uses a pivoting cam system to expand a traditional
drain stopper whereby a rubber seal is forced onto the
pipe wall causing temporary sealing of the end of an
open pipe, duct or drain
The
Technical Bit:
In
pressure tests against the traditional wing nut stopper,
when set in opposing ends of a common test pipe, the
always withstood a higher pressure before peak movement.
The traditional plug usually fails by twisting. This is
restricted on the
by the locating heel set in the pipe invert or crown
Key
Benefits
The
can be installed up to 6 times quicker than
a standard stopper and retrieved up to 20
times quicker in a 900mm deep inspection chamber.
The operator does not have to enter the manhole to retrieve
the unit providing a rope is attached during installation.
Also
Note
has also been granted approval by WRc under the 'WRc Approved
TM' certificate number PT/266/0903.