GAS DATA & EQUIPMENT RECOMMENDATIONS
Pure Gases

The following information is provided as a guide to assist you in your choice of a pressure regulator for specific cylinder gases. It is divided into three distinct groupings--Pure Gases; Pure Gases in Lecture Bottles; and Two-Component Gas Mixtures.

To use this guide, simply locate the gas or gas mixture you are using within the appropriate grouping. The tables for Pure Gases, and Pure Gases in Lecture Bottles have their information initially arranged alphabetically by the gas of interest, and then secondarily alphabetized by the specific grade of that gas. The information in the Two-Component Gas Mixtures table is listed first alphabetically by minor component, and then alphabetically by the balance gas, or major component. For example, 2% Ammonia, 98% Helium would be listed first under Ammonia (the minor component), and then under "In Helium" (the balance gas) within the Ammonia grouping.

Across from each individual listing you will find that product's corresponding valve outlet connection number (CGA Connection); the recommended regulator model; and a reference page number directing you to where additional information and complete specifications on that regulator can be found. In the Pure Gas Table you will also find certain physical properties of the gas, such as chemical formula, molecular weight, vapor pressure (for liquefied gases), specific gravity and specific volume. In certain cases, where pressure reduction is not desired or required--as with very low pressure products such as Boron Trichloride--a manual control valve has been recommended instead of a pressure regulator. Please remember that Manual Control Valves control flow, not pressure.

You should note that the recommendations contained herein are valid, and generally preferred for the more common applications of the products indicated; and consideration has been given to safety, materials compatibility, as well as to convenience and suitability for these common applications. However, the recommendations shown may not be the only models that are suitable, and your specific application may have subtleties that would indicate another selection is a more preferable choice. If you feel this is the case, or if you are using a product that is not listed within these tables, please do not hesitate to contact one of our Technical Representatives, or your Advanced Specialty Gas Equipment Distributor to discuss your requirements.

Pure Gases