Why can't the natural gas valve be opened after being closed?
2 Answers
Low gas pressure causes the valve to close automatically. Some households may use manual valves, where you can simply turn the main valve. For automatic valves, you need to locate the battery compartment, remove the batteries inside, wait for about ten minutes, and then reinsert the batteries. The valve will automatically open, allowing you to use the gas. If this does not resolve the issue, you can call the gas service hotline. Additionally, there is a red plastic button on the top of the natural gas meter, which is an automatic emergency shut-off valve. If the gas consumption exceeds a certain limit, it will assume a gas leak and close automatically. To open it, simply lift the transparent plastic cover above the button and gently pull the red button upward.
I've been driving a CNG vehicle for many years, and it's common to encounter issues where the valve gets stuck and won't open, mostly due to rust or dust accumulation jamming the valve core, especially in humid environments where metal oxidation makes the rotating parts sticky and hard to turn. I remember one winter during maintenance when I closed the valve and forgot to check it. Months later, it was completely stuck, and I had to take it to the workshop where they used specialized oil spray to loosen it. I recommend lubricating the valve shaft every quarter with rust-preventive sprays like WD-40—just a light spray—and wearing gloves during operation to avoid slipping. This can reduce the likelihood of jamming. If it still doesn't work, don't force it; seek professional repair to avoid damaging the entire fuel pipeline system.
