Cherne 270-067 6" Test Ball. From Gauges to Test Plugs, Cherne has been the industries leading manufacturer for years. Their quality products are designed and upgraded to better test, and more accurately check and analyze the work at hand. Cherne Test-Balls are now available with patented Rupture Disc Technology. This feature prevents over inflation of the pneumatic plug. Designed for applications from pressure testing and blocking of residential DWV systems to repair maintenance and installation of municipal infrastructure including storm and sanitary sewer piping systems.
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