DIRECT ANSWERA replacement tube bundle must match measured shell, channel and support interfaces, not just nominal exchanger model. Check tubesheet gasket faces, bolt pattern, pass partition, baffle clearance, bundle length and pull space.
Fit-signoff dimensions
- Tubesheet OD, thickness and gasket/bolt details
- Pass-partition and channel interface
- Baffle OD, support rails and insertion length
- Nozzle and pull-space constraints
Relevant manufacturing capability
- Drawing, datasheet and equipment-list manufacturability review
- Self-manufactured and coordinated-supply scope identification
- Technical, quality, document and delivery clarification
Key notes
- Nominal shell diameter cannot establish fit to an aged or modified exchanger.