Pipe Parts/FittingsCherne I-Series Test-Ball PlugsI-Series Test-Ball Plugs from Cherne Industries are lightweight, short and flexible, delivering solutions for a variety of applications, including blocking and bypassing flow, installing new pipes and junction boxes or repairing old ones, and installing or repairing utility holes. Available in eight expansion ranges from 6 to 24 inches, they meet U.S. and international industrial and municipal needs for engineers and contractors. The plugs feature robotic, mechanical bonding of aluminum end plates to the plugs’ premium natural rubber to eliminate chemical bonding failures. They provide improved performance and safety through optimized design and maximum backpressure of 15 psi, with inflation pressure of 45
