CSA ANSI Z21.18a-2010 (R2017)/CSA 6.3a-2010 (R2016) PDF
Details test and examination criteria for gas appliance pressure regulators for use with natural, manufactured and mixed gases, liquefied petroleum gases and LP gas-air mixtures. Such devices, either individual or in combination wit other controls, are intended to control selected outlet gas pressures to individual gas appliances.