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15 bar multistage boiler feed water pump for hot water booster pump
=== OVERVIEW ===
Model QD(G) Stainless Steel Housing Material and Free standing Installation heat water pump swimming pool heater is a horizontal centrifugal boiler feed multistage pump and suitable for transporting liquid (with the contained foreign matters’ content less than l % and graininess less than 0. 1mm) and other liquids.
QD(G) model middle and low pressure boiler fuel multistage pump is applicable to transport medium with temperature of not higher than 105ºC, and is also applicable for small boiler water supply or transporting medium similar to hot water.
QD(G) model hypo high pressure boiler multistage pump is used to transport medium with temperature of not higher than 160ºC, and is also applicable for small boiler water supply or transporting medium similar to hot water
| Flow rate | 3.75-1100m3/h |
| Head | 70-2300m |
| Driven type | Motor or Diesel engine |
| No of stage | 3-12 |
| Motor power | 4.0-8000 kw |
| Speed | 680-5255rpm |
| Sealing type | Packing/Mechnical |
| Medium temperature | 160°C max |
=== APPLICATION ===
Type QD(G) high pressure Stainless Steel Housing Material and Free standing Installation multistage pump swimming pool heater are used for feeding high pressure boiler or pumping high pressure fuel.
The temperature of pumped media is not more than 160ºC.
1)Municipal engineering,Wastewater treatment, constructional engineering
2)Agricultural irrigation, transfer water etc.
3)High-rise buildings water supply and drainage, and for fire working
4)Factory and mining for distance water supply and drainage
5)Circulation water supply for production process
6)Cooling systems of air-conditioning in hotels
7)Domestic water supply
=== OPERATING TIPS ===
The boiler feed multistage pump is allowed to run within the set parameter range only.
The multistage pump is not allowed to run with the spitting valve closed or closed to a little opening, or it will be caused heated and duration lowered. Each multistage pump is required to run under the special parameters so as to guarantee the flow of it if mounted in a parallel system.
The multistage pump can not run with the suck-in valve closed, or it may be dried moving to cause parts damaged.
The medium the pump transports can not contain air or gas, or both flow and head of the pump may not be accurately measured and, meanwhile, grinding maybe produced to damage parts.
This multistage pump is not allowed to transport any material with grains, or both pump efficacy and part duration may be lowered.
To keep the boiler feed multistage pump in a high effective and stable work, it must be often repaired, the items of repair and the interval between every repair depend on the working condition and running state of it.
=== DRIVER ===
EPT motor
The boiler feed multistage pump is driven by the motor through the coupling The gear, membrane coupling and hydraulic coupling can be used according to client’s requirements. The pump can be driven by turbine or motor.The rotating direction of pumps are clockwise when viewed from the driving end.
=== CONSTRUCTION DRAWING ===
=== CURVE CHART ===
=== PERFORMANCE LIST ===
| Pump Type | Flow (m3/h) |
Head (m) |
Power (KW) |
Speed (r/min) |
| QDG 6-25 | 3.75-7.5 | 73.5-306 | 4-11 | 2950 |
| QDG 12-25 | 7.5-15 | 69-338.4 | 5.5-22 | 2950 |
| QDG 12-50 | 7.5-15 | 139.5-648 | 18.5-75 | 2950 |
| QDG 25-30 | 15-30 | 82.5-340 | 15-45 | 2950 |
| QDG 25-50 | 15-30 | 15.78-618 | 22-110 | 2950 |
| QDG 46-30 | 30-55 | 81-340 | 22-75 | 2950 |
| QDG 46-50 | 30-55 | 138-666 | 37-132 | 2950 |
| QDG 85-45 | 55-100 | 78-459 | 37-160 | 2950 |
| QDG 85-67 | 55-100 | 183-666 | 90-250 | 2950 |
| QDG155-67 | 100-185 | 177-684 | 132-400 | 2950 |
| QDG280-43 | 185-335 | 114-423 | 160-450 | 1480 |
| QDG280-65 | 185-355 | 372-680 | 500-800 | 1480 |
| QDG450-60 | 335-500 | 171-650 | 360-1050 | 680 |
| Type | Flow (m3/h) |
Head (m) |
Speed (r/min) |
Eff (%) |
NPSH | (kw) |
| 1QD(g)-8 | 120-170 | 967-1040 | 2980 | 68-71 | 4.5 | 710 |
| 1QD(G)-9 | 120-170 | 1088-1170 | 2980 | 68-71 | 4.5 | 800 |
| 1QD(G)-10 | 120-170 | 1208-1300 | 2980 | 68-71 | 4.5 | 800 |
| 1QD(G)-11 | 120-170 | 1330-1430 | 2980 | 68-71 | 4.5 | 1000 |
| 1QD(G)-12 | 120-170 | 1450-1560 | 2980 | 68-71 | 4.5 | 1000 |
| 2QD(G)-8 | 200-280 | 1184-1344 | 2980 | 74-75 | 5 | 1400 |
| 2QD(G)-9 | 200-280 | 1330-1512 | 2980 | 74-75 | 5 | 1600 |
| 2QD(G)-10 | 200-280 | 1480-1680 | 2980 | 74-75 | 5 | 1600 |
| 3QD(g)-10 | 360-496 | 1470-1660 | 2985 | 80.1-82.4 | 8 | 2500 |
| 4QD(G)-8C | 500-600 | 1580-1670 | 2985 | 77-80 | 10 | 3400 |
| 5QD(G)-10 | 500-620 | 2100-2210 | 2987 | 80-82 | 10 | 4800 |
| QD(G)270-140B | 270-440 | 1422-1570 | 2985 | 74-78 | 5 | 2300 |
| QD(G)270-140C | 270-440 | 1460-1750 | 2985 | 75.5-79 | 5 | 2300 |
| QD(G)400-180B | 245-415 | 1800-1940 | 4640 | 80-82 | 12 | 3200 |
| QD(G)400-180C | 400-500 | 1815-1975 | 2985 | 77-79 | 12 | 4000 |
| QD(G)450-180 | 400-500 | 1700-1920 | 4640 | 75-79 | 23.5 | 3200 |
| QD(G)500-140 | 450-550 | 1400-1540 | 4640 | 75-79 | 23.5 | 3200 |
| QD(G)600-230 | 540-650 | 2260-2500 | 5410 | 82-86 | 23.5 | 4800 |
| QD(G)700-170 | 600-740 | 1640-1810 | 5000 | 80-84 | 23.5 | 4500 |
| QD(G)1000-220 | 900-1100 | 2100-2320 | 5255 | 82-86 | 23.5 | 8000 |
=== MORE RELATED PRODUCTS ===
=== FAQ ===
A. The completed supply of EPT multistage pump group includes:
1 Water supply pump, pre-pump and its inlet filtering screen
2 Motor
3 Hydraulic coupler and oil cooler for both working and lubricating oils
4 Check valve at the outlet of the water pump
5 Minimum flow device : includes recycling valve, stop valve and flow measurer
6 Clutch and other accessories
7 Oil thin station
8 Of which the motor, recycling valve, hydraulic coupler, oil thinning station, check valve,pre-pump, stop valve and flow measurer can also be purchased by clients and this Co.will be in charge of technical coordination.
