McTighe oil-water separators are built to last. Our engineering staff verifies that the separator coatings will withstand the known contaminants the separator will experience. McTighe offers durable epoxies and polyurethanes for interior and exterior corrosion protection. Contact McTighe for coating recommendations to meet your project requirements.

For buried cylindrical separators, there are two main corrosion protection systems we supply (fiberglass composite tanks and cathodically protected tanks). Both come with a 30 year limited warranty against external corrosion failure.

* The Fiberglass Reinforced Polyester (FRP) corrosion protection systems we utilize are built in accordance with UL-1746 Part II or Part III criteria. These FRP coated oil-water separators do not require electrical isolation, cathodic protection anodes or the monitoring requirements that are associated with cathodic protection systems. The UL-1746 fiberglass coated separators have independent third party approval of the corrosion protection system which is required in some states.

* The cathodic protection system we supply is the Steel Tank Institute Sti-P3* that typically consists of an external epoxy or polyurethane coating and is provided with anodes and electrical isolation fittings. McTighe includes a PP4 monitoring station with every Sti-P3* separator we sell. This simplifies the monitoring of the anodes and only requires a voltmeter to obtain a reading. Many of our competitors provide less expensive monitoring stations requiring the customer to provide a separate copper/copper sulfate reference cell.

See additional information on fiberglass and Sti-P3* exterior corrosion protection systems following this page. Contact McTighe Industries for information on alternate interior or exterior coatings. We have coatings to meet industry and military specifications.