Design exampleA website design example with a fictional brand · company, models, figures and contacts are fictional
Vertical multistage pumps for water supply, cooling and process water · since 2004
Vertical multistage pumps, made and tested in Korea
From booster sets in high-rise buildings to cooling loops and washing lines. We machine the shafts and impellers, assemble each pump and run it on our test bench before it ships with its own test certificate in English.
HAESOL PUMP started in 2004 as a pump repair and assembly shop in Suwon. Since moving to Hwaseong in 2015 we have made only one product line, the HV series of vertical multistage pumps. Fourteen of our 32 staff work in machining, assembly and testing. Fictional company data
Machining and assembly in-houseShafts and impellers are machined, stacked and tested in our Hwaseong factory. Castings, motors and seals are bought in, and we say so.
Every pump is run before it shipsEach pump gets a performance and hydrostatic test, and the results go with it as a test certificate.
Spare parts for 7 years after a model endsSeals, impellers and bearings stay available for seven years after a model is discontinued. The serial number on the nameplate finds the right part.
Assembly hall, Hwaseong factory · example image
HV series 6 sizes, 18 standard models
Sizes are set by rated flow, and each size comes with three stage counts to cover the head. Pumps of the same size share the body and pipe connections, so you can change the stage count without changing the pipework.
From the smallest to the largest model · example image
Suction and discharge sit in line, so the pump drops straight into the pipe run and takes little floor space. Most of our pumps go into building plant rooms and factory utilities.
Building water boosting
Booster sets for apartments and offices. Head and flow come from building height and peak demand.
Chilled and hot water loops
Cooling tower and boiler secondary circuits. Liquid temperature −15 to 120 °C.
Boiler feed
From the feed tank to the boiler. With hot water we check suction conditions (NPSH) separately.
Process water and washing
Factory washing lines and membrane filtration feed. Wetted parts in AISI 304, or 316L where needed.
Not forfire fighting (needs separately approved pumps), flammable liquids, sewage with solids, or direct transfer of food ingredients. If you are not sure, put the liquid and its temperature in your enquiry.
All photos are example images.
Machined, assembled, run, then shipped
Every pump runs on the factory test bench before it leaves, and the results go with it as a test certificate. Witness tests can be booked one week ahead, in person or by live video.
1Machining
Impellers and shafts are CNC machined. Impeller diameter and shaft runout are measured on every part.
2Assembly
Impellers and diffusers are stacked stage by stage, the shaft height is set and the cartridge seal goes in.
3Testing
Flow, head and current are measured on the bench, and the pump is pressure-tested at 1.5 times its maximum working pressure.
All photos are example images.
Test
Scope
Criteria
Performance (flow, head, current)
Every pump
3 points including the rated point, issued as a test certificate
Hydrostatic
Every pump
1.5 × maximum working pressure for 3 minutes, no leakage
Vibration and noise
Every pump
Measured values stated on the certificate
NPSH
Type test per model
For new models and design changes
Certificates Fictional example · not real certificates
Quality management
ISO 9001 · the real site lists the certification body and expiry date here
Market approvals
Drinking-water approvals, CE marking and similar are confirmed per model and destination at the quotation stage
Motors
Motors are bought in from Korean motor makers. The efficiency class is the one on the motor nameplate, and the motor test report is sent on request.
Check it yourself before you ask for a quote
Engineering tools for consultants, contractors and plant engineers. Open up the pump to follow the water and the seal replacement, or pick a model for your flow and head, at 50 or 60 Hz, in metric or US units. For preliminary selection only; our engineer confirms the final selection against your system.
How water goes in and out, and the order in which you open the pump to change the seal. The drawing is redrawn from the stage count, pipe size and motor size of the model you pick.
Cross-section of a vertical multistage pump. The front quarter is cut away to show impellers and diffusers stacked stage by stage inside the outer sleeve.
Key point: each stage adds a fixed amount of head, so stacking stages adds head. Steps and tools are in chapter 7 of the IOM manual.
How we chose the pump for three sites
Instead of site names and savings claims, we show which conditions led to which model, and why. Fictional cases for this design example · not real sites
Apartment complex booster set
25 floors · 1,100 units · duty/standby
Duty
32 m³/h · 85 m
Selected
3 × HV 32-6 (2 duty, 1 standby), VFD
Night demand drops below a third of the daytime peak, so we chose VFD operation that slows the pumps down. The standby pump keeps water flowing during maintenance.
