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shown in the Table 3.1, 3-digit codes specify the types of front-end, shell, and rear-end
of shell and tube exchangers.

Typical parts and connections shown in Figures 3.2, 3.3 and 3.4 are summarized
below.

1. Shell 16. Tubes (U-type)

2. Shell cover 17. Tie rods and spacers

3. Shell flange (channel end) 18. Transverse (or cross) baffles or

support plates

4. Shell flange (cover end) 19. Longitudinal baffles

5. Shell nozzle or branch 20. Impingement baffles

6. Floating tube sheet 21. Floating head support

7. Floating head cover 22. Pass partition

8. Floating head flange 23. Vent connection

9. Floating head gland 24. Drain connection

10. Floating head backing ring 25. Instrument connection

11. Stationary tube sheet 26. Expansion bellows

12. Channel or stationary head 27. Support saddles

13. Channel cover 28. Lifting lugs

14. Channel nozzle or branch 29. Weir

15. Tube (straight) 30. Liquid level connection

29