SIGMA PUMPY HRANICE CENTRIFUGAL MULTISTAGE HORIZONTAL PUMPS

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1 SIGMA PUMPY HRANICE CENTRIFUGAL MULTISTAGE HORIZONTAL PUMPS LV SIGMA PUMPY HRANICE, s.r.o. Tovární 605, Hranice, Czech Republic tel.: , fax:

Tovární 605, 753 01 Hranice, Czech Republic tel.

2 Applications The LV range pumps are intended for handling drinking or service water of temperature up to 80 C without mechanical impurities. The pumps are frequently used in municipal as well as industrial water works, in water fire fighting pumping stations, in irrigation systems, etc. Description The pumps are of centrifugal, multistage design, with radial flow impellers and horizontal axis. They consist of a rotor and a stator with bearings and stuffing boxes. THE STATOR of the pump is assembled from stage casings sealed with rubber sealing rings and clamped between the suction and the discharge bodies into one integral subassembly by means of clamping bolts which are arranged outside the pump body. The pump stands on foots which are situated on stage casings. Because the suction body has no foots it is possible to turn it at different arrangements. THE ROTOR of the pump consists of shaft and of one-sided inlet impellers which are fixed with keys and tightened by means of bushes with nuts. The shaft is supported on ball bearings at both sides. Driven end of the shaft is taken out at discharge side of the pump. There are balancing holes in impellers to equalise (partly) the hydraulic axial force of the rotor. The remaining part of the axial force is taken up with bearings. The complete rotor is statically balanced so that smooth operation of the pump is ensured. THE STUFFING BOX of the pump is gland packing type. Quality of gland packing cord is chosen according to properties of pumped liquid. Material Design LN - Suction body, discharge body, diffusers, impellers, bearing covers, packing covers, shaft sleeves, distance rings and flooding bushes are made of grey cast iron. Shaft, clamping bolts and nuts are made of steel. Stage bushes and wearing rings are made of brass or bronze. LB - Impellers are made of bronze. Arrangement of Branches The suction branch - standard arrangement is downwards ( so called S-180 position) On the request it is possible to supply also suction branch in arrangements S-90 and S-270. The discharge branch is always pointed upwards. ( so called T-0 position ) Direction of Rotation The pumps are clockwise turning units when viewing from drive side. Range of Delivery Generally, the following ranges in accordance with ÈSN are available. Range 1 the pump only with bare end shaft Range 2 the pump with complete flexible coupling Range 3 the pump with complete flexible coupling and with common base plate for pump and electric motor, but without the motor Range 9 Range 10 Range 11 the pump coupled with complete flexible coupling to electric motor mounted on common base plate the pump coupled with complete flexible coupling to petrol engine mounted on common base plate the pump coupled with complete flexible coupling to diesel engine mounted on common base plate Standard Accessories One set of gland packing cord is supplied with each pump. If base plate is part of our delivery set of foundation bolts is supplied, too. Holes for connection of pressure gauge and vacuum gauge are plugged.

Description The pumps are of centrifugal, multistage design, with radial flow impellers and horizontal axis. They consist of a rotor and a stator with bearings and stuffing boxes.

3 Informative Sectional Drawing Bearing cover 25 Ball bearing 6 Shaft 29 Ball bearing 9 Wearing ring 32 Packing cover 13 Impeller 33 Gland packing cord 19 Shaft sleeve 34 Flooding bush 20 Gland packing cord 37 Bush of stage 21 Discharge body 41 Diffuser 22 Packing cover 43 Impeller - basic

cover 13 Impeller 33 Gland packing cord 19 Shaft sleeve 34 Flooding bush 20 Gland

4 Technical Data The parameters following are valid for water, temperature t = 20 C, density ρ = 1000 kg/m 3, revolutions n = 1450 R.P.M. Number Flow Delivery Power Speeds Flanges Weight Type of of capacity Head Input Range 1 the pump stages Q H of pump Pi n suction discharge m [l.s -1 ] [m] [kw] [R.P.M.] DN/PN DN/PN [kg] ,4 *3 13,3 23 5, ,6 3 13,3 35 7, / / ,8 L-VA4-D 4 13, , , ,2 6 13, , ,4 7 13, , ,7 28 5,1 *3 14,2 26 5, ,5 23 6,1 11,7 42 7,7 3 14,2 39 8, ,5 35 9,2 11, ,2 4 14, , , ,2 11, ,8 L-VN4-D 5 14, , /10 100/ , ,3 11, ,3 6 14, , , ,3 11, ,9 7 14, , ,4 11, ,4 8 14, , , , , ,2 190 L-VN5-D , , , , /10 125/10 Output of electric motor ( engine) must be higher about 15-20% than the power input stated in the table. *This means the pump with one blank stage for occasional applications only

] DN/PN DN/PN [kg] 10 28 4,4 *3 13,3 23 5,2 83 10 42 6,6 3 13,3 35 7,8 104 1450 80/10 10 80/10 56 8,8 L-VA4-D 4 13,3 46 10,4 125 10 70 11 5 13,3 58 13 146 10 83 13,2 6 13,3 70 15,6 169 10 97 15,4 7

5 Dimensions N Dvr dv C B A TO Dv Ev l d a b S90 J S270 K H Es Ds U ds Dsr Ta P G P Tb F O S180 L M S Dv Ds TYPE ST. A B C Dvr dv DN PN Ev Dsr ds DN PN Es F G H J K L M N O P R S Ta Tb U a b d l L-VA-4-D L-VN-4-D L-VN-5-D x x , x x x x , , ,

4x18 210 885 6 560 280 955 7 630 350 1025 3 250 350 145 22 22 330 70 220 130 180 280 320 14 745 65 65 50 40 25 20 38,3 10 35 62 4 420 140 815 5 490 210 885 100 10

6 Informative Performance Chart of the Pump H[m] Q[l.s -1 ] [m 3.h -1 ]

SVA SIGMA PUMPY HRANICE SELF PRIMING PUMPS 426 2.98 16.05

SVA SIGMA PUMPY HRANICE SELF PRIMING PUMPS 426 2.98 16.05 SIGMA PUMPY HRANICE SELF PRIMING PUMPS SVA SIGMA PUMPY HRANICE, s.r.o. Tovární 605, 753 01 Hranice, Czech Republic tel.: +40 581 661 111, fax: +40 581 60 587 Email: sigmahra@sigmahra.cz 46.98 16.05 Applications