Propane tank shuts off.

[VTLee]

I have a 5th. wheel with a tank on each side. I filled both tanks and now the tank on the curbside keeps shutting off if it is used for the heater or the high output stove burner. It will work on low on the stove. Is it a problem with the tank or the regulator?

[RJsfishin]

Switch tanks,...if the other tank woks properly. it is a problem w/ the OPD valve in the tank.

[reddwar]

On our 2010 HH LP worked great tell it got cold and we had need for the furnace then NO LP. Found a Dealer that had a couple of old hoses that I have to use a wrench on. Would rather use a wrench & know I have LP then twitch by hand & no LP when I need it. That's china junk for you! works great tell you need it!

red

[Old-Biscuit]

You have a 30# regulator on curbside (Red) so that full cylinder pressure (200#) is not on that long line across 5th wheel. Those regulators can be problematic.

The pigtail hoses with the ACME nut (Green) have the 'excess flow' valve in them. Basically a ball bearing that floats in center position when pressure is equalized on both sides. they can get gummed up and stick towards the closed position restricting flow.

The cylinders have a spring loaded valve at connection that is pushed open by the stub inside the ACME nut so that no flow will come out of cylinders if a hose is not connected.
The ACME nut safety device is what trips on high flow...not the cylinder OPD. That prevents cylinder from being overfilled.

[Gene_Ginny]

Perhaps the ACME fitting that connects to the tank is not rated for the high output stove. When the flow through the ACME fitting exceeds the rated output it reacts as if it was a leak and closes the flow.

Click for more information on ACME

[bobsallyh]

If this a newer RV this is a common problem since the manufactures started to put a regulator in line on the opposite side from the main regulator. Check to see if you have the "extra" regulator. It was put there to keep the OPD on the far away bottle from sensing the quick need for gas when the bottle beside the main regulator runs empty. Seen this situation on several new fivers in the park in Yuma during the winter.

[shooted]

Most likely the hose between the tank and the regulator.