1. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 1 Special Centrifugal Pumps Proved for over 60 years in Fertilizer Industry Chemical / Pharmaceutical Industry Power Plants

2. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 2 Special Centrifugal Pumps Bungartz system since 1930 Contactless hydrodynamic shaft seal by back vanes or additonal seal expeller

3. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 3 Advantages of System Bungartz Sealing of shaft clearance (rotating shaft – standstill casing) hydrodynamic by additional vanes During operation no extra seal required (for example stuffing box or mechanical seal)  Saving of a maintenance part

4. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 4 Hydrodynamic sealing HSHS H2H2 H2H2 vanes Back vanes

5. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 5 Comparison Bungartz-Pump No friction between packing and shaft No lubrication required No wear No leaking during operation Pump with packing Friction between packing and shaft Lubrication required wear Leaking not avoidable

6. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 6 Comparison Bungartz-Pump Maintenance-free  Safety operation during long operation Pump with packing Regular check

7. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 7 Type: MOR for small suction head < 3-4 mCl with one impeller vanes < back vanes

8. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 8 Type: UMOR For high suction head Up to 30 mCl With additional seal expeller

9. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 9 Heavy duty bearing bracket Big shaft Bearing design for worste case  There are pumps in operation, we have delivered 40 years ago

10. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 10 Model M-UMOR vanes Back vanes Seal expeller Stuffing box Circula- tion port Centrifugal governor

11. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 11 Design: M-MOR wearing plates with simple geometry wearing plates are cheap spare parts wearing plates are also available in materials with high hardness

12. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 12 MOS (without flight governor)

13. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 13 Design: SK-MOR Welded construction Materials available, which are not castable for example Zirconium, Titanium, Tantal Using of homogeneous milled materials

14. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 14 Design: E -MOR Cast iron coated with rubber

15. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 15 Design: P-Si-MOR Pump of Silicon Iron For very corrosive fluids (80%H2SO4, t = 160°C) additional amoured with grey cast iron

16. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 16 Example for Applications Fertilizer Industrie Ammoniumnitrat Phosphoric Acid Sulphuric Acid Urea Melt

17. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 17 Ammoniumnitrat (96-98%) With heating With heat detector connections With drain device With Connections for flushing

18. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 18 Ammoniumnitrat (96-98%)

19. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 19 98% AN - Melt Liquid near the boiling point Special pump with low NPSH

20. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 20 99,6% AN-Melt T = 175°C

21. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 21 Ammoniumnitrat (max 70%) With mechanical seal Throttle bushing

22. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 22 Sulphuric Acid Horizontal Pump –Type MOR (98% Sulphuric Acid, tmax 90°C) –Type P-Si-UMOR ( Sulphuric Acid, t > 100°C, with solids) Vertical Pumps –With bearing in the liquid –Without bearings in the liquid

23. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 23 Sulfuric Acid Duplexmaterials Nickel based alloys Silicon Iron

24. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 24 Sulphuric Acid Hydrodynamic shaft seal T > 100 °C No problems with solids

25. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 25 Sulphuric Acid

26. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 26 Phosphoric Acid Horizontal Pumps Type M-UMOR Vertical Pumps Type T (without bearings in the liquid Material depending on the concentration and the solids (for example Gypsum)

27. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 27 Phosphoric Acid M-MOR or M-UMOR With wear plates similar Sanicro28 also for gascontaining liquids

28. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 28 Phosphoric Acid Without bearings in the liquid lenght up to 1,2m

29. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 29 Nitric Acid For high suction heads 1.4301 (middle concentration) 1.4361 (high concentration)

30. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 30 Nitric acid

31. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 31 Urea Solution and Urea Melt T = 140 °C Vacuum 0,3 bar abs

32. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 32 Urea Melt with stuffing box with heating

33. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 33

34. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 34 Slurry pump with mechanical seal

35. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 35 Mechanical seal for slurry OUT IN

36. 01.12.2004Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com 36