Office tower cooling loop
Closed loop · rooftop cooling tower
Duty
60 m³/h · 25 m
Selected
2 × HV 64-2 (1 standby), VFD
The single-stage model falls short of head at 60 m³/h, so we went to two stages and trimmed the surplus head with speed. In a closed loop the required head drops together with the flow.
Food plant washing line
Wash water 60 °C · with detergent
Duty
8 m³/h · 45 m
Selected
HV 8-5 / L (AISI 316L), fixed speed
Because of the detergent, wetted parts were changed to 316L. The line always runs at the same flow, so a model close to its rated point runs at fixed speed.
Put these conditions into the model finder at 60 Hz and the same models come up. Photos are example images.
Specifications and performance data
The model finder and the cross-section read these numbers directly. The full performance data is available as a CSV file.
Fictional data · for calculation practice HV series, 18 standard models · test conditions: clean water 20 °C, 60 Hz, 3,500 rpm. At 50 Hz (2,900 rpm) flow is about ×0.83, head ×0.69 and shaft power ×0.57.
HV series data table, 18 standard models
Model
Stages
Rated flowm³/h
Rated headm
Shut-off headm
Best efficiency%
Shaft power at rated pointkW
MotorkW
Connection
NPSHrm
HV 2-4
4
2
24
31
50
0.26
0.37
25A
1.5
HV 2-8
8
2
48
62
50
0.52
0.75
25A
1.5
HV 2-14
14
2
84
108.5
50
0.92
1.1
25A
1.5
HV 4-3
3
4
22.5
29
58
0.42
0.55
32A
1.8
HV 4-6
6
4
45
58
58
0.85
1.1
32A
1.8
HV 4-12
12
4
90
116
58
1.69
2.2
32A
1.8
HV 8-2
2
8
20
25.6
65
0.67
1.1
40A
2.2
HV 8-5
5
8
50
64
65
1.68
2.2
40A
2.2
HV 8-10
10
8
100
128
65
3.35
5.5
40A
2.2
HV 16-2
2
16
27.5
35
70
1.71
2.2
50A
2.8
HV 16-4
4
16
55
70
70
3.43
5.5
50A
2.8
HV 16-8
8
16
110
140
70
6.85
11
50A
2.8
HV 32-1
1
32
16.7
21.3
74
1.97
3.7
65A
3.5
HV 32-3
3
32
50
64
74
5.89
7.5
65A
3.5
HV 32-6
6
32
100
128
74
11.78
15
65A
3.5
HV 64-1
1
64
22.5
29
76
5.16
7.5
100A
4.5
HV 64-2
2
64
45
58
76
10.33
15
100A
4.5
HV 64-4
4
64
90
116
76
20.65
30
100A
4.5
Performance data 0, 50, 75, 100 and 120% of rated flow
Each cell: flow (m³/h), then head · efficiency · shaft power. Curve H = H₀ − (H₀ − H rated)(Q/Q rated)², efficiency η = η best × (2r − r²), r = Q/Q rated. 1 m³/h = 4.403 US gpm, 1 m = 3.281 ft.
