A steam trap is used to eliminate the condensate when steam loses its heat energy and starts to condensate.

What is the purpose of a drip leg in gas piping. At the end of the steam line. They are located in low areas of a gas line. This could be things such as metal shavings from pipe cutting and threading during gas line installation at the home or dirt that may have gotten in to the line from utility crews installing gas mains underground.

One way to remember the above is that if the flame can be seen illuminating appliances ie gas lights or if the appliance is attended by the person operating the appliance ranges clothes dryers outdoor grills the person operating the appliance should be able to tell if the gas has stopped working then a sediment trap is not required. In front of control valves to avoid damaging the equipment. Beside above is a drip leg required.

In front of normally closed valves to avoid building up condensate that may damage the system when accelerated. It should be installed upstream of the valve. Drips legs are used to collect water droplets.

Drip legs are required to be installed in a manner that meets or exceeds fuel piping codes and manufacture requirements for appliances and devices. 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. The outlet of the meter is one such location.

To remove condensate and air from heat exchangers or radiators steam traps are used to make the heat transfer process efficient. Drip Legs are vertical piping pockets installed in steam piping to collect condensate. Drip legs used to be important when gas hat a significant water vapor content The water could condense out as droplets or cause corrosion and scaling in the pipes.

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 the appliance itself. Since gas is now sold by the therm moisture directly decreases the available heat from the gas. A drip leg can be installed anywhere at the low point in the piping system if there is moisture in the gas to allow for the removal of the condensation.