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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 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.
We believe that pipe
couplings should be as durable as the pipe they join. Ours is.
We have built a solid tradition, through independent testing, to demonstrate
the performance of our products. We have also demonstrated our
commitment to quality and reliability by offering you the strongest written
guarantee in the industry.

Clamp-All guarantees
its hubless couplings, Approved to Factory Mutual Standard FM-1680 Class 1
at 15 PSI rated working pressure, to be free from defects in material and
workmanship. Clamp-All further warrants that these couplings will not
fail due to rust, rot or corrosion for the normal life expectancy of the
materials joined, when installed in a normal building environment or in
naturally occurring soils.
Installation must be in
accordance with our printed installation instructions and in conformance
with local code requirements.
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