In this video, we will discuss prds system power plant. prds system plays an important role in power plant operation. we will take a comment for prs and dsh valve in prds system. we will discuss the role of instrumentation in prds. engineering study is a youtube channel that uploads instrumentation engineering videos and power plant videos. this video is helpful for field instrumentation and power plant operation. prs is pressure reducing superheating and a pressure reducing valve. dsh is desuperheating and a temperature reducing valve. prds system in power plant helps to create the vacuum in turbine.