DR20SF PRV is offered with 316L stainless steel wetted parts for corrosion resistance. The pressure-reducing valve is designed for pure and clean steam applications. It has a Class 4 seat-leakage rating to provide a high-flow rate and deliver a tight shutoff. It is available in 0.5, 0.75 and 1" NPT. The flow-up and flat valve-and-plug design increase secondary pressure stability.