How the Gas Pressure Regulator Helps You Get the Most Out of Compressed Gases

Compressed gas producers like Greco Gas often put forth a lot of effort to fulfill their Pittsburgh customer’s specific needs when it comes to accuracy, purity, and various other specifications. Most of these specialty gases are shipped in traditional high-pressure cylinders, and others are shipped in bulk, smaller containers, or dewars. Regardless of the delivery method, these gases will eventually face handling, distribution, and regulation by the Pittsburgh consumer. Throughout this, the gases see several different types of  gas equipment and methods of handling that will either lessen or uphold its purity.

Gas handling systems can vary from being very complicated to quite simplistic. But regardless of its configuration, the gas delivery system can have a striking effect on the purity of the gas and is an item that should never be underestimated. In addition, the employment of certain toxic gases can introduce safety hazards if they are not utilized with the proper equipment.For this reason, Greco Gas strives to ensure that we are always using the best equipment and that our Pittsburgh customers are as well

The purpose of gas regulators in gas delivery systems is to lessen the pressure from a high-pressure origin to a pressure level that is sufficient for use. The right regulator protect the gas’s purity while simultaneously delivering it without harm. Because of its importance, there are quite a few different elements to contemplate when deciding on the correct regulator for a job.

The primary element to take into consideration when selecting a regulator is the level of purity that is called for in the application. The three purity levels found in most applications are: general purpose, high-purity, and ultra-high purity.

As an example, if an application calls for high-purity gas, then as a result, a high-purity regulator should be employed in place of a general-purpose or other inadequate regulator. At the very least, regulators that are employed in delivery systems should be washed by the supplier to assure both cleanliness and safe employment.

Another thing that needs to be taken into consideration when choosing the proper regulator is the regulator’s body type. The bodies of regulators can be either generated from barstock or forged. Forging is applied with only brass; barstock, however is used for stainless steel, brass, and other materials. There are several reasons for which barstock bodies are preferred for high-purity applications. One reason is its small internal volume which makes it easier to purge, thus allowing the removal of moisture and impurities. Likewise, barstock has a smoother internal surface which reduces the number of contaminants that are retained inside. To conclude, the grain structure of the metal is tighter in barstock, meaning it absorbs less moisture and impurities.

In regards to materials of construction, brass is the material used most frequently in pressure regulators. In specific higher-purity employments or in circumstances where brass is incompatible with the gas being employed, other materials such as stainless steel are used. Gases with corrosive properties might need corrosion-resistant materials for all wetted parts, but flammables and inert gases are typically compatible with brass and most other materials. 316 stainless steel is most commonly used in operations that need corrosion-resistant materials.

Forged brass bodies are most often employed with the lowest-purity gas, and in the lowest-cost regulators. Brass barstock bodies, however, have smoother internal finishes and smaller internal volumes giving them the ability to maintain noncorrosive gases with higher purity levels. For semi-corrosive or corrosive gases or gas mixes and higher-purity demands, stainless steel should be utilized. For gases that are highly corrosive, Monel or Hastelloy should be the materials utilized since they lead to more corrosion resistance.

Greco Gas offers a wide variety of gas regulators and other specialty gas equipment that will help Pittsburgh customers accomplish all of their specialty gas applications in the safest, most reliable, and most effective way. To learn more about Greco Gas's specialty gas equipment and other specialty gas products offered by Greco Gas in Pittsburgh, browse our catalog or contact us at (724) 226-3800 or via email at