You do turn off the gas supply when you’re finished grilling, don’t you? If not, you should. Weber says so.
Why? It takes the pressure off the hose, valves, and connections inside your grill. If any of those parts were to fail, you’d have a potentially dangerous gas leak on your hands.
“But my grill is well maintained,” you say. When was the last time you used a soapy water solution to check each valve and connection for leaks? When was the last time you examined every inch of the supply hose for cracks or wear?
“But I don’t turn off the gas supply to my kitchen stove after each use, and that’s inside my house,” you say. Your kitchen stove and other indoor gas appliances are designed to operate under continuous gas pressure. Your grill is not.
Remember, the manufacture is recommending that you turn off the gas supply after each use. Maybe you should follow their advice. Why take any chance at all when it’s so easy to reach down and turn a knob?
Is there a proper sequence for turning off the gas? Weber says to turn each burner control knob to the OFF position first, then turn the gas supply off at the source. The next time you cook, follow the safe lighting process by reversing those steps.