Info 22/20Potential Hazards of Quick Release Cylinder Valves Used with Firefighting Gases

Several incidents with quick release cylinder valves that are used on some firefighting system gas cylinders have been reported.

In all cases, the cause of the incidents was either the unexpected or intentional opening of the valve fitted to the gas cylinder during handling, filling, or venting of the cylinder. The consequences were that the cylinders went out of control after the valve opened.

These valves are designed to quickly release a large volume of gas.

This publication provides guidelines for the handling of gas cylinders during filling, storage, discharge, maintenance, periodic inspection, and transport equipped with quick release cylinder valves used in firefighting systems.

Quick release cylinder valves are used on cylinders typically containing carbon dioxide, nitrogen, or gas mixtures in firefighting systems.