Specialty Gas Analytical Pressure Regulators - Airgas.com

Specialty Gas Regulators
Analytical Pressure Regulators
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View these Analytical Pressure Regulators in the Specialty Gas Equipment Manual here(PDF).

Analytical Pressure Regulators

Brass Line Regulators- This analytical series of high-purity brass, single-stage regulators is recommended for non-corrosive analytical and process applications. It is recommended to be located as close as possible to the pressure point to maintain constant pressure. This series is ideally suited for chromatographic carrier gas applications including FID, TCD, ECD, HID, and non-corrosive gas mixtures for analytical instrumentation. The regulator body is machined from brass bar stock, allowing minimal internal volume and eliminating large cavities and pockets associated with forged-body regulators. Nickel-plating keeps it looking good for a long time.

Single-Stage Brass Regulators- This analytical series of high-purity brass, single-stage regulators is recommended for non-corrosive analytical and process applications where precise pressure control is not required. This series is ideally suited for chromatographic carrier gas applicationsincluding FID, TCD, ECD, HID, and non-corrosive gas mixtures for analytical instrumentation. Machined from brass bar stock, this regulator body has minimal internal volume – there are no large cavities andpockets associated with forged-body regulators. These models feature dual filters to protect the valve seat from contamination, extending regulator service life while also reducing velocity of gas when opening high-pressure cylinder valves. An automatic reseating relief valve protects regulator components from over pressurization. Nickel-plating makes sure it looks good through many years of service.

Two-Stage Brass Regulators- This analytical series of high-purity brass, two-stage regulators is recommended for non-corrosive analytical and process applications where precise pressure control is required. This series is ideally suited for chromatographic carrier gas applications including FID, TCD, ECD, HID, and non-corrosive gas mixtures for analytical instrumentation. These units feature stainless steel diaphragms and bar stock bodies with low internal volume and minimal dead space. The two-stage design yields a delivery pressure change of less than 0.26/100 psi inlet change, making this one of the most accurate regulators available from full cylinder to empty. An automatic reseating relief valve protects regulator components from over pressurization while dual filters protect the valve seats and extend operating service life. These regulators are nickel-plated to maintain theirgood-looking appearance.

Gas Phase Dewar Service Regulators- This series of high-purity, single-stage regulators is designed for liquid cylinders, low-pressure mixes, and process applcations where precise pressure control is not required. These regulators are recommended for non-corrosive analytical and process applications. This series is ideally suited for gas phase pressure regulation in liquid cylinder applications. The regulator body is machined from brass bar stock, which decreases internal volume and eliminates the large cavities and pockets associated with forged-body regulators. Attractive nickel-plating looks good and lasts for years of service.

GC Series High-Purity Brass- This series of high-purity, two-stage regulators is recommended for non-corrosive analytical and process applications where precise pressure control is required. This series is ideally suited for chromatographic carrier gas applications including FID, TCD, ECD, HID, and non-corrosive gas mixtures for analytical instrumentation. These units feature stainless steel diaphragms and bar stock bodies with low internal volume and minimal dead space. The inlet on this model has a block-and-vent valve along with an integral check valve on the CGA. This allows you to contain and remove any contaminates that may enter the regulator during cylinder change out. This two-stage design yields a delivery pressure change of less than 0.26/100 psi inlet change, making this one of the most accurate regulators available from full cylinder to empty. An automatic reseating relief valve protects regulator components from over pressurization while dual filters protect the valve seats and extend operating service life. Nickel plating keeps these regulators looking good.

High-Purity Rear-Inlet Brass Single-Stage Models- This series of high-purity, brass single stageregulators is recommended for non-corrosive, analytical, and high-pressure process applcations whereprecise pressure control is not required. This series is ideally suited for chromatographic carrier gas applications including FID, TCD, ECD, HID, and non-corrosive gas mixtures for analytical instrumentation. The rear entry design makes it easy to fit up to liquid cylinders, hydrocrarbon cylinders, or to process lines. The regulator body is machined from brass bar stock, which eliminates the large cavities and pockets associated with forged-body regulators. The high-pressure models feature dual filters to protect the valve seat from contamination and extend regulator service life. Theyalso reduce velocity when opening high-pressure cylinder valves. An automatic reseating relief valve protects regulator components from over pressurization. Nickel-plating keeps the regulator looking good for years of service.

Analytical Tee-Purge Assemblies- Contamination cannot be tolerated in any high-purity analytical system. Even low levels of oxygen and water from the atmosphere can be extremely troublesome. An often-overlooked source of contamination may occur when changing cylinders. Atmospheric oxygen and moisture enter the regulator when it is disconnected from the cylinder. These contaminants become trapped in thehigh-pressure portion of the regulator upon connection to another cylinder. If allowed to remain, they are swept into the system. Depending upon the flow rate, these impurities can disrupt the process for days or even weeks. An analytical tee-purge assembly allows you to easily eliminate trapped impurities and replace them with the desired high-purity gas. Tee-purge assemblies have been designed for usewith high-purity regulators. Installed between the cylinder and the regulator, they enable you to removecontaminants before they enter the process by purging the system (including the regulator), with theprocess gas. All models have a multi-turn diaphragm valve and a check valve to prevent backflow of process gas into the purge line.

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