B. Please provide the following parameters when to order the product of this Co.:
1. Flows at the outlet of the water pump and the tap (boosting class)
2. Pressures(or the water pump group’s head) at the outlet of the water pump and the inlet of the pre-pump
3. Water supply temperature
4. Pump group’s type(steam-powered or EPT pump)
5. The installation dimensions are to be provide at order upon the contract requirement
=== PACKAGING & SHIPPING ===
>>>Company Introduction
HangZhou EPT Machinery Co., Ltd is one over 30 years experienced pump manufacturer (established at 1986) in mining and mineral, power plant, dredging and dredge, hydraulic, irrigation, pulp transfer, chemical, construction, sea water and oil & gas transfer etc.; EPT Machinery is the pump factory has its own pump selection & design, research and development team to assure provide you efficient, energy saving slurry pump, water pump, diesel water pump, chemical pump and irrigation pump in selection & design, use and maintenance program.
EPT Machinery is the pump factory approved by ISO9001, ISO14001 and OHSAS18001. We also have the certificate of CE. Our factory is over 50,000 square meters with the professional engineer over 20. The Max casting parts weight we could do one time is 7 tons. And we have capacity to produce 600 tons per month and with the heat treatment furnace dimension 6mx5.5mx2.5m. The Max parts we could machine is 6.4 meters and we have capacity to assemble the pump over 1800mm and our cranes capacity is 30 tons.
>>>FAQ
(1). Q: Are you a trading company or manufacture?
A: EPT Machinery Co., Ltd is a real large professional manufacturer more than 32 years, in China, produce with our own factory.
(2). Q: what’s your factory workshops ?
A: My factory produce include casting, mechanical process, lathe process, heat treatment, assembly, and test etc.
Warmly welcome to visit & test my factory any time.
(3). Q: How about your QI series centrifugal end scution water pump price?
A: We are sure our price is factory price, and insist hig quality for our long term cooperation.
(4). Q: What is your QI series end suction water pump material ?
A: For the QI end suction water pump, we could produce cast iron, cast steel, stainless steel, bronze, and material high CrMoNi alloy.
And we could also produce as your requirements.
(5).Q: What kind of liquid can your QI series centrifugal end suction water pump transfer?
A: Liquid range: water, chemical liquid, hot water, sewage etc.
(6). Q:How does your factory do regarding quality control?
A:”Quality is priority. we always attach great importance to quality controlling from the very beginning to the very end.
Our factory has 15~30 QC.
(7). Q: Is it easy for customers to change the parts by myselves ?
A: yes, the structure is simple ,customers can change it very easliy. We will also supply you maintenance tools for free.
(8). Q: How about your gravel pump warranty?
A: 1 year warranty for commplete setpump, 6-8 months for wet parts, it depends on other pump working condition details.
(9). Q: How to do if the pump or parts have operatation problem within your warranty?
A: Tell me details timely, and show me pictures, we will send you pump solution at once without any hesistation.
(10). Q: Can you install the EPT motor or diesel engine with the water pump for us ?
A: yes, we can, it’s no problem, we are experienced in this .
(11): Q: .we don’t know which pump model we need ,can you help us ?
A: yes, please tell me your detail requirements, include liquid, flow rate, head etc,
my engineers team wiill calculate & select most suitable pump model for you, offer pump solution for you.
(12). Q:How long can you reply us if we send an inquiry ?
A: Generall with in 2 hours, we will send you official quotation sheet, with price, EPT data, performance curve, dimension etc.
(13). Q: What are your advantages,why should I choose you?
A: Higher Quality, our parts have 30% longer life than the originals
Short Delivery Time, for normal parts,we have stock in our warehouse
Competitive Price, we can help you cut down the cost by 30% or more
Best Services, we have technical department, quality control department and a professional sales team, we will offer professional service for you any time.
=== CONTACT US ===
Andy Ma
HangZhou EPT MACHINERY CO.,LTD.
Tel: +86~571-8822571/88220973 89940549 | Fax: 0086-571-88220971:+86~571-8822571/88220973 86271170 | Mob:+86-17732155715
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The use of original equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the listed EPT parts contained herein are not sponsored, approved, or manufactured by the OEM.
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