Final answer:
Dual port valves have two independent capacities, allowing for control of two separate flow paths, which makes them suitable for systems requiring intricate flow control.
Step-by-step explanation:
Dual port valves typically have two independent capacities. This means that they include two separate flow paths that can be controlled independently. The design of dual port valves allows them to control the flow of two different fluids, or to manage two separate flow rates in a single system. These valves are commonly found in applications that require intricate control of the flow, such as in heating, ventilation, and air conditioning (HVAC) systems, where they may be used to regulate the temperature in different zones independently.