Which type of valve maintains a specific flow rate regardless of pressure fluctuations?

A regulating valve is specifically designed to maintain a consistent flow rate in a piping system, regardless of any fluctuations in pressure. This is accomplished through the use of a feedback mechanism within the valve that adjusts the opening to compensate for variations in upstream or downstream pressures. By doing so, the regulating valve can ensure that the flow remains constant, which is crucial in many applications where precise flow control is required.

In contrast, a check valve allows fluid to flow in one direction but does not regulate the flow rate. A globe valve can be used for flow control but is not specifically designed to maintain a constant flow rate under changing pressure conditions. A ball valve typically provides quick shutoff capabilities and is not intended for precise flow regulation. Thus, the distinctive capability of the regulating valve to maintain specific flow rates makes it the appropriate choice in this scenario.