Performance data by model
Model
0%
50%
75%
Rated
120%
HV 2-4
031 m · —
129.3 m · 37.5% · 0.21 kW
1.527.1 m · 46.9% · 0.24 kW
224 m · 50% · 0.26 kW
2.420.9 m · 48% · 0.29 kW
HV 2-8
062 m · —
158.5 m · 37.5% · 0.43 kW
1.554.1 m · 46.9% · 0.47 kW
248 m · 50% · 0.52 kW
2.441.8 m · 48% · 0.57 kW
HV 2-14
0108.5 m · —
1102.4 m · 37.5% · 0.74 kW
1.594.7 m · 46.9% · 0.83 kW
284 m · 50% · 0.92 kW
2.473.2 m · 48% · 1.00 kW
HV 4-3
029 m · —
227.4 m · 43.5% · 0.34 kW
325.3 m · 54.4% · 0.38 kW
422.5 m · 58% · 0.42 kW
4.819.6 m · 55.7% · 0.46 kW
HV 4-6
058 m · —
254.8 m · 43.5% · 0.69 kW
350.7 m · 54.4% · 0.76 kW
445 m · 58% · 0.85 kW
4.839.3 m · 55.7% · 0.92 kW
HV 4-12
0116 m · —
2109.5 m · 43.5% · 1.37 kW
3101.4 m · 54.4% · 1.52 kW
490 m · 58% · 1.69 kW
4.878.6 m · 55.7% · 1.85 kW
HV 8-2
025.6 m · —
424.2 m · 48.8% · 0.54 kW
622.4 m · 60.9% · 0.60 kW
820 m · 65% · 0.67 kW
9.617.5 m · 62.4% · 0.74 kW
HV 8-5
064 m · —
460.5 m · 48.8% · 1.35 kW
656.1 m · 60.9% · 1.51 kW
850 m · 65% · 1.68 kW
9.643.8 m · 62.4% · 1.84 kW
HV 8-10
0128 m · —
4121 m · 48.8% · 2.71 kW
6112.3 m · 60.9% · 3.01 kW
8100 m · 65% · 3.35 kW
9.687.7 m · 62.4% · 3.68 kW
HV 16-2
035 m · —
833.1 m · 52.5% · 1.38 kW
1230.8 m · 65.6% · 1.53 kW
1627.5 m · 70% · 1.71 kW
19.224.2 m · 67.2% · 1.88 kW
HV 16-4
070 m · —
866.3 m · 52.5% · 2.75 kW
1261.6 m · 65.6% · 3.07 kW
1655 m · 70% · 3.43 kW
19.248.4 m · 67.2% · 3.77 kW
HV 16-8
0140 m · —
8132.5 m · 52.5% · 5.50 kW
12123.1 m · 65.6% · 6.14 kW
16110 m · 70% · 6.85 kW
19.296.8 m · 67.2% · 7.54 kW
HV 32-1
021.3 m · —
1620.1 m · 55.5% · 1.58 kW
2418.7 m · 69.4% · 1.76 kW
3216.7 m · 74% · 1.97 kW
38.414.7 m · 71% · 2.16 kW
HV 32-3
064 m · —
1660.5 m · 55.5% · 4.75 kW
2456.1 m · 69.4% · 5.29 kW
3250 m · 74% · 5.89 kW
38.443.8 m · 71% · 6.46 kW
HV 32-6
0128 m · —
16121 m · 55.5% · 9.51 kW
24112.3 m · 69.4% · 10.58 kW
32100 m · 74% · 11.78 kW
38.487.7 m · 71% · 12.92 kW
HV 64-1
029 m · —
3227.4 m · 57% · 4.19 kW
4825.3 m · 71.3% · 4.65 kW
6422.5 m · 76% · 5.16 kW
76.819.6 m · 73% · 5.63 kW
HV 64-2
058 m · —
3254.8 m · 57% · 8.38 kW
4850.7 m · 71.3% · 9.31 kW
6445 m · 76% · 10.33 kW
76.839.3 m · 73% · 11.27 kW
HV 64-4
0116 m · —
32109.5 m · 57% · 16.75 kW
48101.4 m · 71.3% · 18.61 kW
6490 m · 76% · 20.65 kW
76.878.6 m · 73% · 22.53 kW
Reading the model code
HV16-4/ S
HV
Vertical multistage series
16
Rated flow 16 m³/h
-4
4 stages (4 impellers)
/ S · L
Wetted parts: S = AISI 304, L = AISI 316L
Operating limits Fictional
Liquid temperature
−15 to 120 °C
Max. working pressure
16 bar (suction pressure plus shut-off head)
Ambient
40 °C or below
Installation
Vertical only
Power supply
3-phase 380–415 V 50 Hz or 380–460 V 60 Hz; other voltages on request
Materials of wetted parts
Part
S version
L version
Impellers, diffusers
AISI 304
AISI 316L
Outer sleeve
AISI 304
AISI 316L
Shaft
AISI 431
AISI 316
Base, pump head
Cast iron EN-GJL-250 (painted)
Cast stainless 316
Mechanical seal
Carbon / SiC · EPDM
SiC / SiC · FKM
Downloads
Drawings are sent to your company email address. The CSV of the performance data is generated right here from the table on this page.
This is an example page, so there are no PDF or drawing files. The request buttons lead to the quotation form.
