Compact® Rings

The Compact® rings are designed to be lightweight and low profile while still providing excellent results. This makes them the default solution for most applications.

These rings were re-engineered, reducing weight by 35%, axial width by 30%, and radial height clearance to under 38mm. For sizes greater than 24-inch diameter, two smaller rings can be joined.

This is an Inspection System designed to tackle a wide range of inspection challenges including:

  • Bare / Painted Pipes
  • Buried Pipes
  • Sleeved or Unsleeved Road Crossing Pipes

Lightweight Materials
Smart Sensors
Ring Joining
Low Profile
Advanced Materials
Easy-Fit Modules
Pneumatic Loading
Spring-Lock Latch
Ergonomic Design

2-row transducer modules with 30 mm spacing for medium frequency Inspection.


2-row transducer modules with 42 mm spacing for low frequency inspection.


3-row transducer modules with 42 mm & 21 mm spacing for inspection across an ultra-wide band frequency range without having to swap modules.


Number of Channels
Nominal Pipe Size (NPS)
5” to 40” (DN 150 to 1000)
Operating Temperature
-40°C to 150°C (-40°F to 302°F)
Radial Clearance
38 mm (1.5”)
Transduction System Compatibility
Wavemaker® G4 & G4mini