Productintroduction 2324.1/4-10 G4 MK MK MKA MKY Sewage, Condensate and Heat Transfer Pumps Fields of Application MK, MKA Automatic drainage of rooms with flood hazard, collecting tanks or pits, condensate return from unpressurized tanks. MKY Condensate return plants, secondary and primary circuits of heating circuits, direct installation in heating tanks or heat exchangers of the secondary circuits of heat transfer plants. Operating Data Capacity Q 2 to 36 m3/h (0,56 to 10 l/s) Heads H up to 19 m Operating temperature t MK, MKA -10 C to +90 C MKY up to 200 C 2) Design Vertical submersible pumpwith three-channel impeller, volute casing de- signed as inlet strainer. Materails Medium handled MK, MKA Contaminated water (max. grain size 18 mm), oils, emulsions, aggres- sive media, given an appropriate material selection, condensate fromun- pressurized tanks. MKY Condensate, heat transfer media below boiling point. Drive Surface-cooled three-phase squirrel cage motor 230/400 V, type of con- struction V1, enclosure IP55 for standard motor, IP 54 for Ex-ell-T3, IP 55 for EEx-dellB+H2-T4. Bearings On the pump side: product-lubricated plain bearing. On the motor side grease-lubricated deep-groove ball bearing. Certification Certified quality management ISO 9001. Casing/Impeller Shaft Discharge pipe MK/MKA Cast iron Chrome steel Galvanized steel MK/MKA-B Tin Bronze Chrome nickel molybdenum steel Chrome nickel molybdenum steel MK/MKA-C Cast chrome nickel molybdenum steel Chrome nickel molybdenum steel Chrome nickel molybdenum steel MKY Cast iron Chrome steel Steel Material Bearing bush Possible applications Optiona additional de- vices Anti-fric- pro- Resistance to sand Dry- g Resistance to oil General chemi- cal resistance Tempera- ture limit = standard X t MK MK -B MK -C MKY External Grease tion perties runnincapacity = upon requesMKA MKA-B MKA-C lubrication (+= good . = not too good) C Stahl/Polytetrafluor- äthylen D ++ + + - Tin bronze X D X X + - -- + - Cast iron X X X X + - - + - + - Acrylnitrile-butadien- rubber X X X X X + +++ -- + + 80 Fluorcaoutchouc X X X X X + ++ - + - ++ 90 1) Polytetrafluor ethylene, glass-fibre reinforced X X + -- -- + +++ Carbon, impragnated with phenolic resin X D + - + - + + 90 Carbon, impregnated with antimony D + - + - + + 200 2) DEVA2 369/8-ZWH X X X + + - + + + 1) for MKY up to 100_C 2) for water up to 110_C

MK 2 MK/MKA 1) Norm = V1, IP55, Standardmotor / Standard motor / Moteur standard / Motore standard / standaard motor EX e = V1, IP54, Ex-ell-T3 Ex d = V1, IP 55, EEx-dellB+H2-T4

MK 3 MKY 1) Norm= V1, IP55, Standardmotor / Standard motor / Moteur standard / Motore standard / standaard motor EX e = V1, IP54, Ex-ell-T3 Ex d = V1, IP 55, EEx-dellB+H2-T4

2234.1/4-10 1.12.2005 Subject to technical modification without prior notice. KSB Aktiengesellschaft P.O. Box 1361, 91253 Pegnitz Bahnhofplatz 1, 91257 Pegnitz (Germany) Tel. +49 9241 71-0 Fax +49 9241 71-1791 www.ksb.com MK MKA 20