Patent ID: 8608460

Claim:
A pump configured to optimize an amount of supply compressed air utilized during operation, comprising: a first diaphragm assembly disposed in a first diaphragm chamber, said first diaphragm assembly comprising a first end-of-stroke position (EOS 1 ) and a first turndown position (X SL ), wherein the first turndown position (X SL ) comprises a different position in the first diaphragm assembly than the first end-of-stroke position (EOS 1 ); a second diaphragm assembly disposed in a second diaphragm chamber, said second diaphragm assembly comprising a second end-of-stroke position (EOS 2 ) and a second turndown position (X SR ), wherein the second turndown position (X SR ) comprises a different position in the second diaphragm assembly than the second end-of-stroke position (EOS 2 ); a valve configured to adjust a flow of supply compressed air to said first diaphragm chamber and to said second diaphragm chamber; a first sensor configured to detect said first diaphragm assembly at said first turndown position (X SL ), wherein said detection of said first diaphragm assembly at said first turndown position (X SL ) results in said valve decreasing said supply compressed air to said first diaphragm chamber; and a second sensor configured to detect said first diaphragm assembly at said first end-of-stroke position (EOS 1 ), wherein said detection of said first diaphragm assembly at said first end-of-stroke position (EOS 1 ) results in said valve increasing said supply compressed air to said second diaphragm chamber.