GC Series Multistage Boiler Feed Water Pump
A horizontal single-suction multistage sectional pump for boiler feed and clear water duty, with capacity from 6 to 55 m³/h, heads of 46-570 m and power from 3 to 110 kW.
The GC series is a horizontal, single-suction, multistage sectional centrifugal pump for clear water below 110°C and for other non-corrosive liquids with properties similar to water. Published coverage is 6-55 m³/h at heads of 46-570 m with motor ratings of 3-110 kW, which places it in small boiler feed, hot water circulation, pressure vessel supply and high-rise building supply. Head is produced by stacking stages, so the same sectional design covers a wide pressure range from a compact casing. The shaft seal is soft packing, which keeps the structure simple and makes maintenance quick and safe. The pump runs smoothly with low pulsation and low noise, and the supplier also lists it for garden irrigation, fire boosting, food, brewing, medicine and chemical service.
| Parameter | Specification |
| Capacity | 6-55 m³/h |
| Head | 46-570 m |
| Motor power | 3-110 kW |
| Pump type | Horizontal, single-suction, multistage sectional |
| Liquid temperature | Below 110°C for clear water |
| Shaft seal | Soft packing seal |
| Media | Clear water and non-corrosive liquids with properties similar to water |
| Running characteristics | Smooth operation, stable delivery, small pulsation |
| Typical duty | Small boiler feed water and hot water circulation |
The table lists the published GC models with their rated capacity, head and motor power. Model numbers carry the stage count after the asterisk, so 5GC-8*3 is a three-stage build of the 5GC-8 casing.
| Model | Capacity (m³/h) | Head (m) | Power (kW) |
| 1.5GC-5*2 | 6 | 46 | 3 |
| 1.5GC-5*3 | 6 | 69 | 4 |
| 1.5GC-5*4 | 6 | 92 | 5.5 |
| 2GC-5*2 | 10 | 64 | 7.5 |
| 2GC-5*3 | 10 | 96 | 11 |
| 2GC-5*4 | 10 | 128 | 15 |
| 2.5GC-6*2 | 15 | 62 | 7.5 |
| 2.5GC-6*3 | 15 | 93 | 11 |
| 2.5GC-6*4 | 15 | 124 | 15 |
| 4GC-8*2 | 30 | 86 | 22 |
| 4GC-8*3 | 30 | 129 | 30 |
| 4GC-8*4 | 30 | 172 | 45 |
| 5GC-8*2 | 72 | 138 | 55 |
| 5GC-8*2A | 72 | 122 | 55 |
| 5GC-8*2B | 72 | 117 | 45 |
| Item | Detail |
| Shaft seal | Soft packing seal, simple to maintain and quick to renew |
| Casing | Horizontal sectional multistage body with single suction |
| Hydraulic design | Advanced hydraulic model giving high efficiency over a wide performance range |
| Rotor | Multistage rotor carried in the sectional casing |
| Drive | Coupled electric motor |
| Media limits | Clear water below 110°C and non-corrosive liquids similar to water |
- Small boiler feed: The primary duty - feeding water to small industrial and heating boilers.
- Hot water circulation: Circulates hot water in heating and process loops.
- Pressure vessel supply: Feeds water into pressure vessels and closed circuits.
- High-rise building supply: Boosts water to elevated tanks and tall buildings.
- Farmland irrigation and fire boosting: Raises water for irrigation and fire main pressure.
- Process industries: Serves food, brewing, medicine, chemical, aquaculture and environmental plant.
- Read the model number as casing plus stage count, because the stage count sets the head for a given capacity.
- Confirm the water is clear and below 110°C; the series is not intended for solids or corrosive media.
- Compare the published motor power with the duty point, since the table lists one rating for each stage build.
- Plan for packing maintenance, because a soft packing seal needs periodic adjustment and renewal.
- Check the NPSH available at the suction, particularly where hot water is being fed to a boiler.
How do I pick a GC model for boiler feed duty?
Match the boiler feed rate to the capacity column, then choose the stage count that delivers the required boiler pressure. For example 1.5GC-5*2 gives 6 m³/h at 46 m, while 1.5GC-5*4 gives the same flow at 92 m.
What is the maximum head of the GC series?
The published range runs to 570 m, with capacity from 6 to 55 m³/h and motor power from 3 kW to 110 kW.
Which shaft seal does the GC pump use?
A soft packing seal. It is safe and reliable, structurally simple and quick to maintain compared with more complex seal arrangements.
What is the GC series pump used for?
Small boiler feed water is the main duty, together with hot water circulation, pressure vessel supply, high-rise building supply, irrigation, fire boosting and process water in food, brewing, medicine and chemical plants.
What capacity and head does the GC series cover?
Capacity from 6 to 55 m³/h and heads of 46-570 m, with motor power from 3 kW to 110 kW.
What temperature can the GC pump handle?
Clear water below 110°C and other non-corrosive liquids with physical and chemical properties similar to water.
Which seal does the GC pump use?
A soft packing shaft seal, which the supplier states is safe, reliable, simple and quick to maintain.
How do I quote a GC pump?
Send the feed rate, boiler or system pressure in metres of head, water temperature, available NPSH, voltage and frequency.
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How to Choose the Right GC Series Multistage Boiler Feed Water Pump
Quick answer: The GC Series Multistage Boiler Feed Water Pump covers capacity 6-55 m³/h, heads of 46-570 m, motor power 3-110 kW. Selection starts from the duty point - flow, head, liquid properties and available NPSH - rather than from the catalogue maxima.
Industry Applications
Explore how this equipment can be applied in related industrial sectors and review application-specific selection guidance.