Out of different pressure gauges which one can be used on my air compressor? The typical smaller air compressor will have two gauges, as discussed on this page on this site: https://understanding-air-compressors.com/why-are-there-two-air-gauges/
A visit to the big box store or hardware store may reveal a host of pressure gauges, or not, depending on the store. Which one(s) then are the right air gauges for the typical do it yourself home or small workshop air compressor?
It is necessary to actually look at the face of the gauge you are considering buying, looking at whether the threaded part comes out the bottom or the back, and the size of the male thread fitting on the gauge.
It doesn’t typically matter if the gauge is a 1 1/2″ diameter face, a 2″ face diameter or a different size gauge face entirely, yet buying the replacement gauge that is the same size as the one that you are replacing on your air compressor helps ensure that it will fit in the same space on that compressor.
Some gauges are used to display vacuum. Some are built to display extremely low pressure, or a limited pressure range. Some are liquid filled. Some are made with stainless steel parts which has an impact on cost.
It is important to consider your compressor air gauge specifics when heading for the shop to buy a replacement air gauge. One day you may have to for if you have your air compressor long enough, yes, the air gauges do wear / rust out.
Here are the things you want to look for when selecting a replacement air pressure, or air regulator pressure gauge for your air compressor.
- same size gauge face ( if possible, not critical if a larger / smaller air gauge face will fit the space on your compressor)
- same (or close) pressure range displayed on the gauge face (close means within 10 PSI of the range of the existing gauge)
- same size mounting thread or style (as in a male as opposed to a female thread, and the same NPT or Metric thread size)
- same mounting position of the threaded fitting (whether the threaded part comes out the back or the bottom of the air gauge)
For a DIY type home air compressor, another indication that you have selected the right gauge will be the price. Expect to pay under $15 for a typical air pressure gauge for use in a general purpose, low cost air compressor. You can spend more if you wish. For example, buy a stainless steel gauge versus a cheaper “just metal” one. It will still work just fine all of the other issues noted above are the same, you’ll just spend a whole lot more for a stainless steel versus a basic gauge.
The same for buying a liquid filled gauge versus a basic gauge. The liquid filled gauge will work just fine, but cost a gazillion dollars more (comparatively speaking) than the basic gauge… and both will work.
Replacement compressor air gauges are available at most decent hardware stores, bit box stores, on line, and certainly should be available in the air parts section of the store from which you purchased your air compressor originally.
Have a question about a replacement air gauge. Help yourself to the comment box below.