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Horizontal multistage pumps for feeding DG boilers
Horizontal multistage feed pumps for boiler types D/DG are horizontal single-stage suction multistage sectional centrifugal pumps. Can pump hot water, oils, corrosive media and media containing abrasive substances.
Description
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Product Description
Horizontal multistage feed pumps for boiler types D/DG are horizontal single-stage suction multistage sectional centrifugal pumps. Can pump hot water, oils, corrosive media and media containing abrasive substances. Designed for pumping clean water or liquids similar to it in physical and chemical properties, not containing solid particles, with a temperature not exceeding 105°C. Used to supply boilers with water or to pump hot water or hot water-like media. The permissible inlet pressure is less than 0.6 MPa.
Operating conditions
- Advanced hydraulic model, high efficiency, wide performance range. The pump runs smoothly with low noise.
- The mechanical shaft seal is made in the form of a soft stuffing box or mechanical seal, which ensures reliable sealing, simple structure and easy maintenance.
- The shaft has a fully protected design, which guarantees no contact with the environment, prevents corrosion and ensures a long service life.
Scope of application
Suitable for industrial and municipal water supply and drainage, pressurization of water supply to high-rise buildings, irrigation of parks and gardens, pressurization of fire extinguishing systems, long-distance pumping, heating, pressurization of hot and cold water circulation systems in bathrooms and related equipment, especially suitable for supplying water to small boilers.
Performance Options
| No. | Model | Flow (m³/h) | Head (m) | Power (kW) | Rotation speed (rpm) |
| 1 | D/DG6-25*2 | 6.3 | 50 | 3 | 2950 |
| 2 | D/DG6-25*3 | 75 | 5.5 | ||
| 3 | D/DG6-25*4 | 100 | 7.5 | ||
| 4 | D/DG6-25*5 | 125 | 7.5 | ||
| 5 | D/DG6-25*6 | 150 | 11 | ||
| 6 | D/DG6-25*7 | 175 | 11 | ||
| 7 | D/DG6-25*8 | 200 | 15 | ||
| 8 | D/DG6-25*9 | 225 | 15 | ||
| 9 | D/DG6-25*10 | 250 | 18.5 | ||
| 10 | D/DG6-25*11 | 275 | 18.5 | ||
| 11 | D/DG6-25*12 | 300 | 18.5 | ||
| 12 | D/DG6-50*2 | 6.3 | 100 | 11 | 2950 |
| 13 | D/DG6-50*3 | 150 | 15 | ||
| 14 | D/DG6-50*4 | 200 | 18.5 | ||
| 15 | D/DG6-50*5 | 250 | 22 | ||
| 16 | D/DG6-50*6 | 300 | 30 | ||
| 17 | D/DG6-50*7 | 350 | 30 | ||
| 18 | D/DG6-50*8 | 400 | 37 | ||
| 19 | D/DG6-50*9 | 450 | 37 | ||
| 20 | D/DG6-50*10 | 500 | 45 | ||
| 21 | D/DG6-50*11 | 550 | 45 | ||
| 22 | D/DG6-50*12 | 600 | 55 | ||
| 23 | D/DG12-25*2 | 12.5 | 50 | 5.5 | 2950 |
| 24 | D/DG12-25*3 | 75 | 7.5 | ||
| 25 | D/DG12-25*4 | 100 | 11 | ||
| 26 | D/DG12-25*5 | 125 | 11 | ||
| 27 | D/DG12-25*6 | 150 | 15 | ||
| 28 | D/DG12-25*7 | 175 | 15 | ||
