Wet Pipe Systems
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      Where Should I Install an Air Vent on a Wet Pipe Fire Sprinkler System?

      Vents should be installed at an accessible high point.

      Automatic air vents (PAV-W) provide automatic venting of trapped air in wet pipe fire sprinkler systems. The vents are to be installed at an accessible high point on the fire sprinkler system remote from the system riser where gas can be vented.

      The ECS Ejector Automatic Air Vent (PAV-W) fulfills the NFPA 13 (2016) requirement to provide a means of venting gas from a wet pipe fire sprinkler system.