What is prohibited regarding single-wall metal pipe vent connectors?

Single-wall metal pipe vent connectors are not allowed to pass through ceilings, walls, or floors due to safety and code compliance reasons. When these pipes are installed, they are subject to high temperatures from the exhaust gases they carry. If a single-wall metal pipe were to pass through any structural barrier, it could lead to a risk of fire, as the heat could transfer to combustible materials nearby.

In addition to fire risks, single-wall vent connectors don’t provide the necessary insulation that is essential for maintaining safe operating temperatures. Using double-wall or insulated connectors is advisable in such situations to prevent the potential for thermal transfer that could ignite surrounding materials.

Moreover, building codes typically dictate these standards to ensure that installation methods minimize hazards associated with venting appliances that use propane. Therefore, the prohibition on passing single-wall metal pipe vent connectors through ceilings, walls, or floors is a critical safety requirement to prevent fire hazards and ensure the safe operation of propane appliances.