What is the difference between a single-stage and a dual-stage regulator?

Single-stage regulators decrease pressure in just one step to effect pressure within a specified range. Regulators crafted in this manner will show a negligible variation in delivery pressure as the cylinder pressure decreases during use. For this reason, single-stage regulators are best suited for uses where a constant outlet pressure is not urgent, where an operator can monitor and readjust pressure, or where inlet pressure is stable.

Dual-stage regulators serve the same function as single-stage regulators. Nevertheless, delivery pressure stays steady as cylinder pressure declines. Greater accuracy in pressure control is sustained because the pressure reduction is delivered in two steps. Dual-stage regulators are favored for applications necessitating a constant outlet pressure for the life of a gas cylinder.

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