What types of valves does a triple duty valve incorporate?

A triple duty valve is designed to perform multiple functions in a piping system, specifically focusing on the management of fluid flow. The correct answer reflects that a triple duty valve incorporates isolation, check, and balancing functions.

Isolation valves are utilized to stop the flow of liquid in a system for maintenance or in emergencies. Check valves allow for one-way flow, preventing backflow and protecting the integrity of the system. Balancing refers to the adjustment of flow rates within the system to ensure that fluid is distributed evenly, promoting efficiency and optimal performance.

This multifunctionality is essential in various applications, notably in HVAC systems and water distribution. Each of these roles contributes to the overall control and safety of the fluid systems they are installed in, which is a key feature of the triple duty valve.

In contrast, other choices may mention functions that, while significant in other contexts, do not encapsulate the primary functions of a triple duty valve. For example, throttling and regulating pertain to flow control but do not include the critical isolating or checking capabilities inherent to a triple duty valve's design. Balancing is indeed a part of the correct answer, but it is uniquely characterized by the other two specified functions.