The Clamp-All® coupling was designed to fulfill a need in the plumbing industry for a heavy duty coupling to join storm and sanitary DWV piping systems above and below grade. Since the company was formed, Clamp-All products not only has met the need to design and produce a high reliability coupling for hubless cast iron pipe, but has been an advocate for the development and adoption of realistic performance standards and independent third party testing.
Clamp-All believes that pipe couplings should be as durable as the pipe they join, and it has built a solid tradition, through independent testing, to demonstrate the performance of its products. Clamp-All demonstrates its commitment to quality and reliability by offering the strongest written guarantee in the industry.
The only connection you will ever need for joining DWV pipe.