By . Air Compressor. At Thursday, August 09th 2018, 18:17:16 PM.
For the people who want a more powerful model, there is Westward 4B220 portable air compressor. This machine uses a powerful Briggs engine. Its powered by a powerful 5.5 HP motor. The machine uses a 2 cylinder pump made of cast iron. It has a horizontally placed tank which has a rated capacity of 20 gallons. It uses a four cycle aluminum block engine. The machine has 21 oz engine oil capacity and 12 oz of compressor pump oil. The machine uses a time tested reliable type H tank which makes it one of the longest performing and most reliable machines that you can buy.
All reciprocating air compressors throw out some oil with the air they compress. When the tank reaches its designed pressure limit, a switch will interrupt electrical power to the motor. Simultaneously, a certain amount of oily air will be released into the shop environment. You may see oil collecting on the wall behind the compressor and on the pump and compressor as well over time. This is not cause for alarm but periodic cleaning may be needed.
Now, most of these you do not have to know anything about, but if you are a layman, you can clearly see that there is a lot more to compressors than first meets the eye. For general use with tools, an air compressor is most likely to be a reciprocating piston, a rotary vane or rotary screw compressor.