Which component is installed in the outlet of the discharge valve assembly of fire extinguishers?

In fire extinguishers, the installation of a cartridge (squib) and frangible disk type valve at the outlet of the discharge valve assembly is crucial for the proper functioning of the system. The squib is an electrically operated device that initiates the release of extinguishing agent when activated. It ensures that the extinguishing agent is released quickly and safely when needed.

The frangible disk serves an essential safety role by maintaining pressure within the extinguisher until it is time for discharge. Under normal conditions, it holds back the extinguishing agent, preventing accidental releases. When a signal is sent through the squib, it ruptures the frangible disk, allowing the pressurized agent to escape and effectively combat the fire.

This arrangement is designed to ensure immediate response in an emergency while maintaining safety standards under normal conditions. Knowing how these components work together is vital for understanding the operational safety and effectiveness of fire extinguishing systems. Other components like regulators, pressure gauges, or control switches have different functions and do not directly control the discharge process in the same manner.