Anyone knowledgeable on air compressors?

[TomG]

Hi Ron,

The scroll concept is not new, it's been used in small refrigeration compressors for years. What is new is use of the concept in compressed air applications. I suspect that is due to improved manufacturing capabilities, required to make the larger scroll plates. The pros of a scroll compressor are; few moving parts, no valves or seals to wear and quiet operation. The cons are; limited capacity (volume) and as you mentioned, cost.

Tom