The 202 Series single stage regulator provides primary pressure control of non-corrosive, liquefied, or high purity inert gases (up to grade 4.5). Due to the pressure rise associated with high pressure cylinder depletion, CONCOA recommends single stage regulators for primary pressure control in applications that can tolerate minor fluctuations in outlet pressure due to diminishing inlet supply or where inlet pressure is constant or under 500 PSIG (34 BAR).