The ECS Protector Vent (PAV-D/DQ) provides oxygen venting in dry pipe fire sprinkler systems. As a fire sprinkler system is filled with a continuous supply of nitrogen gas from the ECS AdvancedIQ Nitrogen Generator System, the PAV-D/DQ allows oxygen rich gas to be vented from the fire sprinkler system. Over a short period of time (typically less than 14 days) the ECS Protector Vent will almost completely remove oxygen from the fire sprinkler system (<2% oxygen).

The ECS Protector Vent is equipped with a levered float valve that prevents water from passing through the restricted venting orifice when water enters the fire sprinkler system. The in-line filter protects the restricted venting orifice from contaminants from the sprinkler system. A backpressure regulator is included to prevent total system depressurization from the vent assembly during the venting process. The restricted venting orifice allows oxygen to be vented from the fire sprinkler system at a controlled rate to achieve a minimum nitrogen concentration of 98%.