G150 Tube Testing Guns

Pneumatically test individual tubes in a heat exchanger for pinhole leaks

  • Provides a Fast and Effective Method for Pneumatically Testing Heat Exchanger Tubes and Tube-to-Tubesheet Joints for Leaks

G-150 Tube Testing Guns are designed to pneumatically test individual tubes in a heat exchanger for pinhole leaks. Either the entire tube bundle or an isolated number of tubes in the bundle can be tested using standard plant air supplies from 40 to 125 psi (2.7-8.6 bar).

Interchangeable Seal and Washer Sets allow the G-150’s to test tube sizes from 0.280″ to 1.230″ (7.11mm to 31.24mm) I.D. The larger G-150A Testing Guns will operate in tube sizes to 2.500″ (63.5mm) I.D. G-150 Tube Testing Gun Set includes one G-150 Air Injection Gun and one G-150 Tube Plugging Gun. The G-150 Air Injection Gun and G-150 Plugging Guns weigh less than 2.1 lbs. (1 kg) apiece. The G-150A’s weigh less than 2.4 lbs. each.



Easy to Operate:
The G-150 Tube Testing Guns are easy to operate. Simply insert both the Air Injection Gun and Plugging Gun into the tube end, press an air control valve button, air expands the seals on both guns and pressurizes the tube. When the pressure in the tubes stabilizes release the air control valve. Any reduction of pressure indicated on the large pressure gauge will reveal even the smallest tube leak. An optional digital gauge increases the guns ability to detect even the smallest pinhole leaks.

Specify the following when ordering:

  • Tube OD and wall thickness
  • Tube length, tubesheet face-to-face dimension
  • Number of tubes to be tested
  • Length or depth of any channel head or header box present, if any.


G Series Seal Sizing Chart