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Sanitary screw pumps type GF
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Single Stage Double Entry Centrifugal Pumps Type S
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Metal pneumatic diaphragm pumps QBK
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Non-clogging self-priming wastewater pumps ZW
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FY Submersible Chemical Pumps
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YZZW Diesel self-priming pumps
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Horizontal chemical centrifugal pumps types IS and IR
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Horizontal multistage centrifugal pumps type D
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Diesel pumps with horizontal connector YZS and YZSH
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QW Non-clogging Submersible Sewage Pumps
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IH Stainless Steel Chemical Centrifugal Pumps
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Gear oil pumps type KCB
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YCZ Chemical Process Pumps
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YZIS Diesel Single Stage Centrifugal Pumps
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Mechanical diaphragm dosing pumps DJ-Z
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YW Vertical Submersible Sewage Pumps
Horizontal multistage pumps for feeding DC boilers
The GC series of multi-stage boiler feed pumps are horizontal, single-stage suction, multi-stage sectional centrifugal pumps designed and optimized using computer technology. They have high efficiency, a wide range of performance characteristics, safe and stable operation, low noise, long service life, ease of installation and maintenance.
Description
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Product Description
The GC series of multi-stage boiler feed pumps are horizontal, single-stage suction, multi-stage sectional centrifugal pumps designed and optimized using computer technology. They have high efficiency, a wide range of performance characteristics, safe and stable operation, low noise, long service life, ease of installation and maintenance. Designed for pumping clean water with temperatures below 104°C or other non-corrosive liquids whose physico-chemical properties are similar to water.
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
| Model | Number of steps | Flow (m³/h) | Head (m) | Speed (rpm) | Efficiency (%) | Power (kW) | |
| Shaft power | Engine power | ||||||
| 1.5GC-5 | 2 | 6 | 46 | 2900 | 38 | 2 | 3 |
| 3 | 69 | 2900 | 38 | 3 | 4 | ||
| 4 | 92 | 2900 | 38 | 4 | 5.5 | ||
| 5 | 115 | 2900 | 38 | 5 | 7.5 | ||
| 6 | 138 | 2900 | 38 | 6 | 7.5 | ||
| 7 | 161 | 2900 | 38 | 7 | 7.5 | ||
| 8 | 184 | 2900 | 38 | 8 | 11 | ||
| 9 | 207 | 2900 | 38 | 9 | 15 | ||
| 2GC-5 | 2 | 10 | 64 | 2900 | 39.6 | 4.4 | 7.5 |
| 3 | 96 | 2900 | 39.6 | 6.6 | 11 | ||
| 4 | 128 | 2900 | 39.6 | 8.8 | 15 | ||
| 5 | 160 | 2900 | 39.6 | 11 | 15 | ||
| 6 | 192 | 2900 | 39.6 | 13.2 | 18.5 | ||
| 7 | 224 | 2900 | 39.6 | 15.4 | 22 | ||
| 8 | 256 | 2900 | 39.6 | 17.6 | 30 | ||
| 9 | 288 | 2900 | 39.6 | 19.8 | 30 | ||
| 2.5GC-6 | 5 | 20 | 135 | 2900 | 47.4 | 15.5 | 18.5 |
| 6 | 162 | 2900 | 47.4 | 18.6 | 22 | ||
| 7 | 189 | 2900 | 47.4 | 21.7 | 30 | ||
Malfunctions and 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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