Amerex KP Wet Chemical Recharge Agent, 3.75 Gallons - 12866

The Amerex KP 3.75 Gallon Wet Chemical Recharge (Part No. 12866) is the mid-range liquid engineering solution for the Amerex KP 375 series. Pre-measured for the KP 375 cylinder assembly, this potassium-acetate solution is designed to support exactly 11 flow points, making it the industry standard for medium-sized kitchen configurations.

This factory-sealed agent ensures ready-to-pour efficiency without the risk of field-dilution errors. Upon discharge, the CH544 agent initiates a saponification reaction with hot cooking fats, creating a non-combustible foam barrier that excludes oxygen while absorbing massive thermal energy. This rapid quenching brings oil temperatures below the auto-ignition point, preventing re-flash. For fire protection contractors, the 12-year shelf life and precise volume make it the definitive choice for maintaining UL 300 and NFPA 17A compliance in high-volume franchise kitchens.

The 12866 must be installed exclusively in the Amerex KP 375 cylinder assembly by a certified fire suppression technician in accordance with NFPA 17A. Before refilling, the technician must perform a full internal inspection of the cylinder to verify it is free of corrosion, sediment, or residual agent from a previous discharge. The entire agent volume must be replaced; topping off a partially discharged cylinder is a code violation, as stored-pressure systems rely on a specific agent-to-propellant ratio to ensure a consistent 195 PSI charge.

Following the fill, the cylinder must be pressurized with high-purity nitrogen to the factory-specified pressure and undergo a calibrated leak test before being returned to service. Nozzles must also be inspected for blockage prior to the system being re-armed, as differences in viscosity between the OEM CH544 agent and non-listed substitutes can cause uneven spray patterns or orifice clogs. NFPA 17A requires a full internal inspection and agent replacement every 6 years to maintain UL 300 listing.

Is 3.75 gallons sufficient for a standard franchise kitchen?

Yes. The 12866 recharge is engineered for the KP 375 series, which supports 11 flow points. This is the sweet spot for 10-to-12-foot hoods found in most casual dining and franchise environments, providing enough agent to cover large fryer batteries and a full plenum section.

Can I top off a partially discharged KP 375 cylinder?

No. Stored-pressure systems rely on a specific agent-to-propellant ratio to ensure a consistent 195 PSI charge. Topping off is a code violation; the entire volume must be replaced with a fresh 12866 pail to ensure the system reaches its factory-rated ready state.

Why is CH544 specifically required for Amerex systems?

CH544 is the only agent listed for use with Amerex KP hardware. Using a generic chemical can lead to uneven spray patterns or nozzle clogs due to differences in viscosity. Sticking to the OEM agent ensures the system maintains its UL 300 listing and operational reliability.