Description Specifications Literature Description To meet the demands for the safe reduction of inlet pressures up to 10,000 PSIG, GO Regulator has designed the PR-57 Series regulator. This precision regulator features a piston sensing design which provides the operator with low adjusting torque requirements when setting the outlet pressure. The body is constructed from 316L stainless steel, providing the ultimate in safety and corrosion resistance.The optional self-relieving feature provides an additional level in operational ease, as it allows for trapped downstream pressure to be safely vented to atmosphere through the bonnet. Features and Specifications Gas or liquid service 316L Stainless Steel construction Better than 25 Ra finish in diaphragm cavity Stainless steel spring loaded piston sensor 20 micron filter Bubble-tight shutoff Viton® seals (other elastomers optional) Inlet pressure maximum 10,000 PSIG Outlet pressure ranges are 0-250, 0-500, 0-750, 0-1000, 0-2000, 0-4000, 0-6000, 0-7500 and 0-10,000 PSIG ¼" FNPT standard Operating temperatures -40° F to +150° F (-40° C to +66° C) Cv flow coefficient 0.05 or 0.2 Options Gauges and CGA fittings for cylinder gas application Self-relieving and captured vent ⅜" FNPT State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Body Material316L Stainless SteelPort ConfigurationLProcess Port Type¼" FNPT (¼" FNPT gauge ports)Surface Finish of Diaphragm Cavity< 25 RaSeat MaterialPolyimideFlow Coefficient (Cv)0.2Outlet Range0-4000 PSIGPiston TypeSelf-relievingPiston MaterialStainless Steel/PTFE Cavity O-ringCap AssemblyStainless Steel Literature & Docs Accessories