Vacuum Manhole Testing

Cherne® Air-Loc® Manhole Testers provide the most efficient, accurate and cost-effective method of testing new, existing, and rehabilitated manholes.  Vacuum testing identifies infiltration and exfiltration problems by creating a vacuum in a manhole then monitoring a gauge for vacuum loss. 

Frequently Asked Questions

How much vacuum (inches of mercury) do manholes need to be tested to?

10 inches