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Foam Generator Model 1-965-42

Foam Generator Model 1-965-42

The Foam Generator Model 1-965-42 is the answer to high volume, low cost, portable leak detection. This method is ideal for finding leaky tubes quickly when posed with large time sensitive jobs. For example, both halves of a 200 MW condenser can be effectively tested on-line or off-line in less than 3 hours.

How it works:

When testing a condenser for leaks, both tube sheets are sealed with foam. When the steam side of the tube is exposed to a vacuum, it will create a vacuum inside the leaking tube and the foam plugs will recede into the leaky tube. When the steam side is exposed to pressure, the inside of the tube becomes pressurized and foam plugs will be forced out of the leaking tubes.


Shown below are some “on site” photos of the method at a large Eastern Utility.

Tube Sheets are sudsed in
a few minutes. Suds are fed continuously from 1-1/2"
delivery hose
Suds are smoothed out by operator and the entire tube end is plugged as illustrated
 Two tubes show up as leakers as the vacuum on the steam side causes the suds to recede into the leaking tube


Each generator comes complete with one 25’ foam hose, one 25’ air hose and one air gun.

*We recommend using two foam generators, one on each end of the condenser. This will reduce the chance of missing leaks as well as mismatching plugs. *


Formula #65 Foaming Agent  (used with Foam Generator Model 1-965-42)

Formula #65 Foaming Agent is specially formulated to produce long lasting stable Foam with excellent adhesive and cohesive properties. The foaming agent is easy to dilute for various consistencies preferred by the operator.

Formula #65 Foaming Agent is absolutely safe to use; harmless to humans, animal life, marine life, fabrics, metals, and metal alloys. The foaming agent is nonhazardous, biodegradable, and stable in the presence of water.


Formula #65 Foaming Agent packed 4 gallons per case

Minimum order of 12 gallons (3 cases)