Nozzle Swivel Adaptor 423572

The Nozzle Swivel Adaptor (Part No. 423572) is a high-precision OEM mounting component designed for the directional calibration of discharge nozzles across Ansul R-102, Ansul Piranha, and Pyro-Chem Kitchen Knight II systems. While standard pipe fittings provide fixed 45-degree or 90-degree turns, the 423572 offers a versatile ball-and-socket swivel range that allows technicians to perform fine-tuned angular corrections. This ensures the suppression agent strikes the exact nozzle aiming point (NAP) required for UL 300 compliance.

Manufactured from heavy-duty machined brass, the 423572 is engineered to maintain a gas-tight seal even under high-pressure discharge. It features a locking compression nut that secures the nozzle's orientation, preventing aim-drift caused by the extreme vibrations of industrial exhaust fans or accidental contact during hood cleaning. For fire protection contractors, this adaptor is a strategic universal component that simplifies the installation of complex kitchen manifolds where appliances are not perfectly aligned with the overhead piping.

The 423572 must be installed by a licensed fire suppression technician in accordance with the applicable system design manual. Before tightening the compression nut, the technician should use the Ansul laser aiming tool to verify the nozzle is directed at the correct NAP for the protected appliance. Once the correct angle is confirmed, the compression nut must be tightened to the manufacturer's specified torque to lock the swivel and prevent aim-drift during operation.

During each semi-annual inspection, technicians must verify the compression nut remains fully tightened and that the nozzle aim has not shifted due to hood cleaning activity or equipment movement. If the nozzle orientation has drifted, the system must be re-aimed and re-locked before the inspection can be signed off. Any adaptor showing signs of corrosion, thread damage, or seal leakage must be replaced with a new OEM 423572 to maintain the system's UL listing.

How does the 423572 achieve a seal while remaining adjustable?

The adaptor utilizes a precision-machined internal seat that allows for angular movement while maintaining metal-to-metal contact. Once the desired angle is achieved, tightening the compression nut locks the nozzle, ensuring that the hydraulic discharge pressure is delivered without leakage at the swivel junction.

Is this adaptor compatible with both "Old Style" and "New Style" nozzles?

Yes. The 423572 is designed with standard NPT threading that accepts both legacy and modern Ansul and Pyro-Chem nozzles. This makes it an ideal component for suppression system retrofits, allowing technicians to meet modern aiming standards without replacing the entire piping network.

Why is a swivel adaptor preferred over a standard 45-degree elbow?

A fixed elbow limits you to a single discharge path. The 423572 allows you to sweep the nozzle's aim to compensate for appliances that have been moved. This directional flexibility is the difference between a system that passes an AHJ inspection and one that requires costly re-piping.