How to Check a Propane Regulator

Be certain that the control knobs for the propane system and the propane tank valve are both in the off or closed position before inspecting the regulator.

Inspect the regulator vent for any dirt or debris which can restrict airflow and cause unsafe operating conditions. The regulator can be found underneath the tank dome in most cases, and the vent is a circular opening with a small screen or dauber. The vent should be pointed down or covered to prevent the accumulation of debris. If the vent is exposed or in the wrong position, a plastic milk bottle can be cut to fit over the regulator until it can be fixed by a professional.

Lightly tap on the regulator until the hose moves in order to loosen any debris. This may cause some debris to enter the regulator hose. If this occurs, remove and clean the hose before restarting the system.

Check the hose for any damage. Remove the hose from the regulator and submerge in water to check for any holes or tears, which will be revealed by air bubbles. Do not try to patch holes. For safety, the entire hose should be replaced. If the hose is intact, run your bare hand across the surface to check for any weak spots in the material, another sign the hose should be replaced.

Consider the age of the regulator at inspection. Regulators have internal moving parts which endure wear and tear with age. Most regulators are replaced after 15 years; however, extreme conditions or improper use may shorten the regulator's lifespan. Contact a professional to replace an old regulator.

Listen for any sounds coming from the regulator when the propane system is operational. A regulator in good condition will make a humming sound. Any other sounds, such as gurgling, indicate a larger problem. Contact a propane professional for further inspection of the system.