Specialty Gas High-Purity Regulator - Airgas.com

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

High-Purity Pressure Regulators

Brass Line Regulator Models- This series of brass high-purity, singlestage line regulators is recommended for applications where diffusion resistance is required. These regulators are recommended for use on low-pressure gas lines serving gas chromatographs, mass spectrometers, research sampling systems, and semiconductor processing. The specially designed, convoluted, stainless steel diaphragm provides accurate, stable delivery pressure and is capable of withstanding internal vacuum purging.These units are easily panel-mounted using the optional panel-mount nuts with the threaded bonnet. Two 10 x 32 UNF-threaded holes in the body allow for bracket or external panel mounting. The optional bonnet vent adaptor allows venting of hazardous gases in the event of diaphragm failure.

Brass Single Stage Models- These brass, single-stage, high-purity regulators are recommended for non-corrosive analytical and process applications where precise flow control is not critical. A specially designed, convoluted, stainless steel diaphragm provides good regulating performance and maximum purity integrity without the need for a soft seal, which often can be a source of contamination.

The regulator includes our patented Smart Purifier Base and cartridge on the A, B and D series. The CGA nipple has a special high-purity, non-lubricated check valve incorporated into nose, and a safety relief valve to protect the purifier and any equipment downstream. Each regulator is capable of withstanding an internal vacuum and is provided with a diffusion-resistant, diaphragm packless outlet valve to maintain system purity. The optional bonnet vent adaptor allows for the venting of hazardous gases in the event of diaphragm failure.

Brass Two-Stage Models- This series of two-stage, high-purity regulators is designed for non-corrosive analytical and process applications requiring precise, stable, delivery pressure control. The two-stage design yields a delivery pressure of less than 0.04/100 psi inlet change. The regulator includes our patented Smart Purifier Basse and cartridge on the A, B and D series. The CGA nipple has a special high-purity, non-lubricated check valve incorporated into nose, and safety relief valve to protect the purifier and any equipment downstream. This regulator also has both a front and rear panelmount bonnet to allow for easy panel mounting.

Convoluted stainless steel diaphragms provide excellent regulating characteristics and allow for internal vacuum purging. The metal-to-metal diaphragm seal prevents contamination by eliminating the need for a soft seal and provides a leak-rate design of less than 2 x 10-8 ccs helium. This minimizes cleanup time in vacuum purging and yields lower residual contaminant levels. A diaphragm packless outlet valve with a 1/4" Swagelok® fitting is provided for flow control and to maintain system purity. Captured bonnet ports with optional vent adaptors are standard on both stages and allow for the venting of hazardous gases in the event of diaphragm failure. These regulators are ultrasonically cleaned for the most demanding high-purity service.

Stainless Steel Line Models- This series of stainless steel high-purity, single-stage line regulators is recommended for applications where diffusion resistance is required. These regulators are recommended for use on low-pressure pipelines serving gas chromatographs, mass spectrometers, research sampling systems, and semiconductor processing. The specially-designed, convoluted stainless steel diaphragm provides accurate, stable delivery pressure and is capable of withstanding internal vacuum purging. These units are easily mounted to panels using the optional panel-mount nuts with the threaded bonnet. Two 10 x 32 UNF-threaded holes in the body allow for bracket or external panel mounting. The optional bonnet vent adaptor allows venting of hazardous gases in the event of diaphragm failure.

Stainless Steel Single-Stage Models- These stainless steel single-stage high-purity regulators are recommended for non-corrosive analytical, mildly corrosive and process applications where precise flow control is not critical. A specially designed, convoluted stainless steel diaphragm provides good regulating performance and maximum purity integrity without the need for a soft seal, which often can be a source of contamination. Each regulator is capable of withstanding an internal vacuum and is provided with a diffusion-resistant, diaphragm packless outlet valve to maintain system purity. The optional bonnet vent adaptor enables venting hazardous gases in the event of diaphragm failure.

Stainless Steel Two-Stage Models- This series of stainless steel two-stage high-purity regulators is designed for non-corrosive analytical, mildly corrossive and process applications requiring precise, stable delivery pressure control. The two-stage design yields a delivery pressure change of less than 0.04/100 psi inlet change. Convoluted stainless steel diaphragms provide excellentregulating characteristics and allow for internal vacuum purging. The metal-to-metal diaphragm seal prevents contamination by eliminating the need for a soft seal and provides a leak-rate design of less than 2 x 10–8 ccs helium. This minimizes cleanup time in vacuum purging and yields lower residual contaminant levels.

A diaphragm packless outlet valve with a 1/4" compressiontube fitting is provided for flow control and to maintain system purity. Captured bonnet ports with optional vent adaptors are standard on both stages and allow the venting of hazardous gases in the event of diaphragm failure. These regulators are ultrasonically cleaned for the most demanding high-purity service.

Stainless Steel Positive-Seal- These single- and two-stage positive-seal regulators feature convoluted, stainless steel diaphragms that provide maximum sensitivity, minimum droop and a leak-tight bonnet seal. Type 316 stainless steel internal components are ultra-sonically cleaned and electropolished to a 15-Ra surface finish for applications where a contamination-free flow stream is critical.

