A quick coupler is a connector designed to allow hoses, pipes, or firefighting equipment to be attached or removed quickly without tools. It uses a locking mechanism (such as spring-loaded balls or a latch system) to create a secure and leak-resistant connection, ensuring reliable water flow during operations. These couplers are widely used in firefighting systems, compressors, and high-pressure fluid lines because they improve efficiency and reduce the time needed to set up or disconnect equipment.