What is the required slope for piping in a system where vapor condensation can occur?

In systems where vapor condensation can occur, it is essential that the piping is sloped back to the container. This configuration allows any condensed liquid to flow back towards the container rather than pooling in the pipes. If the pipes are flat or do not slope appropriately, condensation can accumulate in the systemic components, potentially leading to pressure increases or uneven gas flow, which could compromise the safety and functionality of the system.

A vertical approach is not appropriate since it doesn’t facilitate the drainage of condensate back to the container. Similarly, if the pipes were sloped away from the container, any condensation that forms would instead be directed away from the source, leading to possible blockages or other complications. Therefore, maintaining a slope back to the container serves to ensure that the system operates effectively without risk of liquid buildup, adhering to best practices for propane gas handling and installation.