Vertical multistage centrifugal pumps in ring-section design

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1 Vertical multistage centrifugal pumps in ring-section design

2 Vertical multistage centrifugal pumps in ring-section design PUMP DESIGN Multistage centrifugal pumps in ring-section design, radially split, with closet radial impellers and suction impeller at 1st stage for lower NPSH values. Casing parts sealed by O-rings and assembled by robust tie bolts positioned externally at suction branch. Radial suction and flow inlet which can be rotatedevery 90. Flanges accordino to DIN and ANSI (drilling, sealing step and flange thickness). BEARING Flanged greace on both pump sides, lubrificated from the pompato liquid. Flanged oil-lubrificated bearings on the side commando of the pump AXIAL TRUST Pumps equipped with bilance drum for the hydraulic balancing of the impeller axial thrust. Residual thrust absorbed by axial bearing. SHAFT SEALS Cooled packing stuffing box, with or without barrage fluid injection. Single mechanical seal in accordance with DIN 24960, cooled or uncooled. APPLICATIONS Washing plants Artificial snowing plants Irrigation plants Heating plants Cooling plants Suprheated water plants Condensate lift plants High pressare lift plants Water feed and anti-fire plants WORKING FEATURES DN suct./flow 32/80 and 50/125 Q up to 100 m³/h ( l/s) H upto1000m max P up to 100 bar max T from 10 C a +140 C speed up to 2900 rpm standard flanges DIN Suction inlet PN16 - PN25 Flow inlet PN64 - PN100 Standard flanges ANSI Suction inlet Class Class 300 Flow inlet Class Class 900 COUPLING They are mode of a support that is equipped with athrust bearing piaced between the basic-plate and the electric motor. Two elastic semi-joints enable the trasmission of the motion from the motor to the pump. They are equipped with device against reverse.

3 Tecnical data TECNICHAL DATE Type pump mm Shaft diam. coupling Max. value P/n (Kw/1') Albero/Shaft x5crni Albero/Shaft SAF Impeller Diam. Max, mm Dimension packing mm Nr Max. liquid temperature Max. pressure on suction Max. pressure on descarge 4 Bar 140 C 16 Bar 6 2 Minimun number of stage 20 Maximun number of stage HP r.p.m EFFICIENCY REDUCTION For N stage For impeller material Bronze Steel Steel Inox Tollorances on performances according to ISO Degree 2, Annex A In order to keep its products constantly ahead of technical evolutions, NORIA s.r.l. has reserved right, without any prior notification, to modify dimensions and characteristics of the products described in this catalogue, Materials DIN NFA ASTM Cast iron Gg25 FT 25 A 48 : Nr.35 Ductile cast iron GGG42 FGS A 536 : Gr 6-A5-12 Bronze G Cu Sn 10 Cu Sn 8 B 584 : C90500 Bronze G Cu Pb 10 Sn Cu Sn 8 B 584 : C90500 Carbon steel GS C25 A 48 M A 216 WCB Carbon steel Cr X 20 Cr 13 Z 20 Cr 13 A 276 Tp. 420 Crbon Steel CrNiMo GX 6 CrNiMo 1812 Z 6 CND M A 296-CF8M Crbon Steel CrNiMo Duplex Steel X 5 CrNiMo 1812 SAF 2205 Z 6 CND M A 276 Tp. 420 SAF 2205 SAF 2205

4 Tecnical data Part. N Description Variants 1.1 (1) (1) Discarge casing Gg25 GG42 G GG25 GG Gg25 GG42 GG25 GG42 Stage casing 1310 Gg25 GG42 GG25 GG42 Bellmouth Diffuser Gg25 GX 6 CrNiMo Gg25 G Cu Sn 10 X 20 Cr 13 Wear ring 1600 Gg25 G Cu Sn 10 X 20 Cr 13 Bush 2100 X20 Cr 13 Shaft 2200 Gg25 G Cu Sn 10 GX 6 CrNiMo 1810 Impeller 2410 X20 Cr 13 Space sleeve 3311 Bearing bush suction side 3312 Bearing bush delivery side 3411 Sleeve suction side 3412 Sleeve delivery side 6210 Balance disc Part. N Description Variants Discarge casing GS C 25 GX 6 CrNiMo 1810 SAF Stage casing GS C 25 GX 6 CrNiMo 1810 SAF Bellmouth GS C 25 GX 6 CrNiMo 1810 SAF Diffuser GS C 25 GX 6 CrNiMo Wear ring X20 Cr 13 X 2 CrNiMo Bush X20 Cr 13 X 2 CrNiMo X 20 Cr 13 X 5 CrNiMo 1812 Shaft 2200 Impeller GS C 25 GX 6 CrNiMo X 20 Cr 13 X 2 CrNiMo 1810 Space sleeve 3311 Bearing bush suction side 3312 Bearing bush delivery side 3411 Sleeve suction side 3412 Sleeve delivery side 6210 Balance disc

5 Section Pump Discharge casing 3311 Bearing bush suction side 1150 Stage casing 3312 Bearing bush delivery side 1310 Bellmouth 3411 Sleeve suction side 1341 Support column 3412 Sleeve delivery side 1371 Delivery elbow O-Ring 1413 Diffuser last stage O-Ring 1450 Diffuser 6535 Counterflange 1500 Wear ring impeller 6571 Tie bolt 1600 Bush.1 Screw 2100 Shaft.2 Screw 2200 Impeller Nut 2210 Impeller suction stage 6710 Key for impeller 2410 Sleeve 6731 Key for shaft sleeve 2531 Retaing ring aplit 6855 Washer 2912 Impeller nut

6 Section electrical commando Adjusting nut 6515 Plug 3013 Thrust ball bearing 6531 Strainer 3142 Lantern 6544 Circlip 3200 Bearing housing 6570 Screw 3261 Bearing cover drive size 6573 Stud 3854 Oil filler plug.3 Screw 3856 Oil sight gauge.4 Screw 3860 Oil retaining tube.5 Screw 4110 Stuffing box housing.6 Screw 4120 Gland.7 Screw 4130 Gland packing.8 Screw 4132 Neck bush 6578 Screw 4134 Lantern ring Nut O-Ring Nut O-Ring 6737 Key for centring sleeve O-Ring 6742 Key for coupling O-Ring 7211 Coupling half drive side O-Ring 7221 Coupling half pump side