BAUER GRU® MB5
The BAUER GRU® MB5 Gas Booster utilizes rotary screw compressor technology and has been specifically designed for biomethane injection into the pipeline grid for applications where higher pressures (up to 1100 PSIG) are required. The BAUER GRU® MB5 rotary screw booster is also suitable for large gas turbine power generators that require higher gas inlet injection pressures.
All BAUER GRU® Booster units are equipped with variable frequency speed control which allows the compressor to adjust to the incoming flow of gas. Utilizing a rotary screw booster compressor is advantageous over reciprocating piston compressors due to the higher reliability and lower cost of ownership of rotary screw compressors, especially in continuous duty applications.

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SYSTEM FOOTPRINT
- 96” W X 240” L X 96” H (2438 mm X 6096 mm X 2438 mm)
AVAILABLE OPTIONS
- Gas inlet particulate filter
- Gas after-cooler (air-cooled)
- Shell and tube heat exchanger for heat regeneration
- Heavy-duty weatherproof enclosure
- Sound attenuation
CODES AND STANDARDS
- Hazardous area classification: NFPA 52/70, Class 1, Division 2
- Pressure vessel code compliance: ASME
- Electrical code compliance: NEC, UL/control panels and assemblies
- Certified manufacturing organization: ISO 9001-2015
The BAUER GRU® MB5 is the perfect match-up to the GRU biogas recovery compressor system since the GRU MB5 utilizes the outlet pressure generated by GRU Biogas Recovery Compressor to boost the pressure of the biogas up to pipeline pressure or pressure required by the gas turbine generator system.
- Inlet pressure range: 73 - 363 psig ( 5 - 25 bar)
- Horsepower range: 50-350 HP (37-260 kw)
- Biogas Flow Rate: 321 - 2300 scfm (545.4 - 3907.6 nm3/hr)
- Final pressure: 300-1100 PSIG (21 - 76 BAR)
STANDARD SCOPE OF SUPPLY
- Heavy-duty rotary screw booster compressor at the heart of the system
- Variable speed control of compressor to modulate the flow of biogas based on the incoming supply of gas (VF drive located remote from skid as defined by Class 1, Div 2 code requirements per NEC NFPA70)
- Heavy-duty TEFC electric motor
- Stainless steel construction of piping and major P&ID components
- PLC control of all major system components
- BAUER CONNECT® remote telemetry IoT with Modbus TCP/IP or Profinet connection capability
- Fully integrated system built on a heavy-duty steel skid designed for plug and play installation
FOR GAS BOOSTING APPLICATIONS AT ELEVATED SUCTION PRESSURE AND FINAL PRESSURES UP TO 600 PSIG ( ROTARY SCREW COMPRESSOR BOOSTER) | |||||||||
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At Stated Max RPM | |||||||||
Model | Motor | Compressor Model | Suction Pressure | Max Final Pressure | SCFM | M3/H | |||
HP | kW | PSIG | BAR | PSIG | BAR | KG/MIN | M3/H | ||
GRUMB5-50 | 50 | 37 | MB5 | 73 | 5 | 300 | 20 | 321 | 545 |
GRUMB5-200 | 200 | 150 | MB5 | 174 | 12 | 435 | 300 | 2052 | 3486 |
GRUMB5-300 | 300 | 220 | MB5 | 247 | 17 | 870 | 60 | 2117 | 3597 |
GRUMB5-350 | 350 | 260 | MB5 | 363 | 25 | 1088 | 75 | 2322 | 3944 |
Note: 1) All performance data for compressed gas inlet (suction conditions) is stated at Standard Conditions: Suction Pressure as Indicated, Gas Temperature of 68⁰ F (20⁰C) and RH of 0% 2) All performance data for compressed gas outlet is stated at ISO 1217 Reference Conditions: Absolute Pressure at 364 ft (111m) elevation = 14.5 PSIG ( 1 Bar), Gas Temperature of 68⁰ F (20⁰C) and RH of 0% 3) All performance data are based on a typical well gas composition based on the following Mol percentages: Methane 97%, Nitrogen 1.0%, Carbon Dioxide 2%
All BAUER GRU® systems are built to Class1, Div2 NFPA standard