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
Cherne Air-Loc Plate Style Manhole Vacuum Testers
Designed to seal manhole cone surface
Seals a wide range of manhole diameters
Neoprene gasket for leak-free seal
Cherne Air Loc Vacuum Pump
Choose a Honda or Briggs & Stratton engine–each with low-oil shut-off to prevent engine failure
Heavy-duty frame with optional wheel kit
Unbreakable aluminum filter jars
Oil-free graphite vane pump for no-fuss lubrication
Draws 10″ Hg vacuum in about two minutes for a 15′ deep manhole (18 CFM at 10″ Hg)
Cherne Air Loc Vacuum Generators
Converts standard air compressor into a vacuum source for testing manholes–draws a vacuum in minutes
Vacuum Generator 460 delivers 14 CFM at 10″ Hg
Air compressor: minimum 7 CFM at 100 PSI
Vacuum Generator 600 delivers 42 CFM at 10″ Hg, meeting or exceeding the competition
