Cherne's Gripper plugs can be used in a variety of applications including DWV (drain, waste and vent) testing and stack testing. End-of-Pipe design won't fall in, whereas the Inside-of-Pipe design allows you to locate the plug inside the pipe as far as you need. Time tested, the Gripper remains one of the most popular mechanical plugs on the market.
Hub-Fit Gripper Plug Features: Ideal for use in hub fittings and in bell-end pipe. Pressure rated for conducting DWV tests. Made with glass-reinforced ABS plastic. Yellow color for greater visibility in pipe. Natural rubber o-ring for positive seal. Galvanized carriage bolt to prevent corrosion. Easy-to-install, extra large zinc wing nut – won't rust.
Clean-Out Gripper Plug Features: Guaranteed to seal any damaged threads. Made with glass-reinforced ABS plastic. Black color blends well with cast-iron pipe. Stainless steel hardware. NPT sizes, including hard to find 3½'. Natural rubber threaded o-ring for positive seal.
T-Handle Aluminum Gripper Plug Features: Ideal for long term applications. 6' - 12' plugs are sized for concrete, clay, and SDR 26 and 35 pipe. 15' and 18' plugs are sized for concrete and clay pipe sizes only. Available with or without bypass. Can be used for sewer air pressure tests.
Monitor-Well Locking Plug Features: Designed to seal monitor wells. Meets all EPA requirements for locking plugs. Sized to seal Schedule 40 piping. 2' and 4' sizes can also seal Schedule 5 pipe. Works with Cherne's solid brass padlock.