Single Stage Regulator Vs Double Stage

 Single Stage Regulator vs Double Stage Single Stage Regulator reduces pressure in a single step to deliver a pressure within a specific range. Regulators  designed in this way will show a slight variation in delivery pressure as the cylinder pressure falls during use. For this reason, single stage regulators are best suited for applications where a constant outlet pressure is not critical, where an operator  can monitor and readjust pressure, or where inlet pressure is constant Double stage regulator performs the same function as single stage regulator. However delivery pressure remains constant as cylinder pressure decreases and greater accuracy in pressure control  is maintained because the pressure the pressure reduction is performed in two steps. Double Stage regulators are recommended for applications requiring a constant outlet pressure over a life of a gas.