Hfs r vacuum pump double stage 12cfm. After 15 seconds replace 1 4 cap back on inlet port. Item 1 hfs r 12 cfm vacuum pump dual stage 110v inlet 1 4 and 3 8 sae 1 hp 1 hfs r 12 cfm vacuum pump dual stage 110v inlet 1 4 and 3 8 sae 1 hp.
