Tank Pump Air

By · Wednesday, April 1st, 2009

Tank Pump Air

There is much confusion out there about selecting the right size air compressor to your air tools. Basically, there are several factors to look at the choosing the right air compressor for your shop or garage.

The first criterion is the horsepower rating. Most people assume that the greater the power rating on the box, the better the air compressor. However, all horsepower ratings are not equal and can be easily misinterpreted. What I mean is, go to your local giant hardware to choose a new air compressor to run your impact wrench. They have a 5 HP unit has a really cheap price. Why is that costs 5 hp industrial unit so much more? 5 hp is 5 hp, right? Not necessarily. Let explain. Look at the energy of the hardware unit draws. Probably needs about 15 amps from a normal 110 volt circuit. In this classification, are really getting only 2 hp. The 5hp rating on the box is inflated. To really get a true 5 hp you need at least 24 amps at 220 volts circuit to get it. If you are looking for 5 hp electric compressor, buy the industrial unit and stay away from the cheaper unit at your local hardware store. I'm not saying that all air compressors at the local hardware is junk. Many times one of these units is all you need. Just be aware of the real power rating.

The next review, when purchasing a new air compressor, "How much PSI will I need?" For starters, the ISP is short for "pounds per square inch "and so are rated as most compressors in the U.S.. In Europe, as seen in bars. PSI is all you have to worry on this side of the Atlantic. Most air tools in common use require about 90 PSI to work properly. However, you still need a compressor with a higher closing pressure. Most air compressors found in local hardware giant are "single-stage and off at 125 to 135 PSI. Do not be fooled. You might think all you need is 90 psi, so it should work fine. In general, these light duty compressors shut down at 100 psi and not forget the loss of line pressure. The little light just compressor stations will run an impact wrench. It might be fine for light duty use of garage but if you really intend use your air tool, more is definitely better. Many industrial compressors "two stage", which means that accumulate to closing pressure in two stages. The first stage is based on about 90 PSI and the second step builds to 175 PSI.

The next issue of criteria for compressors CFM of air is. CFM stands for "cubic feet per minute." It is a measure of volume. Basically this is how much air is moving. The air tools require a certain amount of air volume to run. PSI is only part of the equation. Do not be confused by different CFM ratings at different pressures. Each manufacturer is trying to make their product look better, giving a higher rating in CFM different pressures. The only real concern is how much CFM will reach 90 PSI. Remember 90 PSI is what most air tools require to operate. To find out what your air tool needs to function, just look at the table manufacturer's specifications. In general, air tools require 4 to 6 CFM. A good rule of thumb in the air compressors should get 3 -4 CFM per HP Real at 90 PSI.

The final factor to consider is the size of the tank. Tank sizes are usually stated in U.S. gallons. For example, 30 liters is a common tank size. So the question remains how big the tank need? First, do not confuse a large tank with longer duration of their air tools. If you used intermittently its impact, a large tank is fine. However, if you have need for continued use, you need a small tank with pump enough large and the engine. If the pump and motor are powerful enough, you should not run out of air. You can save a few dollars by purchasing an air compressor with a big tank and more small motor for intermittent use. If you need to run a "1" impact wrench (about 20 CFM) intermittently, and a small compressor with a large tank, could have enough air stored in the tank to do the job. However, if you are constantly running your air tool, you will to invest in a more powerful air compressor to do the job.

You should be able to select the air compressor Armed with this information. Basically, will have to decide ultimately what you going to use the unit and to choose the right model.

Jason is the webmaster for Red Hill Supply – Portable Air Compressor

Single user pump air tank (idea/concept)

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