Polyethylene Encasements for Ductile Iron Pipe

Polyethylene acts as an unbonded film, which prevents direct contact of the pipe with the corrosive soil. It is both effective and economical. Its excellent dielectric properties enable it to effectively shield the pipe from low-level stray direct current. Polyethylene encasement is more cost effective when compared to other corrosion control systems like bonded coatings and cathodic protection. Polyethylene has been tested in many different soil conditions around the United States, some as long as 45 years with no deterioration. Click here for the DIPRA Polyethylene Encasement Study.

Advantages:

Proven effective protection
Provides a uniform environment for the pipe, virtually eliminating galvanic corrosion cells.
Protects the pipe without the formation of concentration cells at coating holidays.
Does not deteriorate underground.
Is easily repaired with polyethylene adhesive tape if damaged.
Does not require any special handling or packaging during shipment.
Inexpensive.
Simple to install.
Requires no additional manpower.
Requires no maintenance or monitoring.
Costs nothing to operate.