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OG-175 O2 Generator

OG-175 O2 Generator
Call for price

OG-175 Oxygen Generator will produce 175 SCFH oxygen at 93% purity from 32 CFM compressed air at 45 PSI of pressure.



OG-175 Oxygen Generator is an industrial oxygen concentrator great for continuous oxygen production.  Compressed air must be supplied to the OG-175.  This compressed air is separated via Pressure Swing Absorption (PSA) technology.  Oxygen is captured in a storage tank and can be supplied to the point of use at any flow rate required up to 175 SCFH at pressures of 45 - 60 PSI.




OG-175 Oxygen Concentrator is built to provide thousands of hours of continuous, reliable service. The Zeolite sieve is factory sealed in solid steel tanks and rarely needs replacement. With very few moving parts, our generators are built to provide thousands of hours of continuous, reliable service Routine maintenance is as simple as changing an air filter.


OG-175 is built with precision-welded tank assemblies (ASME coded) and oxygen-clean brass tubing and valves which allow them to operate in extreme conditions.

 Made in the USA

Every PLC-controlled generator is assembled and tested in our North Tonawanda, NY production facility.


What is Pressure Swing Adsorption (PSA)

Clean, dry compressed air is fed into the first molecular sieve bed.  Nitrogen is adsorbed, while oxygen is allowed to flow through.  When the sieve in the first bed becomes full of nitrogen, the airflow is then directed into the second bed.  As the second bed separates the oxygen from the nitrogen, the first bed vents its nitrogen into the atmosphere.  Compressed air is once again fed into the first bed, and the process is repeated continuously.  A constant flow of oxygen is reliably produced.

Oxygen generator PSA


The OG-175 Oxygen Concentrator requires compressed air for operation.  Typical installation of entire system is outlined below. 

  • Air compressor will provide at least 32 CFM compressed air at 90PSI or greater

  • Particulate filter will remove most dust, and oil from air stream

  • Refrigerant air dryer is used to remote moisture from air and provide 40-deg F dew point

  • Coalescing filter will remove any final oil mist and moisture from air flow

  • Air storage tank is necessary to provide sufficient air storage for oxygen generator purging

  • Oxygen Generator will purge nitrogen from air and capture oxygen

  • Oxygen storage tank will store oxygen and provide consistent oxygen flow and pressure to point of use

  • We also suggest installing an oxygen filter downstream of the oxygen storage tank to filter any zeolite dust from the oxygen concentrator

Oxygen generator layout


External components of the OG-175 shown below.  OG-175 is a simple system to install and operate.Oxygen generator components

 OG-100 oxygen generator components


Control cabinet of the OG-175 houses the PLC controller and all components.  All components are simple and reliable.  Every part on this oxygen concentrator is rebuildable or repairable.  This is a machine that will serve your operation for as long as you wish.

OG-175 components inside enclosure

OG-25 Oxygen generator storage tank

Oxygen Purity Switch:

Oxygen purity switch

Optional oxygen purity switch can be added to the oxygen concentrator as an alarm.  Simple oxygen purity monitoring.  Provides relay contacts to alert of potential problems in your oxygen generation system


  • Powered and wired into oxygen generator
  • Can be mounted to the front panel of the Oxygen Generator, or remote mounted to customers preferred location
  • Oxygen plumbed through unit, no oxygen losses
  • Reliable ultrasonic sensor technology
  •  Dual DPDT relay outputs, alarms triggered at > 85% O2 and > 75% O2 respectively.
  • 1/4″ FPT gas connections. (custom gas connections available on request)
  • 100 psi maximum operating pressure.




OG-100/175/250 User Manual

OG-175 Specifications

Additional Information

Additional Information

Manufacturer OGSI
Call For Price Yes
Listing Description 175 SCFH O2 @ 45-65 PSI
Nominal Gas Flow Rate 175 SCFH
Operating Pressure 45-60 PSI
Max Pressure 65 PSI
Gas Connections 1/4" Female NPT
Dimensions 26" wide x 25" deep x 72" tall
Operational RH Range 0-85% humidity
Operational Temperature Range 35 - 95-deg F
Power Requirements 120 VAC, 60 Hz, 1-phase, 6amp (220 VAC optional)
Lead Time 2-weeks
Warranty 1 Year
Country of Origin USA

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