초록 ▼

A dual containment pipe system suitable for installation into an existing conduit includes animpervious containment pipe adapted to be installed as a primary containment pipe and a crush-resistant and flexible spacer element disposed about the entire external circumference of the primary containment

A dual containment pipe system suitable for installation into an existing conduit includes animpervious containment pipe adapted to be installed as a primary containment pipe and a crush-resistant and flexible spacer element disposed about the entire external circumference of the primary containment pipe. The spacer is formed of a plurality of spaced apart and parallel substantially crush-resistant longitudinal members with a plurality of spaced apart parallel flexible connecting ribs bonded thereto. The longitudinal members form a uniform space when the containment pipe suitable for installation of leak detection systems including cables or based on measuring pressure differentials. The new impervious primary containment pipe may be cured in place, folded and formed, diameter reduced pipe, or any other pipe suitable for pipeline rehabilitation.

대표청구항 ▼

[ What is claimed is:] [1.] A dual containment pipe system suitable for installation into an existing secondary containment conduit of a given length, comprisingan impervious primary containment pipe which is adapted to be installed in the existing secondary containment conduit and after installatio

[ What is claimed is:] [1.] A dual containment pipe system suitable for installation into an existing secondary containment conduit of a given length, comprisingan impervious primary containment pipe which is adapted to be installed in the existing secondary containment conduit and after installation is configured to conform to the interior configuration of the secondary containment conduit, andsubstantially crush-resistant spacer means disposed about the entire external circumference and along substantially the entire length of the primary containment pipe for maintaining the primary and secondary containment pipe substantially coaxial by forming a substantially uniform space between the primary containment pipe and the secondary containment conduit after installation of the primary containment pipe.