Single vs Two Stage Regualtors:
Single stage regulators are the most popular and the least expensive. Single stage regulators reduce the cylinder pressure to the outlet pressure in one step. Two stage regulators reduce the cylinder pressure in two steps.
The single stage regulators are use in most general welding / cutting applications. These applications do not require an exact outlet delivery pressure throughout the cycle of the cylinder from full to empty. As the cylinder decreases in pressure the delivery outlet pressure will increase.
Two stage regulators are used when an outlet delivery pressure needs to be maintained at all times. Applications would be lab, gas chromatograghy or precision welding. The gas is regulated in two steps for greater delivery accuracy. The first stage is preset and the second stage is fully adjustable to the regulator delivery range.
Gauges: Most regulators are supplied with two gauges. The number of gauges does not determine if it is a single or two stage regulator. The gauges are used to determine amount of gas remaining in the cylinder and outlet delivery pressure. The high pressure gauge located next to the inlet port is used to determine amount of gas remaining in cylinder. The low pressure gauge next to the delivery port is the delivery pressure gauge.
Weldfabulous
Brad M. Musech
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