STI STI-14200NR-Z003 Universal Stopper Fire Sprinkler Tool

Overview

The STI-14200NR-Z003 is a reusable mechanical stopper tool designed to stop water flow on individual fire sprinkler heads without requiring system shutdown — a critical capability when responding to accidental activation, leaks, or damaged sprinklers in occupied buildings. One-hand operation allows a single technician to isolate a compromised head while maintaining full system pressurization for remaining coverage. The tool works on ½" and ¾" sprinkler heads across upright, pendant, sidewall, intact, damaged, recessed, and sheared configurations, making it genuinely universal across common sprinkler types.

Compatibility

Works on standard ½" and ¾" fire sprinkler heads (upright, pendant, sidewall variants). Compatible with both intact and damaged sprinkler heads, including recessed or sheared installations. Rated to 350 PSI (2400 kPa), covering virtually all standard commercial fire suppression systems operating at design pressures up to 175–200 PSI, with margin for transient spikes. No system-specific electronics or integration required — mechanical compatibility only.

Installation Notes

Lightweight and portable — designed for emergency deployment from a mounted cabinet or maintenance kit. No tools required for operation; one-hand actuation by trained personnel. Tested to 350 PSI, ensuring reliability across pressure excursions. Storage cabinet available separately (reference STI documentation for cabinet part numbers) to keep the tool immediately accessible at points of risk (data centers, server rooms, clean rooms, warehouses).

What's in the Box

1x STI-14200NR-Z003 Sprinkler Stopper Tool with cover

STI Quickstop Fire Sprinkler Tool - STI-QT

Reusable manual shut-off tool designed to stop water flow from fire sprinkler heads without deactivating the entire system

Stops water flow on ½" and ¾" sprinkler heads without shutting down the full system.
Rated to 350 PSI (2400 kPa), compatible with standard municipal and commercial system pressures.
Works on intact, damaged, sheared, and recessed heads — covers emergency and retrofit scenarios.

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STI STI-1314

STI STI-1314 Universal Stopper® Backplate

Provides standardized mounting interface for Universal Stopper® electric strike systems.
Operates on 9VDC, simplifying power integration into existing access control infrastructure.
Suits commercial and institutional door hardware deployments requiring electric strike control.

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