Why is a corporation stop required when tapping into a main water pipe under pressure?

A corporation stop is indeed required when tapping into a main water pipe under pressure because it serves as a control stop. When a tap is made, the corporation stop allows for the flow of water to be controlled, enabling technicians to shut off the flow for maintenance or emergency purposes without disrupting the entire water system. This is crucial in managing water supply effectively and safely, especially in cases where there might be a need for repairs or to prevent leakage during the tap installation.

The ability to control the water flow with a corporation stop prevents potential issues that could arise from uncontrolled water pressure, such as flooding or backflow. This device acts as a vital point in the water distribution system, providing flexibility and safety for maintenance operations.