What type of couplings are connected using locks or cams rather than screw threads?

Storz couplings are designed specifically for quick coupling and uncoupling of hoses, particularly in fire suppression systems. These couplings use a locking mechanism and cam system to create a secure connection that can be easily engaged or disengaged without the need for screwing threads. This mechanism allows firefighters to rapidly connect hoses, which is critical in urgent situations, ensuring efficiency and speed in deploying water sources during emergencies.

The unique design of Storz couplings eliminates the risk of cross-threading, a common issue with screw-threaded couplings, and offers a more reliable seal under pressure. Their use in fire services is widespread due to the ease of operation, even while wearing gloves, which is essential in high-stress scenarios. The focus on speed and reliability makes Storz couplings the preferred choice in many fire suppression applications.