Storz couplings operate by a _____ turn.

Storz couplings are designed to connect hoses and pipes efficiently, and they operate by a quarter turn mechanism. This means that once the coupling is aligned correctly, a quarter turn of the locking mechanism secures the connection. This design allows for quick and secure coupling, which is essential in emergency situations such as firefighting, where rapid deployment of water supply is necessary.

The quarter turn eliminates the need for threading, making it faster and easier to connect and disconnect hoses, ensuring that users can work effectively under pressure. This operational feature is particularly advantageous compared to other types of couplings that may require more intricate turns to secure the connection, thereby making the Storz coupling a preferred choice in various applications.