Ansul 1F Nozzle (new style) - 443319

The Ansul 1F Nozzle (Part No. 443319) is the New Style precision discharge component engineered for the R-102 fire suppression system. As a one-flow-point (1.0 FP) nozzle, it serves as the foundational standard for protecting fryers, griddles, and ranges. This updated model features an improved orifice geometry that creates a specialized internal vortex, shearing the ANSULEX liquid agent into micro-droplets that maximize surface area for rapid cooling and saponification.

Constructed from heavy-duty machined brass, the 443319 is designed to withstand the intense radiant heat of high-BTU appliances without warping. It is fully compatible with the Ansul laser aiming tool, allowing technicians to eliminate parallax error by projecting a pinpoint beam to the designated nozzle aiming point (NAP). By utilizing the 443319, facility managers ensure their wet chemical discharge meets the rigorous UL 300 and NFPA 17A standards required for modern commercial kitchen safety.

The 443319 must be installed by a licensed fire suppression technician in accordance with the Ansul R-102 design manual and the system's as-built drawings. Nozzle placement must conform to the specific Nozzle Aiming Point (NAP) for each protected appliance. Use of the Ansul laser aiming tool is strongly recommended to eliminate parallax error and document compliance with the installation specifications.

A metal blow-off cap must be installed on every 443319 nozzle to prevent aerosolized grease from baking into the orifice between service intervals. During each semi-annual inspection, technicians must verify the cap is present and intact and that the orifice is free of blockage. Any nozzle showing signs of corrosion, heat warping, or orifice restriction must be replaced with a new OEM 443319 to maintain the system's UL listing.

What is the difference between the "Old Style" and "New Style" 1F nozzle?

The New Style (443319) features an improved internal finish and vortex atomization geometry designed to meet the rigorous standards of modern UL 300 testing. It is the direct OEM replacement for legacy 1F models and is fully compatible with existing R-102 piping manifolds.

Can I use a 1F nozzle for a 2.0 flow point application?

No. The 1F is strictly a 1.0 flow point nozzle. If your appliance protection requires 2.0 flow points, you must use a high-flow variant or multiple 1F nozzles as dictated by the fire suppression design manual.

Does this nozzle require a specific blow-off cap?

Yes. To maintain clog-resistant performance, the 443319 should be paired with a metal blow-off cap. This prevents aerosolized grease from baking into the orifice, ensuring the nozzle remains ready for an instantaneous discharge.