New NFPA 13 code requires venting of excess air from wet fire sprinkler systems to help prevent corrosion. The PURGEnVENT Air Venting Valves are designed to exceed the requirements of the NFPA 13 standard. PURGEnVENT Models 7900AAV and 7950ILV are designed to work alone or in tandem to eliminate as much air as possible from a wet fire sprinkler system to help prevent corrosion.


The Easiest way to meet NFPA 13

The PURGEnVENT Model 7900AAV End-of-Line Air Venting Valve is a 1" ball valve, strainer, air vent, and purge assembly. This patent pending, one-piece isolation valve with strainer and purge with hose thread is designed to allow for the rapid purging of air from the pipes as the system is filled and the gradual venting of air once the system is filled.

The AGF PURGEnVENT Model 7900AAV is designed to allow any remaining air trapped at the end of the lines to vent as the system settles. The purge valve with hose thread is designed to purge air as the system is being filled and also convenient for periodic cleaning of the strainer.

M7900A Dimensions


Meet NFPA 13 and Vent Air from the Systems Main Line

The PURGEnVENT Model 7950ILV Main Line Air Venting Valve is a pipe separation chamber specifically engineered to remove air as the system is filled and provide a location for any trapped air remaining in the system to be automatically vented.

The AGF PURGEnVENT Model 7950ILV is a patent pending chamber and air scoop that is designed to create a separation of the air from the water as the system fills. As a result of the Model 7950ILV chamber having a larger diameter than the main supply line, water entering the chamber is momentarily slowed allowing the heavier water to drop as the air rises and is scooped into the venting assembly. As water exits the chamber the diameter is reduced back to the standard supply line pipe diameter which pushes air back towards the scoop and venting assembly. The larger diameter of the PURGEnVENT chamber allows air remaining in the system after it is filled to seek out and find the Model 7900ILV vent outlet.


Typical Installation Orientation

M7950A Dimensions
7950ILV-20 2" 2 3/8"
5 1/4"
11 1/8"
7950ILV-25 2 1/2" 2 7/8"
5 1/2"
11 3/8"
7950ILV-30 3" 3 1/2"
5 3/4"
11 5/8"
7950ILV-40 4" 4 1/2"
6 1/4"
12 1/8"
7950ILV-60 6" 6 5/8"
7 7/8"
13 3/4"
7950ILV-80 8" 8 5/8"
8 7/8"
14 3/4"

Alternate Installation Orientation (2" Model Shown)

M7950A Dimensions