Ansul 1N Nozzle (new style) - 443317

The Ansul 1N Nozzle (443317) is a high-performance, new-style discharge component specifically engineered for the Ansul R-102 restaurant fire suppression system. In the precision-driven world of fire safety, the nozzle is the final point of delivery, the component responsible for transforming a pressurized liquid into a life-saving chemical mist. The 1N is a 1-flow point rated nozzle, acting as the industry benchmark for protecting medium-to-large cooking hazards such as industrial range lines, griddles, and charbroilers.

Featuring a streamlined, modern body with laser-etched identification on three sides, the 443317 is designed for rapid field verification during high-stakes inspections. It is engineered to achieve rapid flame knockdown and initiate a permanent vapor seal, ensuring that a kitchen flare-up is suppressed before it can transition into a catastrophic structural fire. Utilizing the genuine OEM 443317 ensures that your facility maintains its UL 300 listing and that discharge spray patterns remain consistent with factory-tested safety parameters.

Hydraulic Flow-Point Balancing

As a 1-flow point nozzle, the 1N is a primary unit of measurement in system design. This allows engineers to calculate exactly how many nozzles a single 3.0-gallon tank can support. The pressure regulation within the AUTOMAN release ensures the energy is consistent so the ANSULEX Low pH Liquid Agent is delivered with enough internal pressure to atomize correctly at the nozzle tip.

The Saponification Reaction

When the potassium-based ANSULEX agent is discharged through the 1N nozzle, it initiates saponification. The agent reacts with the free fatty acids found in hot cooking grease to form a thick, soapy foam blanket that excludes atmospheric oxygen to smother the flames and traps flammable vapors to prevent re-ignition.

Laminar Flow and Misting Dynamics

The internal geometry of the 1N is machined to produce a uniform, wide-angle spray pattern. If the droplets are too large, they can cause splash-back of the hot oil; if too small, they can be deflected by the heat plume of the fire. The 1N is calibrated to achieve a soft landing of the agent, ensuring maximum chemical concentration on the hazard surface without mechanical displacement of the fuel.

Laser-Etched Identification Purity

The 443317 features high-contrast laser-etched identification on three sides. This allows a technician to verify the nozzle type from nearly any angle during a semi-annual audit, significantly reducing the time required for NFPA 17A compliance checks.

Metal Blow-Off Cap Defense

Each 1N is shipped with a specifically designed metal blow-off cap. The cap protects the discharge orifice from caking or solidifying grease in a 24/7 commercial kitchen environment. The 443317 is not compatible with older rubber caps; using the correct hardware ensures the cap pops at the precise pressure required during an emergency.

Industrial-Grade Chrome-Plated Brass

The 443317 is manufactured from solid brass and finished with a premium chrome plating. This ensures the nozzle resists pitting corrosion caused by aerosolized fats and caustic degreasers, maintaining the structural integrity of the threads for the entire service life of the system.

• Industrial Range Lines: Providing total surface protection for multi-burner configurations.
• High-Volume Griddles: Ensuring a uniform foam blanket across large flat-top cooking surfaces.
• Heavy-Duty Charbroilers: Protecting appliances that generate intense radiant heat and high-velocity flames.
• Institutional Kitchens (Hospitals/Stadiums): Maintaining a safe, code-compliant environment in facilities where rapid recovery and suppression speed are essential.
• System Retrofits and Upgrades: Replacing older, legacy nozzles during 12-year overhauls to restore factory-rated reliability and high-visibility compliance.

Precision Aiming Logic

The 1N nozzle must be aimed according to the specific nozzle aiming chart found in the Technical Manual. Even a 5-degree deviation can result in a dry spot on a griddle or range, allowing a fire to bypass the suppression zone and reach the exhaust filters.

The 6-Month Visual Audit

During every semi-annual inspection, the technician must verify that the metal blow-off cap is present and moves freely. If a cap is missing, the nozzle must be inspected for internal grease accumulation.

Internal Strainer Inspection

During routine service, the nozzle should be removed and the internal strainer inspected for pipe scale or debris. Any blockage will lead to a partial discharge, resulting in a failure to achieve the necessary chemical concentration for suppression.

Wrench-Tight Integrity

When installing the 443317 onto the discharge pipe, ensure the connection is liquid-tight. A leaking nozzle base will bleed off system pressure, potentially failing to pop the blow-off cap during an actuation.

Can I use the 443317 with an older rubber blow-off cap?

No. The new-style 1N nozzle features a streamlined body that is only compatible with its specific metal blow-off cap. Attempting to use a rubber cap can result in the cap failing to release properly during a discharge.

Is there a difference between the 1N and the 1/2N?

Yes. The 1N is a 1-flow nozzle, while the 1/2N is a 0.5-flow nozzle. They are used for different sizes of appliances. Always refer to your original system design drawings to ensure you are replacing the nozzle with the correct flow-point rating.

Does this nozzle include the swivel adapter?

No. The 443317 is the nozzle tip and blow-off cap only. Swivel adapters, strainers, and piping are typically part of the permanent system infrastructure or are sold separately.