Trane RTHB 250
Pictured on this page is a completed Belzona epoxy coating job, from start to finish, on a Trane RTHB 250-ton condenser located in Denver, CO. Click the photos to the right to expand them for more clarity.
The before pictures show the tubesheets and endbells before we started our work. Severe corrosion and rust 'nodules' mark the degradation of all affected surfaces, which left to their devices, can begin to erode the seal between tubes and tubesheets and allow leaks from the O-ring gasket surface.
Our technicians grit blasted all of this debris off of both surfaces so that clean metal is exposed, free from corrosion and rust. They then hand-mixed and applied the Belzona epoxy product to the all affected surfaces, without allowing any to enter the tubes. The coating is applied in two colors to ensure not only 100% coverage, but also proper thickness of the coating for its long-term durability. As a further measure, we eliminated the previous O-ring gasket area and installed new, full-face gaskets that allow two things: prevention of cracking on the new epoxy coating, and the ability to re-use the gasket two to three more times between changes.