The Application

Technical Aspects of Pressure Pipe Epoxy Spray Lining

Epoxy pipe lining resins are supplied as two-part solvent free systems consisting of resin or base material and hardener or activator. When properly mixed they will give a rapid cure, high-build, potable water certified material. The cured pipe lining material is inert and achieves pipe corrosion protection by providing an impermeable barrier, effectively separating the water from the pipe material, thereby preventing further corrosion.

The finished epoxy pipe coating is smooth and hard with excellent water resistance and hydraulic profile. The pipe lining will not impair the quality of potable water, nor will it affect the pH. The thin, smooth epoxy coating enhances pressurized pipe flow capacity of previously corroded water mains enabling operating pressure reduction to be readily achieved. The epoxy resin coatings are applied with the use of in-situ lining rigs equipped with heated materials storage tanks, umbilical hoses and application spray heads.

In the United Kingdom for example, there has been a complete transition from cement mortar pipe lining to the exclusive use of epoxy resin / polymeric pipe lining materials. The main reason for this change was the result of the development of water quality problems related to the lime composite of the cement mortar and the pH of soft water.

  • Application Surfaces: cast iron, steel, ductile iron, asbestos cement
  • Diameter range: 3 inches / 75 mm and larger
  • Lining thickness: 1 mm /40 mil as per code of practice
  • Lining lengths: up to 530 feet / 160 meters
  • Bends: up to a single long radius 45° for a 4 inches / 75 mm diameter
  • Advanced epoxy pipe restoration applications systems
  • Latest epoxy resin lining system technology
  • Flow metering / monitoring
  • ±5% controlled mix ratio
  • Heated umbilical hoses
  • Custom designed epoxy pipe coating application equipment
  • Durable, cost effective linings
  • Water main, fire hydrant suppression pipe and industrial process pipe applications
  • Certified to meet ANSI/NSF standard 61


Our proprietary Triton epoxy spray lining process was designed for non-structural and semi-structural renewal of 3” and larger pressurized water pipes and is one of the least disruptive pipelining rehabilitation technologies available. The process applies a potable water certified epoxy to rehabilitate deteriorated and corrosion clogged pipes. At the AWWA standard 1 mm thickness, most typical pipe pinhole leaks are sealed, water main and fire suppression flow ratings restored and the prevention of future water pipe corrosion is ensured.

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