Air Regulators
Why Use A Compressed Air Regulator?
Executive Summary About Air Regulators By Bill Wade
An air regulators is a device that lowers the downstream air pressure. Downstream air is the air that’s moving from the regulator towards your application.
Compressed air will flow from the compressor reservoir into the air regulator (this supply is called upstream air) and through a system of an internal diaphragm and springs, the regulator will maintain a constant downstream air pressure level, despite changes in the upstream supply pressure from the tank.
Recognize that you can only use a compressed air regulator to increase the downstream air pressure up to the level of the upstream supply air pressure. An air regulator will not enable you to “dial up” the downstream air pressure higher than the upstream level.
You will want to set the downstream air pressure from your regulator at a pressure level that is below the lowest air pressure that will be incoming from your air compressor. When the cut out pressure is reached, the compressor stops compressing air. If you set the downstream air pressure at a pressure level BELOW the cut in pressure level of the air compressor, in theory, the air pressure to your application should never change. Check out details of this at ABOUT-air-compressors.
Help – I Can’t Get At My Air Regulator!
Executive Summary About Air Regulators By Bill Wade
With an air piloted regulator a small “pilot” air regulator is installed in an accessible location. A 50 PSI air pilot pressure may product a corresponding 50 PSI output on the main regulator. If a small air line is plumbed from a ‘T’ in the downstream line of the main regulator and run to a visible remote air pressure gauge located near the pilot regulator, by monitoring that remote gauge, the operator can adjust the pressure to the main regulator as needed to “dial in” the downstream pressure that is required for the application.
Some electric regulators may contain a simple electric motor that, when activated by an operator, will adjust the regulator to increase or decrease the downstream pressure. A 4 milliamp signal might correspond to 0 PSI downstream pressure and 20 milliamps might equal 100 PSI downstream pressure. As the application either demanded an increased or reduced pressure, a pressure sensing device at the application would read the pressure and provide the controller with the pressure information.
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