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Products & Services > Regulator Selection Guide
Scott Specialty Gases
eQUIPsm GAS REGULATOR SELECTION GUIDE |
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Use of the proper gas regulator for reducing pressure of gases contained in high-pressure gas cylinders is critical. Using the wrong gas regulator can result in compromising gas purity or accuracy, premature equipment failure, or even personal injury. Our eQuip Regulator Selection Guide makes it easy to match the right gas regulator to the specialty gas you use. Simply specify the type of specialty gas you are using and eQuip will recommend the appropriate gas regulator(s) for your application.
A single-stage gas regulator reduces cylinder pressure to delivery or outlet pressure in one step and is recommended for use where inlet pressure does not vary greatly, such as with liquefied gases or where periodic readjustment of delivery pressure does not present a problem. A two-stage gas regulator reduces gas cylinder pressure in two steps and should be used when constant delivery pressure is needed with no periodic adjustment necessary. |
To begin your selection, select a gas service. |
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Pure Gas
A gas product whose composition make-up is primarily of one major compound, excluding any impurities in the product.
- Gas Mixture
A product whose composition is comprised of more than one major compound, with the majority of the product composed of the balance gas, and where the combination of the chemicals are not, whole or part, the result of a chemical reaction.
Pressure reducing gas regulators are used with the high-pressure gas cylinder or in a gas distribution line. They may also be used as part of a changeover manifold to simplify gas cylinder changeout procedure, or in a panel designed for use at the point-of-use in a laboratory. Gas regulators may be constructed of brass for use with noncorrosive specialty gases, or stainless steel for use with corrosive gases. Stainless steel gas regulators are also generally recommended when maintenance of gas purity is a concern. Please see our Technical Data page for more information about the selection, use and maintenance of gas regulators. Comprehensive information is also available in our Design and Safety Handbook, available here online in PDF or printed formats.
Some gas regulators are designed for general use and have elastomeric diaphragms. While they provide satisfactory performance is some applications, they should not be used where the possibility of slight contamination (cause by diffusion from the elastomeric diaphragm) is unwanted. A high-purity gas regulator is a better choice for most critical applications because it eliminates the possibility of contamination through the use of a stainless steel diaphragm.
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