| 29 | D/DG12-25*8 | 200 | 18.5 | ||
| 30 | D/DG12-25*9 | 225 | 18.5 | ||
| 31 | D/DG12-25*10 | 250 | 22 | ||
| 32 | D/DG12-25*11 | 275 | 22 | ||
| 33 | D/DG12-25*12 | 300 | 30 | ||
| 34 | D/DG12-50*2 | 12.5 | 100 | 11 | 2950 |
| 35 | D/DG12-50*3 | 150 | 18.5 | ||
| 36 | D/DG12-50*4 | 200 | 22 | ||
| 37 | D/DG12-50*5 | 250 | 30 | ||
| 38 | D/DG12-50*6 | 300 | 30 | ||
| 39 | D/DG12-50*7 | 350 | 37 | ||
| 40 | D/DG12-50*8 | 400 | 45 | ||
| 41 | D/DG12-50*9 | 450 | 45 | ||
| 42 | D/DG12-50*10 | 500 | 55 | ||
| 43 | D/DG12-50*11 | 550 | 55 | ||
| 44 | D/DG12-50*12 | 600 | 75 | ||
| 45 | D/DG25-30*2 | 25 | 60 | 11 | 2950 |
| 46 | D/DG25-30*3 | 90 | 15 | ||
| 47 | D/DG25-30*4 | 120 | 18.5 | ||
| 48 | D/DG25-30*5 | 150 | 22 | ||
| 49 | D/DG25-30*6 | 180 | 30 | ||
| 50 | D/DG25-30*7 | 210 | 30 | ||
| 51 | D/DG25-30*8 | 240 | 37 | ||
| 52 | D/DG25-30*9 | 270 | 37 | ||
| 53 | D/DG25-30*10 | 300 | 45 | ||
| 54 | D/DG25-50*2 | 25 | 100 | 18.5 | 2950 |
| 55 | D/DG25-50*3 | 150 | 22 | ||
| 56 | D/DG25-50*4 | 200 | 30 | ||
| 57 | D/DG25-50*5 | 250 | 37 | ||
| 58 | D/DG25-50*6 | 300 | 45 | ||
| 59 | D/DG25-50*7 | 350 | 55 | ||
| 60 | D/DG25-50*8 | 400 | 75 | ||
| 61 | D/DG25-50*9 | 450 | 75 | ||
| 62 | D/DG25-50*10 | 500 | 75 | ||
| 63 | D/DG25-50*11 | 550 | 90 | ||
| 64 | D/DG25-50*12 | 600 | 110 | ||
| 65 | D/DG46-30*2 | 46 | 60 | 15 | 2950 |
| 66 | D/DG46-30*3 | 90 | 22 | ||
| 67 | D/DG46-30*4 | 120 | 30 | ||
| 68 | D/DG46-30*5 | 150 | 37 | ||
| 69 | D/DG46-30*6 | 180 | 37 | ||
| 70 | D/DG46-30*7 | 210 | 45 | ||
| 71 | D/DG46-30*8 | 240 | 55 | ||
| 72 | D/DG46-30*9 | 270 | 55 | ||
| 73 | D/DG46-30*10 | 300 | 75 | ||
| 74 | D/DG46-50*2 | 46 | 100 | 30 | 2950 |
| 75 | D/DG46-50*3 | 150 | 37 | ||
| 76 | D/DG46-50*4 | 200 | 45 | ||
| 77 | D/DG46-50*5 | 250 | 55 | ||
| 78 | D/DG46-50*6 | 300 | 75 | ||
| 79 | D/DG46-50*7 | 350 | 90 | ||
| 80 | D/DG46-50*8 | 400 | 90 | ||
| 81 | D/DG46-50*9 | 450 | 110 | ||
| 82 | D/DG46-50*10 | 500 | 110 | ||
| 83 | D/DG46-50*11 | 550 | 132 | ||
| 84 | D/DG46-50*12 | 600 | 132 | ||
| 85 | D/DG85-45*2 | 85 | 90 | 37 | 2950 |
| 86 | D/DG85-45*3 | 135 | 55 | ||
| 87 | D/DG85-45*4 | 180 | 75 | ||
| 88 | D/DG85-45*5 | 225 | 90 | ||
| 89 | D/DG85-45*6 | 270 | 110 | ||
| 90 | D/DG85-45*7 | 315 | 132 | ||
| 91 | D/DG85-45*8 | 360 | 132 | ||
| 92 | D/DG85-45*9 | 405 | 160 | ||
| 93 | D/DG85-67*3 | 85 | 201 | 90 | 2950 |
| 94 | D/DG85-67*4 | 268 | 110 | ||
| 95 | D/DG85-67*5 | 335 | 132 | ||
| 96 | D/DG85-67*6 | 402 | 160 | ||
| 97 | D/DG85-67*7 | 469 | 185 | ||
| 98 | D/DG85-67*8 | 536 | 220 | ||
| 99 | D/DG85-67*9 | 603 | 250 | ||
| 100 | D/DG120-50*2 | 120 | 100 | 55 | 2950 |
| 101 | D/DG120-50*3 | 150 | 90 | ||
| 102 | D/DG120-50*4 | 200 | 110 | ||
| 103 | D/DG120-50*5 | 250 | 132 | ||
| 104 | D/DG120-50*6 | 300 | 160 | ||
| 105 | D/DG120-50*7 | 350 | 200 | ||
| 106 | D/DG120-50*8 | 400 | 200 | ||
