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