A BABAA-Compliant Automatic Air Vent Assembly for Wet Fire Sprinkler Systems
Malvern, PA – April 14, 2025 — AGF Manufacturing proudly announces the release of the PURGENVENT™ Model 7940 BLE (Branch Line Extension), a Build America, Buy America Act (BABAA) compliant automatic air venting valve assembly designed to increase the longevity and reliability of wet pipe fire sprinkler systems. With integrated features for streamlined installation, system protection, and NFPA 13 compliance, the 7940 BLE sets a new standard for air management in fire protection.
“The 7940 BLE is a comprehensive solution to help contractors meet NFPA 13 code requirements while simplifying installation and improving long-term system performance,” said Jim McHugh, President of AGF Manufacturing. “It’s everything you need for compliant venting in one factory-assembled, American-made package.”
NFPA 13 now mandates air venting on all wet pipe fire sprinkler systems using metallic pipe. The 7940 BLE is engineered to meet this requirement with a UL Listed and FM Approved 7900V automatic air vent that efficiently expels trapped air during normal operation, helping reduce internal corrosion and the risk of system damage.
The 7940 BLE features the FM Approved and UL Listed 7900V automatic air vent, which utilizes a conical, recessed design and a single-float mechanism for precise, protected venting. An integrated isolation valve and strainer allow for safe maintenance while preventing debris from entering the system. The assembly also includes a purge valve with union and hose connection that speeds up air removal during system filling, simplifies strainer cleaning, and acts as a vacuum breaker to assist with complete system drainage. To support federally funded projects, the 7940 BLE, like the 7950 ILV, is constructed with Build America, Buy America Act (BABAA)-compliant materials, including domestic pipe, couplings, and end caps. Its durable branch line extension (BLE) is fabricated from Schedule 10 or 40 domestic pipe, finished with a tough red powder coating and clearly marked with “AIR VENT” signage for easy identification during inspections and servicing.
AGF recommends installing the 7940 BLE near the high end of system branch lines—where air naturally accumulates—for optimal performance. The unit’s high-visibility signage and built-in service features ensure quick location and easier maintenance access, especially in overhead or hard-to-reach locations.