I’ll cover the most common installation defects, and I’ll go over the differences

between new and old connectors.

Gas Connectors are not a substitute for gas piping. To start, here’s a photo of a gas connector – it’s that corrugated yellow thingy.  Most newer gas connectors look just like this one.  Remember, a gas connector is used to get from the gas piping tothe appliance – that’s all.  Gas connectors should never be used as a substitute for gas

piping.  This means that if you ever see two connectors joined together, it’s an improper installation.  If you hear someone call this a flexible gas line, smack ‘em upside the head and gently correct them.  It’s not a gas line, it’s a gas
connector.

Gas Connectors should never disappear in to a concealed location.  If a gas connector disappears in to a wall, floor,ceiling, or cabinet of an appliance, it’s an improper installation.  Only proper gas piping should be run through walls, floors, cabinets, etc.

Gas Connectors need to be sized appropriately. I stopped by my favorite orange box the other day to check out their selection of gas connectors, and they had three sizes available – low demand, moderate demand, and large demand connectors.  It’s alright to go larger, but not smaller.   The size and length of the appliance connector is determined by the BTU rating of the appliance.  Most jurisdictions allow six foot connectors for ranges and clothes dryers, and three foot connectors for everything else.