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Manhole Vacuum Test Equipment


Efficient, accurate and cost-effective method of testing new, existing, and rehabilitated manholes

  • Vacuum test per ASTM C 1244*
  • Create a vacuum to identify infiltration and exfiltration and then monitoring a gauge for vacuum loss.
  • Less expensive and faster than water testing
  • Remote-inflation and monitoring system keeps users away from the danger zone.
  • For manholes as deep as 40' if desired.

*When utilizing ASTM C1244, a vacuum of 10 inches Hg is drawn on the manhole after all lift holes are plugged, and pipes entering the manhole are temporarily plugged and securely braced. The time is measured for the vacuum to drop to 9 inches Hg.  The manhole is accepted if the measured time meets or exceeds the values presented in Table 1 of ASTM C1244. If the manhole fails the initial test, it may be repaired by an approved method until a satisfactory test is obtained.
Note: The latest edition of ASTM C1244 shall be used for proper testing procedures and criteria.

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Bladder-Style Head Assemblies


  • Seals the inside diameter of the manhole at frame or cone
  • Supported by a durable aluminum brace
  • Hose (20 ft.) and gauge assembly included
  • Push-pin rod design for easy depth adjustment
Manhole Tester Bladder Style

Plate-Style Head Assemblies


  • Designed to seal manhole cone surface
  • Seals a wide range of manhole diameters
  • Hose (20 ft.) and gauge assembly included
  • Neoprene gasket for leak-free seal
Manhole Tester Plate Style

Bladder and Plate Style Vacuum Testers
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Vacuum Pumps


  • 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' manhole (18 CFM at 10" Hg)


Manhole Vacuum Pump

Venturi 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 (air compressor: minimum 85 CFM at 100 PSI)
  • Chicago/Crows Foot air compressor fitting and Cam and Groove Adapter F Style vacuum fitting


Manhole Venturi Vacuum Generator

Vacuum Pumps and Venturi Vacuum Generators
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