Pyro-Chem Laser Nozzle Aiming Device 551265 without Adapter

The Pyro-Chem 551265 Nozzle Aiming Device is a precision fire suppression tool designed to help technicians correctly aim fire suppression nozzles in Pyro-Chem Kitchen Knight II and compatible wet chemical kitchen fire suppression systems. The device clamps directly onto a system nozzle and uses a laser light to project the exact aiming point onto the target cooking surface below. Once the correct discharge angle is confirmed, the nozzle is rotated and tightened to lock the aimed position — eliminating the guesswork that has historically caused nozzle misalignment deficiencies during AHJ inspections.

Correct nozzle aim is one of the most technically critical aspects of a UL 300 listed kitchen fire suppression system installation. Every nozzle in the system must be precisely aimed at the specific hazard area it is designed to protect — the cooking surface, the fryer vat, or the grease drain trough — per the pyro chem nozzle chart specifications for that appliance type. A nozzle that is even slightly off-aim can leave a portion of the hazard area uncovered, resulting in a UL 300 compliance failure and a real fire that escapes suppression coverage. The 551265 eliminates this risk by providing a visual laser confirmation of the exact discharge impact point before the nozzle is locked.

For fire protection contractors installing or re-commissioning Pyro-Chem kitchen fire suppression systems, the 551265 is an essential fire suppression tool that pays for itself on the first installation that avoids a re-inspection. It is available through authorized pyro chem distributors and is compatible with the Pyro-Chem Kitchen Knight II nozzle family. The pyro chem kitchen knight manual provides nozzle aim specifications for each appliance type — use the 551265 to verify compliance with each specification during installation commissioning and after any nozzle adjustment.

Installation Nozzle Aiming

During new Pyro-Chem system installation, use the 551265 to verify each nozzle is aimed to the correct impact point per the pyro chem nozzle chart for each appliance type before tightening the nozzle locknut. Record the verified aim positions on the system as-built drawings. The 551265 eliminates subjective visual estimation and provides a documented, laser-verified aiming record that can be referenced during future inspections or AHJ reviews.

Post-Service Verification

After any service event that requires disturbing nozzle positions — system discharge, nozzle replacement, or piping modification — use the 551265 to re-verify all nozzle aim positions before returning the system to armed service. A nozzle that was correctly aimed before service may have shifted during the work. Laser verification after every service event is best practice for maintaining UL 300 compliance between scheduled semi-annual NFPA 17A and NFPA 96 inspections.

Does the 551265 work with ANSUL R-102 nozzles?

The 551265 is designed for Pyro-Chem Kitchen Knight II nozzle geometries. For ANSUL R-102 systems, an ANSUL-specific nozzle aiming device is available — the ansul nozzle chart and ansul r-102 nozzle chart specify the correct aiming tool for ANSUL nozzle configurations. Verify compatibility with your specific nozzle type before use. The 551265 "without adapter" version is for standard Pyro-Chem nozzles — an adapter version is available for nozzle configurations requiring the additional fitting.

Is this tool required by code?

NFPA 17A and NFPA 96 require that nozzles be aimed per the system manufacturer's specifications, but do not mandate the specific tool used to achieve correct aim. The 551265 is the most reliable and defensible method for confirming correct nozzle position — providing laser-verified documentation of compliance with the pyro chem nozzle chart aiming requirements that is far more precise than visual estimation alone.