Which component is NOT part of the 81 AD non-surge check valve assembly?

The reason for identifying the electronic sensor as not being part of the 81 AD non-surge check valve assembly lies in understanding the function and design of the assembly. The 81 AD non-surge check valve assembly is primarily mechanical in nature, designed to prevent backflow in a fluid system by utilizing components such as the swing check valve, valve position indicator, and CV flow control.

The swing check valve is a key component that utilizes gravity to close the valve against reverse flow, ensuring fluid only moves in one direction. The valve position indicator is crucial for operators to visually confirm whether the valve is open or closed without needing to directly inspect the assembly. Additionally, the CV (constant volume) flow control part is integrated to manage fluid flow rate effectively through the system.

In contrast, the electronic sensor is typically used in more advanced or automated systems for monitoring and control, but it does not belong to the standard mechanical assembly of the 81 AD non-surge check valve. Therefore, it is excluded from the list of components associated with this valve assembly.