Reciprocating Compressors


Marshall Brewson offer a complete range of reciprocating type compressors from small automotive workshop compressors up to industrial booster units. With many specialised application options. The following options are some of the application we can provide:

  • Dental air
  • Low noise units
  • Portable (Electrical/Petrol/Diesel)
  • High pressure units
  • Breathing air
  • Oil free
  • High pressure booster units
  • Diaphragm
  • Medical air
  • Workshop automotive

For more information please contact us to discuss your requirements


What is the difference between FAD and Displacement?

To the uninitiated or first-time buyer of an air compressor, getting an understanding of the specification of each model can be tricky. For one thing, there are so many different terms and abbreviations involved.

Two terms that you’ll often see applied to a reciprocating air compressor are within the volume flow – Displacement & Free air Delivery (FAD). So, the inevitable questions are: what do these terms mean and what is the difference?

Displacement (Theoretical) measurements refer solely to the nominal capability of an air compressor’s pump – in other words, the actual volume of air the pump can displace (draw into the compressor) per minute. This figure is based upon the size of the pump’s cylinders and the speed at which the pump operates. Displacement should not be used as an indicator of an air compressors’ ability to run a particular air tool or its suitability to perform a certain task.

Free Air Delivery FAD (Actually Delivered) is a far more useful measurement when determining the ‘power’ of an air compressor i.e. it’s suitability for use with air tools etc. FAD stands for Free Air Delivery, and this is the volume of compressed air that an air compressor will actually discharge as a result of the compression process.

FAD is typically a third less than Displacement (but it can be more). In other words, the volume of compressed air actually delivered is approximately a third lower than the volume of atmospheric air that an air compressor is capable of displacing. For example if your compressor is 10 CFM (Displacement) then the CFM (FAD) in reality will be about 6.5 CFM

  • Oil Free Compressed Air
  • Variable Speed Drive Motor
  • Easy to Operate
  • Auto Condensate discharge
  • Virtually maintenance free

The i.Comp 3 is a unique concept in the reciprocating compressor market with its new drive concept the i.Comp3 provides you with a versatile and dependable supply of oil-free compressed air at all times.

This flexible all-rounder can be taken anywhere thanks to its low weight and space-saving, compact design. The i.Comp3 design eliminates the need for an air receiver. The i.Comp 3 can give a constant pressure up to 11 bar, with a flow rate up to 160 l/min

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  • Oil free compressor
  • Integrated fine filter
  • Optional sound enclosure
  • Up to 18.5 cfm delivery
  • Built in desiccant dryer

Compressed air systems for dental practices, clinics and laboratories have to meet the strictest requirements: In addition to providing the very best in efficiency, reliability and compressed air quality. These proven dental compressors combine exceptional performance with compact design. Highly durable and reliable, each unit is virtually maintenance-free and provides oil-free air with minimal power consumption. They are the perfect choice for dental practices with up to 12 treatment units and for medical and dental laboratory uses.

  • Initial incoming pressures up to 13 bar
  • Output pressures up to 45 bar
  • Optional Nitrogen use
  • Energy saving IE3 motors fitted
  • Acoustic hood option available

The ability to offer compressed air at various pressures makes it one of the most versatile energy sources available. Special applications require specifically tailored solutions in order to achieve optimum efficiency.
Boosters are ideal for applications where compressed air is required at a higher pressure than the standard works or control air at particular points in the manufacturing process. In these cases, it is more economical to use the existing works air and boost it to the higher pressure with a small local compressor, rather than to operate the whole compressed air system at the higher pressure.

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  • Cast iron cylinder
  • Slow Running
  • Built & tested in U.K.
  • 1 & 3 phase options
  • 2 year warranty

The Marshall Brewson workshop range of compressors complement the HPC industrial range by offering the light industrial, small automotive or d.i.y. user a range of compressors available in petrol engine, 230, & 400 volts with a capacity of 4 – 29 cfm.

This range of compressors comes complete with automatic stop/start controls and a 24 month conditional warranty within a budget price.

  • 1.5-2.2kW single & three phase
  • 10-90 Air receiver options
  • 10 bar working pressure
  • Maintenance free 1:1 drive
  • Stainless steel valve plates

The CLASSIC series compressors have been designed especially for small trade businesses. The product range focuses on common sizes allowing us to deliver exceptional value for money with impressive compressed air performance. The CLASSIC compressors are portable direct drive reciprocating air compressors, the pump units are manufactured with high quality components comprising of stainless steel valve plates, cast iron cylinder barrels to give optimal performance. The pump units are mounted onto horizontal air receivers with standard working pressures of, the compressors come complete with starters and pressure switch controls.

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