will also shut off flow if no back pressure is felt. You must have something connected and open the tank valve slowly or it will not allow propane to leave the tank.

Al

[BoatNutG2]

Thank you for the input. You are both correct. I bleed off the overpressure on both tanks. Also on the crossover valve there is a pressure bleed screw and now the stove, fridge, water heater and external port works great. It turns out when I filled the tank last year that I was having “trouble with” the air temperature was in the 50s now the air temperature is in the 90s so I’m guessing the gas has expanded and over pressured the tank.