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Quotes - Engineering - Sales| PRODUCT | STYLE | TEMA TYPE | BUNDLE |
| U-Tube Heat Exchanger | U-Tube, single tubesheet | BEU / AEU / BKU | Removable |
Replacement U-Tube Bundles
Matching an Existing Shell
Replacing a bundle is a dimensional exercise before it is a thermal one. The new assembly has to seat in the same shell, seal against the same faces, and clear the same nozzles. Once that is settled, the tube material and count can be reconsidered on their merits.
Stock sanitary bundles. Common sizes are held in 304L and 316L with a polished finish and O-ring or PTFE gasket sealing, which covers a large share of standard sanitary steam-to-liquid exchangers.
Built to match. Everything else is fabricated to the existing shell. With drawings or a U-1 form this is straightforward. Without them, a nameplate photograph and a set of field measurements is normally enough to reconstruct the geometry.
Upgrade while you are there. A replacement is the cheapest opportunity to change tube alloy, adjust tube gauge, or correct a pass arrangement that never suited the duty. The fit stays identical; the exchanger gets better.
Typical Construction
- Stock sizes: Common sanitary diameters and lengths held in inventory
- Stock materials: 304L and 316L stainless steel
- Stock finish: Polished product contact surfaces
- Sealing: O-ring or PTFE gasket, supplied with the bundle
- Custom builds: Matched to existing shell geometry
- Source data: Drawings, U-1 data report, or nameplate plus field measurements
- Alloy upgrades: 304L to 316L, duplex, high alloys or titanium
- Tube joints: Rolled, roll-plus-seal-weld or strength welded to match or improve
- Testing: Hydrostatic test with documented records
- Codes: ASME Section VIII where the original was code stamped
Replacement U-Tube Bundles
U-TUBE • CONSTRUCTION
Bundle Gaskets & O-Rings
Gaskets and o-rings for U-tube heat exchanger bundles. Material selection by temperature and chemistry, sanitary versus industrial choices, and why th
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U-TUBE • CONSTRUCTION
Sanitary U-Tube
Sanitary U-tube heat exchangers in 316L with tri-clamp connections, drainable geometry and removable bundles. Built for 3-A duty and CIP circuits.
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U-TUBE • CONSTRUCTION
Pharmaceutical U-Tube
Pharmaceutical U-tube heat exchangers built to ASME BPE with documented welds, controlled dead legs, double tubesheets and a qualification-ready docum
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What to Measure If Nothing Survives
Shell inside diameter and overall length. Tubesheet outside diameter, thickness, bolt circle and hole pattern. Tube outside diameter, wall thickness, count, pitch and layout angle. Nozzle sizes, ratings and locations. Baffle spacing if the old bundle can be examined. Gasket dimensions and type.
That list looks long and takes about an hour with a tape and a caliper. Photographs of the tubesheet face and the withdrawn bundle help considerably, and we will happily talk it through on the phone while someone is standing at the equipment.
Fit Problems That Show Up at Installation
Three recur. Gasket thickness that differs from the original, which changes the compressed stack height and the bolt load. Baffle-to-shell clearance that was generous on the original and tight on the replacement, or the reverse, which changes shell-side bypass and therefore performance. And nozzle projection that interferes with insulation or adjacent pipework.
All three are avoidable by measuring rather than assuming, which is why we would rather ask a few extra questions at quotation than solve them on site.
