The Clean-Seal 2 is engineered for testing DWV systems from one cleanout tee. Multiple built-in inputs provide for inflation and deflation of the natural rubber, pneumatic bladder, and system fill with either air or water. The hose-bib has a built-in check valve providing up to 50 psi of protection against siphoning back into the potable water system. It is also engineered to accept the included air valve providing the flexibility to test with air. Non-reactive polypropylene construction ensures lasting durability and ability to use thread sealant to seal worn or damaged cleanout tees. Molded adjustment tabs provide for orientation of the directional fill valve. The patent-pending Clean-Seal 2 is available in 2-, 3-, and 4-inch sizes.