Ask a Question

Home > Pipeline Test Equipment > 938-7 Series Manhole Vacuum Testers & Accessories

Manhole Vacuum Test Equipment


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

  • Vacuum test per ASTM C 1244 for between10 inches Hg and 9 inches Hg (-5 psig to -4.5 psig) for 74 seconds
  • 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.

Manholes should be tested to 10" mercury vacuum

For other test equipment click here

For Pipeline Cleaning Balls click here

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

Click an Item Number below to order


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


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

Venturi Vacuum Generators
Click an Item Number below to order