7
1. Front section U 22D
2. Middle section with a cutout
3. Middle section with a strip
4. Rest
section
5. Plug
6. Insert
7. Anchor
bolt
8. Sealing
9. Clack valve of the thermomanometer
10. Thermostat well
Fig. no. 3 Diagram of VIADRUS HERCULES U 22 D boiler drum