Advanced Specialty Gas Equipment Back-up Systems BRS Series

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

Model BRS-S-50 The 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 Generator The 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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