Gas hanging heater making whistling noise

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How and why to pressure test gas line video
https://youtu.be/qBXaU72o1EY

How to set gas pressure Video
https://youtu.be/Fwz86GETRp4

Here is the manometer that I use if you want to buy one.
Fieldpiece SDMN6 Pressure Switch Tester
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How to Thread Gas Pipe Video
https://youtu.be/-MmwvxOWm24

How to find a gas leak leak?
https://youtu.be/i2f4hWkf2Zo