What does the abbreviation “DPD” signify in plumbing terminology?

The abbreviation "DPD" in plumbing terminology stands for Differential Pressure Detector. This device is used to measure the difference in pressure between two points in a system, which is critical for ensuring the proper operation of various plumbing and HVAC systems. By monitoring the differential pressure, the system can be maintained within its optimal operating parameters, helping to prevent issues such as backflow, system inefficiencies, and operational failures. The use of DPDs is prevalent in applications where fluid flow needs to be controlled, as they provide valuable data that can assist in troubleshooting and maintaining system integrity.