branch vent

branch vent

branch vent, 1
1. A vent connecting one or more individual vents with a vent stack or stack vent.
2. A vent pipe to which are connected two or more pipes that vent plumbing fixtures.
References in periodicals archive ?
Figure 2 shows a field installation of a three-way valve on an oil separator where the outlets of both relief valves are connected to a single branch vent line.