G-Series test guns for testing tubes & tubesheet joints for 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.

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 gage 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.

G-250 Vacuum Tube Testing Guns are designed to quickly seal off and evacuate individual heat exchanger tubes to test the tube for leakage. Operation is easy. Connect standard plant air supply to the active vacuum gun and insert the conical seal into the end of the tube to be tested. Insert the passive plugging tool into the opposite end of the tube. Depress the air control valve, air flows through the vacuum generator and evacuates the tube. Release the air control valve and any loss of vacuum indicated on the vacuum gauge identifies a leaking tube. An optional digital vacuum gauge increases the operators ability to detect even the smallest pinhole leaks.

The G-250 Set is supplied with two sizes of interchangeable conical neoprene Seal and Washer Sets nd a compact toolbox. The Seals and Washer Sets allow the G-250 to be utilized to test heat exchanger tubes ranging from 0.28" to 1.45" (7.1mm to 36.8mm) ID. The G-250 Gun are machined form high strength aluminum alloy reducing the fatigue associated with heavier testing equipment. Each G-250 Set weighs less than 2.5 lbs (1.1kg).

Specify the following information 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.

Requirements:

Plant air supply between 40 and 125 psi (2.7 to 8.6Bar)
Air supply flow rate greater than 5 SCFM (2.36lps)

G-450 Tube Tester is designed to allow testing of straight tube heat exchangers when access is restricted to one end of the tube. Ideal for testing tubes in floating head HX applications with the tube bundles in place. Saves time expense of open both ends of the bundle, or pulling, handling and replacing the tube bundles. The G-450 Tube Tester will pneumatically test individual heat exchanger tubes for pinhole leaks. Either the entire tube bundle or an isolated number of tubes in the bundle can be tested. The G-450 utilizes standard plant air supplies from 40 to 125 psi (2.7-8.6 Bar). Interchangeable Support Rod & Tube Assemblies, and Seal and Washer Sets allow the G-450 to test tube sizes from 0.500" to 1.230" (12.70mm to 31.24mm) I.D.

Specify the following information 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 present, or
Distance from open tubesheet face to any obstruction along the bundle axis that would block unrestricted access to the tube end.

The G-450 Tube Tester is straight forward. Install the correctly sized seals and washers on the Support Rod & Tube Assembly. Insert the Support Rod & Tube Assembly into the tube to be tested (some assembly may be required). Attached the G-450 Gun to the Support Rod quick coupling. Press the air control valve button, air expands the seals on Support Rod and pressurizes the tube. When the air pressure within the tube stabilizes, release the air control valve. Any reduction of pressure indicated on the large pressure gauge will reveal even the smallest tube leak. Ask about the optional digital pressure gage.

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" (9.52mm 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

For a complete catalog, video or additional technical information please contact us by phone, fax or E-mail.