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Low Pressure Products

Critical Rental Solutions provides low pressure rental solutions with our skid-mounted or containerized units ranging from vacuum to 23 psig and up to 20,000 cfm. Our modular fleet allows us to customize exactly what you need for your emergency, planned outage, right sizing, supplemental or temporary need.
What is the Low Pressure Space?

What is a “Fan”/ “Blower”/ “Compressor” ….it depends on whom you ask.

According to ASME – American Society of Mechanical Engineers defines by Pressure Ratio

Fan: Pressure ratio up to 1.11
Blower: Pressure ratio from 1.11 to 1.2
Compressor: Pressure ratio exceeds 1.2

API – American Petroleum Institute defines by Pressure

Fan: < 3 psig
Blower: 3 – 5 psig
Compressor: > 5 psig

On Wikipedia it is said that…
Fans produce air flows with high volume and low pressure…
….Compressors produce high pressures at a comparatively low volume.

How PD Blower Technology works

A pair of rotors turn in opposite directions, meshing together like 2 gears. There is no contact within machine, just very small clearances (1,000ths of inches) Pockets of air are trapped between the rotor-lobes and the housing – these pockets of air are transported around the housing to the discharge side of the machine. Check out our PD Blower options, Click here to learn more

Multi-Stage Technology Usage

Multiple centrifugal impellers mounted on a single shaft that is, typically, driven directly by a 2-pole motor. Multiple impeller combinations can be used to achieve the desired performance properties. Throttled using standard butterfly valve. Check out our Multi-Stage options, Click here to learn more