How to Unhook a Propane Tank With Reverse Threads
The reverse threads on a propane tank connection complicate the process of removing the regulator from the tank valve. Turning the valve nut in the wrong direction will tighten the nut and could lead to the nut jamming on the threads of the tank. Turning the correct tool in the right direction will release the bond between the two components and allow you to unhook a propane tank.
Read the directions stamped on the valve handle sitting on top of the propane tank. Turn the valve in the direction designated as "Off" -- generally clockwise -- until it tightens to the tank.
Adjust the size of a spanner wrench to fit the nut connecting the regulator to the threads of the propane tank. Hook the spanner wrench on the regulator nut.
Turn the handle of the spanner wrench clockwise to loosen the nut. Tap the handle of the spanner wrench with a rubber mallet if the wrench does not turn by hand.
Remove the loosened nut from the propane tank by turning it clockwise by hand until it pulls from the tank.
- Immediately tighten the nut connected to the propane tank if you hear gas "hissing" from the connection and have the valve -- located on top of the tank -- inspected by a professional.
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