Why Is Your Propane Tank Hissing?
Written on: April 27, 2018
If you hear a hissing sound coming from your propane tank, don’t immediately presume you have a propane leak (unless you smell a leak’s telltale rotten egg odor – in which case follow propane safety procedures immediately).
That fact is, that hissing sound may not be a propane leak at all. As our friends at propane101.com explain, several other culprits could be to blame, including:
- An open bleeder valve – The bleeder valve – also called a liquid level gauge – is a small device that enables your delivery technician to accurately monitor how much propane is in the tank during a refill. To deliver your propane, your driver must open the bleeder valve; occasionally, it doesn’t close properly. If this is the case, simply turn the bleeder valve clockwise to stop the flow of gas.
- An open relief valve – A pressure relief valve is a required feature on all propane tanks and cylinders, because propane expands when it’s heated. On a hot, sunny day, you may find that the relief valve is open (and hissing); that is because it is doing what it is designed to do on hot days – slowly release pressure built up by the propane, which expands when subjected to heat. Never try to close, look into, or tap an open relief valve! Instead, you can relieve some pressure in your tank by spraying cool water from a garden hose on the tank’s surface.
If the hissing noise persists, you may have a propane gas leak – contact us immediately for service.
Keep your family safe in your propane-powered home by using your eyes, nose and ears! Learn more about propane safety here – or contact us with questions any time.