I have been living in my home for over 10 years and it is heated by natural gas. Over the last few weeks I have occasionally been hearing a sometimes loud hum from near our external gas gauge. I have attached a picture of the object off the gas line making the noise. It almost seems as something should screw into there. Any idea what this is and if I need to screw something into it?
Update: This was months ago, but I called the gas co. and they replaced the gas regulator without asking any questions or any charges.