Hersill P-300, P40 Series Oxygen Pressure RegulatorCondition:* New Surplus Stock, In OEM Packaging. As Pictured.Additional Notes:* The highest flow vs pressure performance.* Maximum use of the oxygen volume of the cylinder.* Maximum output stability of pressure and flow over the entire cylinder pressure range.* Precise flow rates and safe overpressure flow valve with high evacuation capacity (< 10 bar), capable of releasing pressure in the event of any failure.* High stability and accuracy of output regulation= 4.5 0.5 bar.* For oxygen, air, CO2, N20, argon and their mixtures.* Materials: high-pressure stage in brass (matt chrome-plated), low-pressure in aluminium (matt chrome-plated) and TPE pressure gauge cover.* Flow Rate Accuracy: 20% (for flow rates > 1.5 L/min) 30% (for flow rates 1.5 L/min)* Closing Pressure: < 5.5 barHersill P-300