Cherne's Air-Loc® Joint Tester is designed to test large diameter, installed, pre-cast concrete pipe. It's fast, safe and easy to use. A five-second test can determine joint integrity.
Low Pressure Joint Testing

Helpful Resources
FAQs
Can I get help with a joint tester?
Yes. There is a video on the Cherne page on YouTube that demonstrates how a joint tester works. Owner’s Manuals with specific instructions on assembling and using Cherne Joint Testers can be found in technical section of the Cherne website.
Can I order specific parts for a Honda test pump?
Owner’s Manuals and parts lists on all Cherne equipment can be located in the technical section of the Cherne website. http://www.cherneind.com/Data/ “pieces parts” – replacement parts for the hydrostatic test pumps and joint testers. We do not stock engine parts.
What is the test pressure called out in ASTM C1103 for joint testing?
3.5”
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