Description Specifications Literature Description The PR-1 Series is a versatile pressure reducing regulator designed to fulfill a wide range of needs in instrumentation sample systems and other applications such as semiconductor processing gases. Many features of the PR-1 make it ideal for a wide range of applications controlling pressures at low to moderate flows in gas or liquid service. Stainless steel caps and adjusting screws prevent atmospheric corrosion and maintain appearance. Enhanced internal body surface finish of better than 25 Ra plus electropolishing allows easier cleaning and potentially less particle contamination in the flow stream.Three different seat materials, three alternate orifice sizes and 7 pressure control ranges with INCONEL® diaphragms offer the user a wide spectrum of capabilities for pressure control with inlet pressures up to 6000 PSIG and standard operating temperatures up to 500° F (260° C). Features and Specifications Gas or liquid service 316L Stainless Steel, INCONEL®, PTFE, and Tefzel® (or optional main seat material choice) only in flow stream Electropolished 316L body with better than 25 Ra diaphragm cavity surface finish Stainless steel cap with SS adjusting screw Inlet pressures of up to 6000 PSI Adjustable outlet pressure ranges of 0-10, 0-25, 0-50, 0-100, 0-250, 0-500, and 0-750 PSIG Operating temperatures of -40° F up to +500° F (-40° C up to +260° C) 20 micron filters Bubble-tight shutoff under most conditions Cv flow coefficients 0.025, 0.06, 0.20, and 0.50 (0.06 standard) Options Wetted materials of construction: MONEL®, HASTELLOY®, Titanium and 6MO Panel mount (1 ⅜" mounting hole) Special diaphragm assembly for water service SS inlet pressure gauges SS outlet pressure gauges Base-mounting brackets Captured vent Self-relieving State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Body Material316L Stainless SteelPort ConfigurationCProcess Port Type¼" FNPT (¼" FNPT gauge ports), StandardSurface Finish of Diaphragm Cavity< 25 Ra, StandardSeat MaterialTefzelFlow Coefficient (Cv)0.06Outlet Range0-50 PSIGDiaphragm TypeStandard DiaphragmDiaphragm Facing/Backing MaterialPTFE/Metal Backing, StandardCap AssemblyStandard, Stainless Steel Literature & Docs Accessories