What maintenance feature is essential for the automatic air supply of DPVs?

The essential maintenance feature for the automatic air supply of Deluge Pressure Valves (DPVs) is individual maintenance. This refers to the specific upkeep and servicing of each valve to ensure they function properly. Individual maintenance is crucial because it allows for the identification and correction of issues that may affect the operation of the air supply system.

With DPVs, the integrity and performance of the air supply directly impact their reliability in a fire protection system. By focusing on individual maintenance, technicians can address specific needs, such as checking for leaks, ensuring proper calibration, and verifying the operational readiness of each valve. This tailored approach guarantees that each component operates optimally when required, thus maintaining the overall safety and effectiveness of the fire protection system.

While aspects like continuous monitoring, remote control, and regular inspection can be important, they are broader concepts that do not specifically address the individual needs of each DPV unit like individual maintenance does.