Cherne® Mechanical Cleanout Plugs provide quick and easy DWV stack testing, eliminating backsplash draining through a mechanical, tool-free operation. Featuring a two-stage locking mechanism that secures into test and drain positions, these mechanical cleanout plugs high test pressure up to 150 ft. head/65 PSI and feature a durable, replaceable rubber pad. A brass shut off valve is available for purchase separately. Cherne Industries is a global leader in pipe plugs and testing.