Bladder Style Manhole Vacuum Testers,Manhole Vacuum Testing 

Cherne Air-Loc Bladder Style Manhole Vacuum Testers   

Air-Loc® Manhole Vacuum 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.”

Bladder-Style Air-Loc® Head Assembly Features

  • Seals the inside diameter of the manhole at frame or cone
  • Supported by a durable aluminum brace
  • Push-pin rod design for easy depth adjustment
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