Series UPRS Downstream pressure reducing valve features full shutoff design (pressure will not equalize in a no-flow condition) and the ultimate purity levels, as verified by independent test labs. BCF spigots standard; flare, sanitary, and other connection types available. 25 – 63mm sizes; Kynar 740 body. High purity CDB-16 (8 hour hot / 8 hour cold DI rinse) procedure is standard; clean and double bag in class 100 (ISO 5) clean room. Ultimate purity with excellent flow performance; set pressure range 5-100 PSI. Available with or without isolated pressure gauge.