14.7 psia, 68 degrees Fahrenheit, and 36 percent humidity.Since things like atmospheric pressure, humidity, and ambient temperature can all affect a compressor’s flow, SCFM is measured using standard or ideal conditions, which are: What is the Difference Between CFM and SCFM? SCFM is Standard Cubic Feet per Minute, and is a way of determining a more exact measurement of flow that a compressor is capable of.
A compressor that’s rated for 3.0 CFM 90 PSI provides 3 cubic feet per minute at 90 pounds per square inch. How many cubic feet per minute can the compressor provide, and at what pressure (PSI). Another way to think of this is in terms of the compressor’s output ability. While PSI is a measure of pressure, CFM is a measure of flow. CFM & SCFMĬFM stands for cubic feet per minute. You also need to know about CFM, because both CFM and PSI are important in determining what compressor is right for you. The thing to keep in mind about PSI is you want to make sure your compressor is rated for a higher PSI than you need.īut PSI isn’t the only consideration.
Most compressors for home-use or non-industrial applications provide a max rating of 150 to 175 PSI, and can easily handle air tools with a required minimum pressure of 90 to 100 PSI.Īir tools state clearly the minimum PSI, so it’s not hard to figure this out. How Much PSI Do You Need?ĭetermining the PSI rating you need depends on what kind of air tools you’ll be using. A PSI too high for the tool could damage it. A compressor operating at 90 PSI is able to deliver 90 pounds of pressure per square inch, which is important for operating air tools.Ī PSI too low for a given air tool and the tool won’t operate properly. This is a measure of how much force a compressor is able to generate per square inch of space.
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By the end of the article, you’ll have a full understanding of why all these air compressor factors are important.
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