Bundles

Bell & Gossett Replacement Tube Bundles

Replacing the Bundle Instead of the Exchanger

A removable bundle turns what would be a capital replacement into a maintenance item. The shell stays in place with its nozzle geometry, supports and pipework untouched, and a new bundle goes back into it.

When a bundle has reached the end. Plugged tube count is the usual indicator. Every plug removes surface area and shifts the flow distribution slightly, and plants routinely run past the point where the exchanger can still make its duty. Once plugging reaches the low single-digit percentages of tube count, a replacement bundle is worth costing against continued plugging.

Identification comes from the nameplate. The unit part number establishes the series, the shell diameter and length, the tube count and the pass arrangement, which is everything needed to build a bundle that fits. Measuring is a fallback, not a first choice.

Replacement is the moment to reconsider materials. If the old bundle failed by corrosion rather than mechanical damage, putting the same material back is repeating the experiment with a known outcome. The shell and nozzle geometry stay the same, so a material change costs only the material difference.

Order the gaskets at the same time. A bundle arriving without the head and tank gaskets it needs is a bundle that sits on the floor. They are consumables and they should be renewed whenever the joint is opened regardless.