What is the term for the minimum cross-sectional area at the water supply discharge point?

The term that signifies the minimum cross-sectional area at the water supply discharge point is known as the "Effective Opening." This concept is crucial in plumbing design as it impacts the flow rate of water being discharged from fixtures or systems. The effective opening refers to the precise size and shape of an opening allowing fluid to pass through, determining how easily water can flow.

This is especially important in applications like faucets and valves, where the design must accommodate the expected water pressure and flow requirements. Having the correct effective opening ensures optimal performance and prevents issues such as reduced flow or pressure loss, which can significantly affect plumbing systems.

While terms like supply diameter and cross-sectional area may describe certain aspects of plumbing measurements, they do not specifically refer to the critical size necessary for the water supply discharge point, as "Effective Opening" does. Discharge point, on the other hand, generally refers to the location where water exits the supply line but lacks the specificity regarding the dimensions important for ensuring efficient water flow.