Cherne Industries

- Blader Style Manhole Testers



Air-Loc Manhole Testers provide the most efficient, accurate and cost-effective method of testing new, existing and rehabilitated manholes, per ASTM C 1244. Vacuum testing identifies infiltration and exfiltration problems by creating a vacuum in a manhole and then monitoring a gauge for vacuum loss. Less expensive and faster than water testing, the Air-Loc manhole tester's remote-inflation and monitoring system keeps users away from the “danger zone.'

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