Buckeye BFR-AC-S Nitrogen Cartridge (5 Pack)

The Buckeye BFR-AC-S Nitrogen Cartridge (Part No. BFR-AC-S) is the high-precision pneumatic engine designed for the Buckeye Kitchen Mister and Industry Guard fire suppression systems. Known as the small actuation cartridge, the BFR-AC-S is the primary energy source within the SRM or SRM2-M Releasing Module. In a fire emergency, this cartridge provides the instantaneous pneumatic pulse required to trigger the discharge of agent cylinders. While the larger L cartridge is reserved for massive industrial lines, the BFR-AC-S is the industry standard for small-to-medium hood configurations, such as those found in food trucks, cafes, and standard quick-service restaurants.

Manufactured from high-strength steel with a gold-colored puncture diaphragm, each BFR-AC-S is factory-charged with high-purity dry nitrogen. This 5-pack standard series is the logistical standard for fire protection service companies and large facility maintenance departments. By standardizing with the BFR-AC-S, technicians ensure they have a reliable, OEM-certified propellant supply for systems managing 1 to 3 agent cylinders. Using the genuine Buckeye cartridge ensures that the firing pin depth and puncture force remain within the exact tolerances required to maintain the system's UL 300 listing.

The BFR-AC-S must be installed by a certified fire suppression technician in accordance with the Buckeye Kitchen Mister system design manual and NFPA 17A. Before installation, inspect the threads and gold-colored diaphragm for any signs of corrosion or pitting. Thread the cartridge into the SRM or SRM2-M Releasing Module using approximately 10 full turns to ensure a gas-tight seat. Under-tightening is a leading cause of incomplete actuation or gas bypass.

The BFR-AC-S is a single-use, diaphragm-sealed vessel and must not be refilled, reused, or substituted with non-OEM cartridges. During each semi-annual inspection, the cartridge must be removed and weighed on a calibrated scale. If the weight is even a few grams below the stamped weight on the cylinder body, the cartridge is considered a leaker and must be replaced immediately per NFPA 17A. The 5-pack format ensures truck stock is always available for emergency re-arming following a discharge event.

When is the BFR-AC-S required over the BFR-AC-L?

The BFR-AC-S is the correct hydraulic choice for any Buckeye system manifolded with 1 to 3 agent cylinders. If your system expands to 4 or 5 cylinders, you must upgrade to the BFR-AC-L to ensure there is enough gas volume to overcome the increased friction and volume of the longer actuation lines used in larger configurations.

Why must I weigh the cartridge during every 6-month inspection?

Unlike stored-pressure tanks with gauges, the BFR-AC-S is a sealed vessel. The only way to verify that the nitrogen has not leaked through a microscopic fissure in the diaphragm is to weigh the unit on a calibrated scale. If the weight is even a few grams below the stamped weight on the cylinder body, the cartridge is considered a leaker and must be replaced immediately per NFPA 17A.

Is there a specific shelf life for an uninstalled BFR-AC-S?

In a climate-controlled environment, the dry nitrogen remains stable indefinitely. However, technicians must inspect the threads and diaphragm for any signs of corrosion or pitting before installation. The 5-pack standard series ensures that truck stock is always fresh and ready for emergency re-arming after a fire event.