Specialty Gas Pressure Regulators-SIR Series - Airgas.com

Specialty Gas Regulators
Pressure Regulators- SIR Series
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To view SIR Series Pressure Regulators in the Specialty Gas Equipment Manual click here(PDF).

Pressure Regulators - SIR Series

Smart Indicating Line Regulators- This newly patented AirgasĀ® Smart Indicating Line Regulator (SIR™) provides final point of use pressure control while maintaining gas purity for gases 99.9999% pure or better. The SIR line regulator safeguards the instrument from contaminates that are in the gas stream. These may be from system leaks, components in the gas deliver system, or have entered the system during cylinder change out. The SIR line regulator safeguards the instrument or process if a lower grade of gas has been connected to the system or a purity issue exists with the gas. SIR regulators also provide a visual indication if leaks have developed downstream of the regulator. The purifier turns color if there is a problem in the gas stream. When the purifier changes color from the top down, it is removing impurities in the gas stream. These impurities may be from gas that is less than 99.9999% pure or from contaminants that entered the gas stream during cylinder change out. If the purifier turns color from the bottom up, the system has a leak downstream of the regulator. When the entire purifier has changed color, it simply needs to be replaced. The purifier has a patented quick-change base to allow for easy change out of spent purifiers. The base has integral check valves built into the self-piercing connectors. These check valves allow the spent purifier cartridge to be changed without exposing the gas stream to contamination. The regulator portion is specially cleaned for all analytical applications and will not generate contaminates that consume the purifier. The built-in safety relief valve protects instruments downstream, as well as the purifier, in the event of a regulator failure.

Smart Indicating Brass Single-Stage Regulators- This newly patented single-stage Smart Indicating Regulator (SIR™) provides pressure control while maintaining gas purity for gases 99.9999% pure or better. The single-stage SIR safeguards the system from contaminates that normally enter the system during cylinder change out. The single-stage SIR safeguards the gas stream and process if a lower grade of gas has been connected to the system or a purity issue exists with the gas. SIR regulators also provide a visual indication if leaks have developed downstream of the regulator. The purifier turns color if there is a problem in the gas stream. When the purifier changes color from the top down, it is removing impurities in the gas stream. These impurities may be from gas that is less than 99.9999% pure or from contaminants that entered the gas stream during cylinder change out. If the purifier turns color from the bottom up, the system has a leak downstream of the regulator. When the entire purifier has changed color, it simply needs to be replaced. The Airgas single-stage SIR regulator, with the blockand- vent valve assembly incorporated into the inlet, will completely contain and remove all contaminants from entering the gas stream that occur during cylinder change out. The inlet assembly has a CGA nipple with an integral check valve. This check valve prevents mass contaminates from entering the regulator. The small amount of air and moisture introduced during cylinder change out are trapped between the nose of the CGA and the inside of the cylinder valve. The vent valve is specially designed to create a vacuum which totally removes contaminates before they enter the process stream.The purifier has a patented quick-change base to allow for easy change out of spent purifiers. The base has integral check valves built into the self-piercing connectors. These check valves allow the spent purifier cartridge to be changed without exposing the gas stream to contamination. The regulator portion is specially cleaned for all analytical applications and will not generate contaminates that consume the purifier. The built-in safety relief valve protects instruments downstream, as well as the purifier, in the event of a regulator failure.

Smart Indicating Brass Two-Stage Regulators- This newly patented Airgas two-stage Smart Indicating Regulator (SIRTM) provides accurate pressure control while maintaining gas purity for gases 99.9999% pure or better. The two-stage SIR safeguards the system from contaminates that normally enter the gas stream during cylinder change out. The two-stage SIR regulator safeguards the gas stream and process if a lower grade of gas is connected to the system or if there is a purity issue with the gas. SIR regulators provide a visual indication if leaks have developed downstream from the regulator. The purifier turns color if there is a problem in the gas stream. When the purifier changes color from the top down, it is removing impurities in the gas stream. These impurities may be from gas that is less than 99.9999% pure or from contaminants that entered the gas stream during cylinder change out. If the purifier turns color from the bottom up, the system has a leak downstream of the regulator. When the entire purifier has changed color, it simply needs to be replaced. The Airgas two-stage SIR regulator, with the block-andvent valve assembly incorporated into the inlet, will completely contain and remove all contaminants from entering the gas stream that occur during cylinder change out. The inlet assembly has a CGA nipple with an integral check valve. This check valve prevents mass contaminates from entering the regulator. The small amount of air and moisture introduced during cylinder change out are trapped between the nose of the CGA and the inside of the cylinder valve. The vent valve is specially designed to create a vacuum which totally removes contaminates before they enter the process stream. The purifier has a patented quick-change base to allow for easy change out of spent purifiers. The base has integral check valves built into the self-piercing connectors. These check valves allow the spent purifier cartridge to be changed without exposing the gas stream to contamination. The regulator portion is specially cleaned for all analytical applications and will not generate contaminants that consume the purifier. The built-in safety relief valve protects instruments downstream, as well as the purifier, in the event of a regulator failure.

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