An LP (liquid propane) regulator adjusts the pressure from a gas tank through a hose connected to an appliance such as a heater or outdoor grill for cooking. The regulator controls gas flow through the line to maintain a safe pressure. Without a regulator, propane flames could rage out of control. If you need to adjust the LP regulator when using it with a new appliance, the pressure screw is typically located underneath a plastic or metal cap on the side.

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Step 1

Close the valve knob on the LP tank, typically mounted on a brass stem at the top.

Step 2

Remove the plastic or metal cap covering the regulator adjustment screw on the side of the regulator.

Step 3

Turn the screw below the cap clockwise to raise the pressure flow through the regulator, using a screwdriver. Turn the screw counterclockwise to lower the pressure of the gas the regulator will allow through the system.

Step 4

Replace the cap on the regulator before opening the LP tank valve.