A rugged, mechanical linkage connecting the diaphragm and valve stem significantly reduces the possibility of pressure creep. A PCTFE seat provides positive closure and is compatible with a wide range of mildly corrosive or corrosive gases. Each single-stage positive-seal regulator is designedwith two 10 x 32 UNF-threaded body holes for bracket or panel mounting.

Stainless Steel Two-Stage Models (Threaded Seat) - This series of two-stage, high-purity stainless steel regulators is designed for non-corrosive analytical and process applications requiring precise, stable delivery pressure control. The two-stage design yields a delivery pressure change of less than 0.04/100 psi inlet change. Convoluted stainless steel diaphragms provide excellent regulating characteristics and corrosion resistance, and the threaded-seat design allows for internal vacuum purging. The metal-to-metal diaphragm seal prevents contamination by eliminating the need for a soft seal and provides a leak-rate design of less than 2 x 10–8 ccs helium. This minimizes cleanup time in vacuum purging and yields lower residual contaminant levels. A diaphragm packless outlet valve with a 1/4" Swagelok® fitting is provided for flow control and to maintain system purity. Captured bonnet ports with optional vent adaptors are standard on both stages and allow the venting of hazardous gases in the event of diaphragm failure. These regulators are ultrasonically cleaned for the most demanding high-purity service.

High-Purity Absolute Pressure- This absolute pressure regulator is capable of accepting a line pressure of atmospheric to 120 psig and reducing it to within sub-atmospheric to 15 psig. This regulator is designed for high-purity gas systems and systems which handle highly corrosive media. Only 316 stainless steel and Teflon® material are in contact with the flow media. This regulator utilizes a soft-seated main valve for tight shutoff in dead-end applications and a metal diaphragm sensing element for enhanced pressure-control sensitivity.

E-Z Mount Models- This series of panel-mounted single- or two-stage high-purity regulators is recommended for precise delivery pressure and ease of mounting. Use the stainless steel models for mildly corrosive mixtures and the brass models for non-corrosive applications. We recommend two-stage regulators for high-pressure cylinders. The single-stage series is designed for low pressure liquefied cylinders and comes with a six-foot pigtail. Stainless steel diaphragms provide good regulating performance and maximum purity integrity without the need for a soft seal, which often can be a source of contamination.

The panel-mount design lets you easily attach the regulator to a wall or mounting rack. The unit comes fully assembled and can be mounted in a matter of minutes. This panel can eliminate regulator or process tubing damage associated with dropping the regulator during cylinder change out.

The flexible hose has a check valve incorporated in the CGA to minimize contamination during change out. The hose has 316 corrugated stainless steel internal construction for leak-tight operation. This construction eliminates permeation or off gasing as is commonly experienced with elastomeric or Polymeric construction, including Teflon®-lined hose. The flexible hose and mounting of the regulator prevents the process tubing from kinking during cylinder change out.

Each regulator is capable of withstanding an internal vacuum and is provided with a diffusion-resistant, diaphragm packless outlet valve to maintain system purity. The optional bonnet vent adaptor allows for capturing and safely venting any hazardous gases in the event of diaphragm failure.

Low-Flow Two-Stage Models- These two-stage regulators are specifically designed for low-flow, non-corrosive gas applications where precise delivery pressure is critical. They feature a brass piston sensor in the first stage, a stainless steel diaphragm in the second stage and a preset safety relief valve. A sintered brass filter protects internal parts. These two-stage regulators are also ideal for medical diagnostic applications, such as blood gas analysis, where precise pressure control and low flow rates are required. They are available with a CGA cylinder valve connection for use on large cylinders, or a 973 pin-indexed yoke connection for use with E medical cylinders.

High-Flow Models- This series of regulators is used for applications requiring high gas flow rates and a compact design. These regulators can handle flows up to 250 liters per minute of nitrogenwith only a 5 psig pressure drop. In addition, these units will handle hydrogen flow up to 1,000 liters per minute without the resonance problems associated with other regulators in this same application.

Single-Stage Mini Models- These compact, single-stage general- purpose and analytical series regulators are ideally suited for lecture bottles and other small cylinders. They are equipped with a CGA 180 connection for easy attachment to Airgas lecture bottles. Other CGA connections are available upon request. Rated to 3,000 psig, these regulators feature a built-in, non-lubricated needle valve that has been designed to regulate outlet flow. Choose a brass model for non-analytical, non-corrosive service; an aluminum model for mildly corrosive service or a stainless steel model for corrosive service.

Two-Stage Mini Models- These compact, two-stage analytical series and high-purity stainless steel regulators are ideally suited for lecture bottles and other small cylinders. They are equipped with a CGA 180 connection for easy attachment to Airgas lecture bottles. Other CGA connections are available upon request, as the regulator is rated for 3,000 psig inlet pressure. This regulator also features a non-lubricated needle valve, designed to regulate outlet flow. Choose a brass model for analytical or non-corrosive service or a stainless steel model for mildly corrosive service. If used in corrosive service, a cross-purge assembly must be used.

High-Purity Back-Pressure- These back-pressure regulators control the inlet pressure rather than outlet pressure. They are very similar to relief valves in operation and are actually used as relief valves in many applications requiring high sensitivity and close tolerances on crack/reseat pressure relationships. This compact series of regulators is hand-adjustable and spring-loaded. A diaphragm sensor provides precise pressure control.