Does air compressor system for air instrument need spillback line?

by kholish
(indonesia)

when the pressure of the air instrument system is achieved the setting target (i.e 7 bar), unloader valve will work. the result is dischard flow is much lower than minimum flow design. Plese tell me, do we need spillback line to prevent compressor surging ?

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Bill says...

I am not familiar with what you mean by a spillback line.

In order to reduce pressure surge in the air line to any application, the regulated pressure should be set below the cut in pressure level of the air compressor. This takes the pressure surge out of the line to the application.

Read the page on Regulators for more info.

Cheers,

Bill