Test plugs sized up to 48" are now available, featuring the safety and durability of the innovative I-Series technology SHAKOPEE, Minn., Oct. 13, 2021 /PRNewswire/ -- Cherne Industries, part of ...

Airy's used several sizes of Cherne's pneumatic Muni-Ball plugs: 24 to 60-inch Muni-Ball plugs with a bypass, as well as 24 to 48-inch, and 24 to 36-inch plugs. Ideal for the installation and repair ...