The Pin Index Oxygen Regulator oxygen pressure reducer and flow controller is designed to reduce pressure and control oxygen flow from a cylinder or oxygen tank. The unit features a built-in flow control valve that maintains a pressure of 50 PSI and provides a variable flow rate within 0-25 LPM when supplied with a cylinder from levels that can be safely used by the end user. The ME7517 O2 Gas Regulator is designed to deliver oxygen to patients who need increased oxygen levels to improve breathing conditions.