Is it permissible to manifold vent pipes from multiple tanks into a single outlet pipe?

Manifolding vent pipes from multiple tanks into a single outlet pipe is a practice addressed by safety and regulatory standards. In the context of tank venting, it is crucial to ensure that the venting is done safely and effectively without creating back pressure or a hazardous situation.

When multiple tanks are vented into a single outlet, it can lead to issues such as the possibility of one tank's pressure affecting another, which can be dangerous. Therefore, many regulations and operational best practices specify conditions under which manifolded venting is allowed, if at all.

The correct answer indicates that the practice is permissible, aligning with certain guidelines that may allow for manifolded piping under specific conditions, such as using suitable materials, adhering to size ratios, ensuring that the system is designed to avoid back pressure, and maintaining proper clearances and safety measures.

Ultimately, while the answer states that it is permissible, it is important to consider the specific regulations and codes that govern such practices to ensure safety and compliance.