Different areas have different contaminants in the gas and the traps help catch these.
Gas furnace sediment trap.
This pipe extension usually is at least 3 inches long and is intended to catch any water or foreign material that may be in the gas before the material gets into.
Sediment traps are intentionally installed to help prevent sediment in the gas piping from getting into the gas valve or burner area of an appliance and fouling things up.
Gas piping installed underground shall be a minimum of 12 in depth 18 where external damage could.
It s called a sediment trap.
Installing the new furnace in a new location.
Sediment trap dirt pocket or drip leg at the appliance connection point there usually is a sediment trap or dirt pocket sometimes called a drip leg that includes a nipple and a cap.
Sediment trap cpc 1212 8 a sediment traps is required at each water heater boiler and furnace downstream of the appliance shut off valve and as close to inlet of the equipment as practical.
The furnace permit is not available on line if you are.
The photo below shows eighteen years of sediment accumulation at the first sediment trap at my own house which is located on the main gas line just before the pressure.
Most water heaters do not have a sediment trap in them.
Sediment trap cpc 1212 8 a sediment trap shall be provided on the gas line downstream of the appliance shut off valve as close to the inlet of the equipment as practical and upstream of the flex connector.