| 107 | D/DG120-50*9 | 450 | 220 | ||
| 108 | D155-30*2 | 155 | 60 | 45 | 1450 |
| 109 | D155-30*3 | 90 | 75 | ||
| 110 | D155-30*4 | 120 | 90 | ||
| 111 | D155-30*5 | 150 | 110 | ||
| 112 | D155-30*6 | 180 | 132 | ||
| 113 | D155-30*7 | 210 | 160 | ||
| 114 | D155-30*8 | 240 | 200 | ||
| 115 | D155-30*9 | 270 | 200 | ||
| 116 | D155-30*10 | 300 | 220 | ||
| 117 | D/DG155-67*2 | 155 | 134 | 90 | 2950 |
| 118 | D/DG155-67*3 | 201 | 132 | ||
| 119 | D/DG155-67*4 | 268 | 185 | ||
| 120 | D/DG155-67*5 | 335 | 220 | ||
| 121 | D/DG155-67*6 | 402 | 280 | ||
| 122 | D/DG155-67*7 | 469 | 315 | ||
| 123 | D/DG155-67*8 | 536 | 355 | ||
| 124 | D/DG155-67*9 | 603 | 450 | ||
| 125 | D280-43*2 | 280 | 86 | 110 | 1450 |
| 126 | D280-43*3 | 129 | 160 | ||
| 127 | D280-43*4 | 172 | 200 | ||
| 128 | D280-43*5 | 215 | 250 | ||
| 129 | D280-43*6 | 258 | 315 | ||
| 130 | D280-43*7 | 301 | 355 | ||
| 131 | D280-43*8 | 344 | 450 | ||
| 132 | D280-43*9 | 387 | 450 | ||
| 133 | D280-43*10 | 430 | 500 | ||
| 134 | D280-65*2 | 280 | 130 | 185 | 1450 |
| 135 | D280-65*3 | 195 | 280 | ||
| 136 | D280-65*4 | 260 | 355 | ||
| 137 | D280-65*5 | 325 | 450 | ||
| 138 | D280-65*6 | 390 | 500 | ||
| 139 | D280-65*7 | 455 | 630 | ||
| 140 | D280-65*8 | 520 | 710 | ||
| 141 | D280-65*9 | 585 | 800 | ||
| 142 | D280-65*10 | 650 | 900 | ||
| 143 | D360-40*2 | 360 | 80 | 132 | 1450 |
| 144 | D360-40*3 | 120 | 185 | ||
| 145 | D360-40*4 | 160 | 250 | ||
| 146 | D360-40*5 | 200 | 315 | ||
| 147 | D360-40*6 | 240 | 400 | ||
| 148 | D360-40*7 | 280 | 450 | ||
| 149 | D360-40*8 | 320 | 500 | ||
| 150 | D360-40*9 | 360 | 560 | ||
| 151 | D360-40*10 | 400 | 630 | ||
| 152 | D450-60*2 | 450 | 120 | 250 | 1450 |
| 153 | D450-60*3 | 180 | 355 | ||
| 154 | D450-60*4 | 240 | 500 | ||
| 155 | D450-60*5 | 300 | 560 | ||
| 156 | D450-60*6 | 360 | 710 | ||
| 157 | D450-60*7 | 420 | 800 | ||
| 158 | D450-60*8 | 480 | 900 | ||
| 159 | D450-60*9 | 540 | 1000 | ||
| 160 | D450-60*10 | 600 | 1120 | ||
| 161 | D500-57*2 | 500 | 114 | 250 | 1450 |
| 162 | D500-57*3 | 171 | 355 | ||
| 163 | D500-57*4 | 228 | 500 | ||
| 164 | D500-57*5 | 285 | 630 | ||
| 165 | D500-57*6 | 342 | 710 | ||
| 166 | D500-57*7 | 399 | 800 | ||
| 167 | D500-57*8 | 456 | 900 | ||
| 168 | D500-57*9 | 513 | 1000 | ||
| 169 | D500-57*10 | 570 | 1120 | ||
| 170 | D550-50*2 | 550 | 100 | 250 | 1450 |
| 171 | D550-50*3 | 150 | 355 | ||
| 172 | D550-50*4 | 200 | 450 | ||
| 173 | D550-50*5 | 250 | 560 | ||
| 174 | D550-50*6 | 300 | 710 | ||
| 175 | D550-50*7 | 350 | 800 | ||
| 176 | D550-50*8 | 400 | 900 | ||
| 177 | D550-50*9 | 450 | 1000 | ||
| 178 | D580-60*2 | 580 | 120 | 355 | 1450 |
| 179 | D580-60*3 | 180 | 440 | ||
| 180 | D580-60*4 | 240 | 500 | ||
| 181 | D580-60*5 | 300 | 630 | ||
| 182 | D580-60*6 | 360 | 800 | ||
| 183 | D580-60*7 | 420 | 900 | ||
