RADNOR™ RC450-15-510 is recommended for applications where slight delivery pressure increases (due to decreasing cylinder pressures) would not affect the performance characteristics of the work or test results. Heavy duty gas control with tried and true brass design delivers excellent gas control characteristics that meets the demands of precise cutting, welding and heating applications. The RC450 regulators are designed for heavy to high capacity. Delivery Range 2-15 psig. Maximum Inlet Pressure is 3,000 psig.