Motorhome propane tank makes high pitched noise. Why?

[Gypsy Jane]

Ever since the last time I had it filled (last week) my propane tank has been emitting a high pitched whine noise. At first it seemed it was only when I was using propane in the coach and I could only hear it when I was outside but on further investigation, it's just louder when in use, it whines all the time. I tried adjusting the valve but the only way to make it stop whining is to shut the tank completely off. So I did. What could be making it do this?

[She and I]

Quote:

Originally Posted by Gypsy Jane Ever since the last time I had it filled (last week) my propane tank has been emitting a high pitched whine noise. At first it seemed it was only when I was using propane in the coach and I could only hear it when I was outside but on further investigation, it's just louder when in use, it whines all the time. I tried adjusting the valve but the only way to make it stop whining is to shut the tank completely off. So I did. What could be making it do this?

Hi Gypsy.....Try shutting the gas off and burn off the gas in the line, then open the tank valve slowly, It has a shut off inside incase of rupture..but it sounds like the regulator valve is vibrating the diaphram inside... Maybe its too full, Lp tanks only fill to 80%...Maybe to much pressure, let some escape or better yet take it to the person who filled it and ask them....

Hope this helps
Richard

[TXiceman]

Sounds like a bad regulator. Try rapping the regulator with a tool and see if this changes it. They are not rebuildable, so you will need to replace it.

Ken

[wa8yxm]

The whine is the valve inside the regulator opening and closing and opening and closing, This is normal, hearing it is not but some do.. The fact that it is all the time indicates you have some propane leak OR and I stress OR consumption all the time (pilot light perhaps)

You need to figure that out.

NOTE: Water systems do the same thing if there is a regulator.

[Bill Adams]

So get cigarette lighter and start tracing down the all of the lines and connections between the bottle and any outlets. Next..................
OK, just kidding guys....Don't really do that and don't shoot me!! Just couldn't help myself.

[RV Wizard]

Quote:

Originally Posted by She and I Hi Gypsy.....Try shutting the gas off and burn off the gas in the line, then open the tank valve slowly, It has a shut off inside incase of rupture..but it sounds like the regulator valve is vibrating the diaphram inside... Maybe its too full, Lp tanks only fill to 80%...Maybe to much pressure, let some escape or better yet take it to the person who filled it and ask them.... Hope this helps Richard

Very close diagnosis. Close the valve as recommended and burn off the pressure. Then open the valve slowly as to not set off the excess flow valve inside the service valve assembly. This should correct the problem. If not it may have been overfilled and liquid propane is entering the valve instead of vapor.

[BuckHardy151]

I tend to agree with those that are saying over full tank. If the tank is removable,take it a distance from ignition sources and crack it open to allow some to escape. Also make sure regulator vent is facing down.