Which regulator is best for you?

A gas regulator is a piece of equipment that moderates the gas pressure in a cylinder. Most cylinders have regulators with 2 gauges. Some regulators that are used on cylinders with gases that have turned to liquids, might not have a cylinder pressure gauge because the cylinder pressure changes only with temperature. The two most important variables that will determine whether a single stage or dual stage regulator should be used are droop and supply pressure effect.

Droop is the difference in delivery pressure between zero flow and the regulators maximum gas capacity. Supply Pressure is the variation in delivery pressure as supply pressure decreases while the cylinder is emptying. A dual stage regulator shows more droop than pressure effects, while a single stage regulator should be utilized when there is little anticipation of pressure variation or where occasional pressure adjustments are not problematic. Single stage regulators in general are best for shorter duration gas usage. Most manufacturers will utilize a dual stage regulator because it provides a constant delivery of pressure with no need for periodic readjustment.

Both single and dual stage regulators are equipped with 2 gauges, cylinder or inlet pressure gauge and a delivery or outlet pressure gauge. A cylinder pressure gauge has a higher pressure range compared to a delivery pressure gauge.

Again, whether a manufacturer chooses to use a single or dual stage regulator will depend on the application. To find out more on which regulator is most useful for you, please contact one of our local PurityPlus Partners.