Inspecting Smaller Pipes the Efficient Way


Our Teletest ‘LATCH and FIRE’ Mini-Tools inspect small pipelines ranging from 38.1 to 127 millimeters (1.5 to 6 inches), superseding heavy fixed tools. This represents a step change in efficiency when compared with cumbersome “solid transducer ring” tools. The radical design combines the latest lightweight engineering materials and latch design to provide a tool that is light, easy to use, and only requires 42-millimeter (1.7-inch) clearance between pipes.

The use of the latest CAD design software allows improved coupling between the transducers and the pipe, maximizing the amplitude of the signal. In addition, the transducers are now retractable, thereby extending their lifetime.

Benefits of ‘LATCH and FIRE’ Mini-Tools over conventional fixed tool designs include:

  • Lightweight design (75% weight reduction)
  • Only 42mm (1.7in) clearance required between pipes
  • 90% reduction in tool setup time

Adapter kits are available for all intermediate sizes between 38 to 152 millimeters (1.5 to 6 inches).

75mm/3in Mini-Tool Assembly on Pipe Request more information



Tool Description

A lightweight, easy to use guided wave tool for use on small diameter piping in difficult to access areas

Minimum Access Requirements

42mm (1.7in) clearance between pipes, 230mm (9in) exposed length of pipe

50mm/2in Tool Size
  • Number of Modules: 8
  • Weight: 1.73kg/3.8lb
75mm/3in Tool Size
  • Number of Modules: 12
  • Weight: 2.53kg/5.6lb
100mm/4in Tool Size
  • Number of Modules: 16
  • Weight: 3.1kg/6.8lb


Wave Mode

Single mode - torsional (recommended for small diameters) or longitudinal


3 x Teletest standard transducer in recessed mounting

Ring Quantity and Spacing

3 rings spaced 30mm (1.2in)

Operating Temperature

Pipe Temperature: -30° to 90°C (-22° to 194° F)


  • Available in sizes for 38, 50, 75, 100, 125 and 150 millimeter (1.5, 2, 3, 4, 5 and 6 inch) diameter pipes
  • Conforms to ASME/ANSI B3610
  • Tools are versatile and can inspect non-standard pipe sizes too

Carbon-Kevlar composite with integral Polyurethane bladder

Operating Temperature

Ambient Air Temperature: -30° to 50° C (-22° to 122° F)

Operating Pressure

40 PSi