This condition is called choked flow. In gas applications, the vapor velocity through the valve will increase until the vapor reaches sonic velocity. At this point, the vapor can go no faster because ...
However, as with all appliances that run on natural gas, it's important to use it properly once it's installed ... That's because the wall switch sends an electrical signal to your fireplace to open a ...
A landscaper hit a propane line outside a home at 36 Ballardvale Road Thursday morning, causing about 500 gallons of the gas to be released into the air.