| 184 | D580-60*8 | 480 | 1000 | ||
| 185 | D580-60*9 | 540 | 1250 | ||
| 186 | D600-60*2 | 600 | 120 | 355 | 1450 |
| 187 | D600-60*3 | 180 | 440 | ||
| 188 | D600-60*4 | 240 | 560 | ||
| 189 | D600-60*5 | 300 | 630 | ||
| 190 | D600-60*6 | 360 | 800 | ||
| 191 | D600-60*7 | 420 | 900 | ||
| 192 | D600-60*8 | 480 | 1000 | ||
| 193 | D600-60*9 | 540 | 1250 | ||
| 194 | D720-60*2 | 720 | 120 | 355 | 1450 |
| 195 | D720-60*3 | 180 | 680 | ||
| 196 | D720-60*4 | 240 | 680 | ||
| 197 | D720-60*5 | 300 | 850 | ||
| 198 | D720-60*6 | 360 | 1050 | ||
| 199 | D720-60*7 | 420 | 1250 | ||
| 200 | D720-60*8 | 480 | 1400 | ||
| 201 | D720-60*9 | 540 | 1600 |
Malfunctions and methods for their elimination
| Malfunction | Reason | Elimination method |
| 1. The pump does not suck in water. The pressure gauge and vacuum gauge needles fluctuate greatly. | There is not enough water in the pump. There is air leakage in the pipeline or devices. | Add water to the pump. Tighten connections, eliminate air leaks. |
| 2. The pump does not suck in water. The vacuum gauge shows a high vacuum. | The check valve does not open or is clogged. The resistance of the suction pipe is too high. Suction lift too high. | Check and repair or replace check valve. Replace the suction pipe. Reduce suction lift. |
| 3. The pressure gauge shows pressure, but the pump does not supply water. | Pressure pipe resistance is too high. Incorrect direction of rotation. Impeller clogged. Insufficient pump speed. | Check and shorten the pipeline, check the electric motor. Remove the pipe and clean the impeller. Increase the pump shaft rotation speed. |
| 4. Flow rate is below design requirement. | Pump clogged. Severe wear on O-rings. Insufficient rotation speed. | Clean the pump and pipes. Replace the O-rings. Increase the pump shaft rotation speed. |
| 5. Pump power consumption is too high. | Tightening the stuffing box too tightly, causing the stuffing box to overheat. Impeller wear. Increase pump flow. | Loosen the stuffing box. Replace the impeller. Increase the pressure line resistance to reduce flow. |
| 6. Unusual noise inside the pump, the pump does not supply water. | Too much consumption. The resistance of the suction pipe is too high. Air leakage at the suction point. The temperature of the pumped liquid is too high. | Increase the pressure line resistance to reduce flow. Check the pump suction line. Check the check valve. Reduce suction lift. Eliminate air leaks. Reduce liquid temperature. |
| 7. Pump vibration. | The pump axis and the motor axis are not aligned, or the pump shaft is bent. | Align the pump and motor axes. |
| 8. Overheating of bearings. | Lack of lubrication. The pump axis and the motor axis are not aligned. | Add lubricant. Align the axles. Check or clean the bearing housing. |
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