Single stage, six-port, stainless steel barstock, cylinder regulator for corrosive and critical purity applications featuring a 316L stainless steel diaphragm; metal-to-metal diaphragm seal; maximum delivery pressure of 15 PSIG (1 BAR); 1/4-inch FPT port outlet; 1/4-inch FPT inlet; 0-4000 PSI/0-275 BAR dual-scale inlet gauge; 30VAC-0-30 PSI/-1VAC-0-2 BAR dual-scale outlet gauge; maximum inlet pressure of 3000 PSIG (210 BAR); full functional test and spectrometric helium leak check as an assembly; compliance with CGA E-4 (including 10,000+ cycle life); cleanliness exceeding CGA G-4.1; proof pressure 1.5x maximum working pressure and burst pressure at least 4X maximum working pressure (CRN-listed).