Because the small pumps use compressed air and constantly function at a lower pressure, pressure fluctuations are uncommon.
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Designed for use in high-flow applications that call for moderate vacuum levels, the low-pressure M Series of pneumatically driven pumps from PIAB (Rockland, MA) provide up to 27" Hg vacuum at an inlet pressure of 49 psi.
Because the small pumps use compressed air and constantly function at a lower pressure, pressure fluctuations are uncommon.