Propane valve won't budge

[vhuerta800]

I have a 1990 fleetwood tioga montara and the open and close valve is stuck on the propane tank. It's 3/4 of the way full right now and I've tried to use pliers and spray a little grease on the threading in hopes that it'll come loose. Any help is appreciated. Had my burly housemate also take a try at it with pliers.

 

[TheLooks]

Is it already fully open? The flow may be blocked by a bad regulator or another valve?

 

[vhuerta800]

Is it already fully open? The flow may be blocked by a bad regulator or another valve?

I tried to close it also and it wouldn't give at all.

 

[Travelor]

Is it an installed tank or one that can be exchanged for a fully charged unit at a box store?

 

[vhuerta800]

It's installed

 

[Dona40]

Do you have a picture of the valve?

 

[vhuerta800]

Yes

 

[vhuerta800]

Is it already fully open? The flow may be blocked by a bad regulator or another valve?

I'll check out the regulator just in case. There are currently 4 threads showing behind the knob, does that mean it's open then?

 

[Dona40]

Not necessarily although it does look that way. Try loosening the nut right below the knob. The 1/2"? nut about a turn. do some light taping while trying to turn the knob. It's probably corroded in there.

 

[vhuerta800]

When I loosened the nut propane came spewing out. Tightened it back up and the valve still won't budge.