Quickly seal off and evacuate individual heat exchanger tubes to test the tube for leakage
G-650 Vacuum Joint Testing Gun quickly test expanded tube-to-tubesheet joints for leakage. Ideal for heat exchanger manufacturers or companies performing retubing operations. The G-650 Gun seals the tube ID and along the tubesheet face, then evacuates the tube end at the joint. A loss of vacuum indicates a leaky tube joint.
The G-650 Gun operates on standard plant air supplies from 40 to 125 psi (2.7-8.6 bar). A highly efficient venturi creates 21-24 in-Hg (707 to 808 mBar) vacuum on an inlet air supply of 100 psi (6.8Bar) and 10 SCFM. Interchangeable Manifolds, and Seal and Washer Sets allow the G-650 to test tube-to-tubesheet joints on 3/8" OD to 1-1/4" (9.53mm to 31.75mm) OD tubes sizes from 0.280" to 1.230" (7.11mm to 31.24mm) I.D. The larger G-650A Joint Testing Gun will accommodate 1-1/2" to as large as 2-1/2" tube sizes.
The G-650 Guns are not suitable for testing excessively belled / flared tube ends, or tubes with welded tube-to-tubesheet joints.
Specify the following information when ordering:
- Tube OD and wall thickness
- Number of tubes to be tested
- Tube pitch and spacing (if known)
- Length or depth of any channel head present
Features & Benefits