G-650 Vacuum Joint Testing Gun

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

G-650 Vacuum Joint Testing Gun

 

  • Manufacturers or Retubing: Ideal for heat exchanger manufacturers or companies performing retubing operations.
  • Easy to detect leaks: 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.
  • Uses standard air supplies: Operates on standard plant air supplies from 40 to 125 psi (2.8-8.6 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, Seal and Washer Sets: This 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.
G-650 Vacuum Joint Testing Gun
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