Cherne i2-Series Flow-Through Plugs offer a full bypass, allowing for both testing and monitoring of piping systems. Ideal for installation and repair of residential or commercial piping systems, these bypass plugs can also be used for maintenance of municipal infrastructure, including sanitary and storm sewer pipe systems. With an optimized design that offers improved safety and performance, these flow-through plugs are short, lightweight and flexible for easy installation and use in compact spaces.