In areas where condensation may form, how should gas piping be sloped?

When gas piping is installed in areas where condensation can occur, it is essential to ensure proper drainage to prevent any potential issues such as water accumulation, which could lead to corrosion, rust, or even system failure. Sloping the piping allows any condensate that forms to drain away from the equipment and ultimately out of the system.

The most recommended slope for gas piping in these situations is 1/4 inch for every 15 feet. This slope is adequate to allow gravity to assist in the drainage of any condensate that might form within the pipe. It strikes a balance between being steep enough to promote drainage while still being manageable for installation and maintenance.

If the slope were too steep, as seen in options that suggest shorter distances, it could pose challenges during installation or lead to stresses within the piping system. Conversely, if the slope were too gentle, as suggested in other choices, it would not facilitate adequate drainage, increasing the risk of water accumulation and subsequent operational issues. Thus, the choice of 1/4 inch in 15 feet effectively addresses the need for effective drainage and safety in gas piping systems.