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                                          Advanced Specialty Gas Equipment

                                          BACK-UP SYSTEMS
                                          BRS Series
                                          High Purity, Back-Up Regulator Systems

                                          Model BRS-S-50The BRS Series System is designed to provide back-up gas supply where gas generators, compressors or house line gases are the primary source of process gas. The BRS Series allows supply systems to be turned off for service or maintenance without disturbing the gas flow or pressure to high purity applications. Unlike changeover systems, the Advanced BRS System automatically provides back-up gas on an as needed basis, buffering deficiencies in supply pressure. The system activates (backs-up) when the supply pressure drops below the BRS preset pressure and deactivates when the supply pressure rises above the preset pressure allowing for the primary source of gas to flow. Monitoring or operator adjustments are not required during the back-up activation or deactivation.

                                          Model BRS Installed as Back-up for Gas GeneratorThe BRS System design incorporates a two-stage regulator, line regulator and in-line check valves. Diaphragm seal valves allow for either supply pressure isolation or cylinder isolation when a change of cylinders is required. Available in either brass or stainless steel construction, they are supplied entirely installed on a stainless steel panel providing for convenient, wall-mounted installation. The overall compact design allows for installation in areas where space is at a premium.

                                          Standard Features
                                          • Allows main gas supply to be turned off for service without disturbing gas flow to application.
                                          • High Purity Diffusion-Resistant Regulators minimize the diffusion of air into the system, maintaining the purity of the gas.
                                          • Diaphragm Seal Isolation Valves allow for complete isolation of the gas source when making a changeout.
                                          • Check Valves prevent backflow of gas from regulator and pigtail.

                                          Specifications
                                          Maximum Inlet Pressure:
                                            High Pressure Back-up: 3000 psig
                                             Low Pressure Primary Supply

                                          Flow Capacity:
                                            BRS-X-50: 30 slpm N2
                                            BRS-X-100: 60 slpm N2
                                            BRSH-X-100: 250 slpm N2

                                          Inlet Pressure Gauges (dual scale):
                                            High Pressure Back-up:
                                              0–4000 psig/ 0–275 bar
                                            Low Pressure Primary Supply

                                          Minimum Inlet Pressure: 50 psig

                                          Delivery Pressure Range

                                          Delivery Pressure Gauge

                                          Gauge Size: 2" Dial

                                          Flow Coefficient:
                                            Two-stage Back-up Regulator: Cv = 0.06
                                            Line Regulator:
                                              BRS: Cv = 0.15
                                              BRSH: Cv = 1.8

                                          Operating Temperature Range: -40°F to 140°F

                                          Inlet Connections:
                                            High Pressure Back-up:
                                              3 ft. Stn. Stl. Flex. Hose with
                                                  Inlet CGA connection as specified
                                            Low Pressure Primary Supply: 1/4" NPT female

                                          Outlet Connection:
                                              BRS: 1/4" NPT female
                                              BRSH: 3/4" NPT female

                                          Approximate Weight: 10 lbs


                                          Model BRS Installed as Back-up for Cryogenic Container

                                          Materials of Construction
                                          Regulator Bodies:
                                            Brass Systems: Brass Bar Stock
                                            Stainless Steel Systems: Type 316 SS Bar Stock
                                          Diaphragms: Type 316 Stainless Steel
                                          Gauges:
                                            Brass Systems: Brass
                                            Stainless Steel Systems: Type 316 SS
                                          Bonnets:
                                            Brass Systems: Brass
                                            Stainless Steel Systems: 300 Series SS
                                          Other Metal Parts Exposed to Gas:
                                            Brass Systems: Brass and Stainless Steel
                                             Stainless Steel Systems: Type 316 SS
                                          Seats and Seals: PTFE
                                          Check Valve Seats:
                                            L.P. Inlet: Viton®
                                            CGA Nipple: EPDM with Brass Systems, Viton®
                                              with Stainless Steel Systems
                                          Isolation and Vent Valves:
                                            Body:
                                              Brass Systems: Brass Bar Stock
                                              Stainless Steel Systems: Type 316 SS Bar Stock
                                          Diaphragms: Type 316 Stainless Steel
                                          Seats: PCTFE

                                          Optional Equipment
                                          Equipment Part No.
                                          Annunciators  
                                          Pressure Switches  
                                          Purge/Vent Valves (set of 2 installed prior to isolation valves)  
                                            Brass Systems SG6680
                                            Stainless Steel Systems SG6681
                                          Replacement pigtails, flexible 3' length, high pressure side
                                            Brass Systems SG6629-CGA
                                            Stainless Steel Systems SG6627-CGA
                                          Compression Fittings (male connectors)
                                            Brass Systems
                                               1/4" NPT male x 1/8" compression
                                          SG6703
                                              1/4" NPT male x 1/4" compression SG6704
                                            Stainless Steel Systems
                                              1/4" NPT male x 1/8" compression SG6713
                                              1/4" NPT male x 1/4" compression SG6714
                                          Note: Pigtails for the primary low pressure inlet connection are available. Contact your Advanced Representative for more information.

                                          Table I

                                          Part Number BRS Preset
                                          Back-up
                                          Pressure Setting
                                          (psig)
                                          Inlet – Low Pressure Primary
                                          Supply (right side)
                                            Delivery Pressure
                                          Maximum Gauge (dual scale)   Range Gauge (dual scale)
                                          (psig) (psig) (bar)   (psig) (psig) (bar)
                                          Brass Systems                
                                          BRS-B-50-(CGA) 50 180 0–200 0–14   4–45 0–100 0–7
                                          BRS-B-50D-(CGA) 50 380 0–400 0–28   4–45 0–100 0–7
                                          BRS-B-100-(CGA) 100 180 0–200 0–14   5–90 0–200 0–14
                                          BRS-B-100D-(CGA) 100 380 0–400 0–28   5–90 0–200 0–14
                                          BRSH-B-100-(CGA) 100 180 0–200 0–14   5–90 0–200 0–14
                                          BRSH-B-100D-(CGA) 100 380 0–400 0–28   5–90 0–200 0–14
                                          Stainless Steel Systems                
                                          BRS-S-50-(CGA) 50 180 0–200 0–14   4–45 0–100 0–7
                                          BRS-S-50D-(CGA) 50 380 0–400 0–28   4–45 0–100 0–7
                                          BRS-S-100-(CGA) 100 180 0–200 0–14   5–90 0–200 0–14
                                          BRS-S-100D-(CGA) 100 380 0–400 0–28   5–90 0–200 0–14
                                          BRSH-S-100-(CGA) 100 180 0–200 0–14   5–90 0–200 0–14
                                          BRSH-S-100D-(CGA) 100 380 0–400 0–28   5–90 0–200 0–14
                                           

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