<b>Key Features:</b><br><br> - This Non-whistle corrugated flex gas line is designed for indoor and outdoor use with gas ranges and furnaces. <br> - Naturally corrosion-resistant to increase flexibility quality flared end fittings to prevent liquid leakage. <br> - Provides extra corrosion protection from accidental contact with common household chemicals. <br> - Non-whistle corrugated flex gas line connector can be used for fire pit and fire pit pan.<br><br> <b> Compatibility:</b><br><br> ✔ Propane<br> ✔ Natural Gas<br> ✔ Gas Fire Pits<br> ✔ Gas Fireplaces<br> ✔ Gas Log Sets<br><br> <b> Tips for checking and addressing problem of whistling</b><br><br> ➤ Flex Line Problems: <br> 1) Used a whistle-free line with varying ridge sizes, which helps to eliminate noise.<br> 2) Chosen a line with a wider diameter to minimize whistling by allowing the right amount of gas to flow to the burner at a lower rate of speed.<br> 3) Taken care to avoid sharp 90-degree turns and/or kinks in the line during installation.<br><br> ➤ Gas Pressure is Too High<br> ~ When a high level of pressure is applied to a small opening, the result is a whistling sound. This is the mechanism at play when the line pressure in your fire pit gas installation is too high.<br><br> ~ Since natural gas is typically transported at high pressures, a regulator is often required to mitigate this pressure before the gas reaches the burner (Keep in mind that this work should only be performed by a gas installation professional, since they have the know-how to size and install the proper regulator for your fire pit configuration). Pressure guidelines are as follows:<br>. Natural gas: Between 3.5” WC and 7” WC.<br> Propane: 7” WC and 11” WC<br>