Export, shipping and documents
What you can expect when you order from outside Korea. Ask for anything not listed here and our export team will answer in English. Fictional terms for this design example
Delivery terms
EXW Hwaseong factory
FOB Busan or Incheon
CFR / CIF your port, on request
Sea freight for most orders, air freight for spare parts and urgent units
Packing
Wooden crate in ISPM 15 heat-treated timber
Pump bolted to the crate base, flanges blanked
Crate marked with model, serial number and gross weight
Crate dimensions and weight stated in the quotation
Documents per shipment
Commercial invoice and packing list
Bill of lading or air waybill
Certificate of origin (preferential origin checked per shipment)
Test certificate for every pump, in English
IOM manual in English
Electrical
3-phase motors for 380–415 V 50 Hz or 380–460 V 60 Hz. Single-phase up to 1.1 kW on request. Tell us your supply and we quote the matching motor; the efficiency class is the one on its nameplate.
Payment
T/T with 30% advance and 70% before shipment, or an irrevocable L/C at sight. Quotations are in USD unless you ask for another currency, and are valid for 30 days.
Customs
Vertical multistage centrifugal pumps are usually classified under HS 8413.70. Your customs broker confirms the final code for your country.
Distributors wantedWe are looking for distributors who can hold stock and service pumps locally, especially in the Middle East, Southeast Asia and Central Asia. Choose "Distributor enquiry" in the form below.
Lead time, warranty, service and quotation
Standard models are kept in stock. Changing stages, motor or material makes it an assembled model, and anything that needs drawing approval is a custom build. Lead times below are ex-works; FOB Busan adds about one week for export packing and documents.
Type
Lead time (ex-works)
Covers
Stock model
Ships in 3 business days
18 standard models, S material, 60 Hz motor
Assembled model
2 weeks
Different stages, 50 Hz or other motors, L material
Custom build
4–6 weeks after drawing approval
Special materials or connections, project documents
Warranty
12 months from installation or 18 months from shipment, whichever ends first. Not covered: operation outside the allowed range (including dry running), liquids not agreed in the order, and normal wear of seals and O-rings.
Service abroad
Our distributors service pumps where we have one. Elsewhere we troubleshoot with you by video call in English and send parts by air courier. A recommended spare parts list comes with every order.
Spare parts
Seals, impellers and bearings remain available for seven years after a model is discontinued. Send us the serial number from the nameplate and we find the right part.
Why prices are not on this page
The price of the same model changes a lot with material, motor, documents, quantity and delivery terms, so we quote in writing once we have your conditions.
What affects the price
Wetted parts material (S or L)
Motor (supply, efficiency class, explosion protection)
Quantity
Witness testing beyond the test certificate
Delivery terms (EXW, FOB or CIF) and lead time
What makes the quotation faster
Application, liquid and temperature
Flow and head (or building height and peak demand)
Power supply (for example 400 V 3-phase 50 Hz)
Quantity, required date and destination port
For a replacement, a photo of the old pump's nameplate
Company
Machining, assembly and testing happen in our Hwaseong factory. Castings, motors and seals come from specialist suppliers. Here is exactly what we do ourselves.
A pump runs for a long time once it is installed. So we show you the numbers you need before you choose, and after you choose, we make sure the parts never run out.
2004Founded in Suwon as a pump repair and assembly shop
2009First model of the HV vertical multistage series
2015Moved to the Hwaseong factory, performance test bench installed
2021Added AISI 316L wetted parts (L version)
2026English catalogue and English test certificates
About 1 h 20 min by car from Incheon International Airport; we pick up visitors at Seodongtan station (fictional)
Visits
Factory visits and witness tests by appointment, Mon–Fri 09:00–16:00 KST. Live video witness tests are also possible.
Freight
Loading bay to the left of the main gate
Frequently asked questions
What buyers and engineers abroad ask us most before they request a quotation.
Can you supply pumps for 50 Hz?
Yes. The data table is at 60 Hz (3,500 rpm). At 50 Hz the pump turns at about 2,900 rpm, so flow drops to about 83%, head to about 69% and shaft power to about 57%. Select 50 Hz in the model finder to see the converted curves, and we quote a 50 Hz motor as an assembled model.
Is there a minimum order quantity?
No, standard models can be ordered one at a time. For distributor orders and projects we quote quantity prices.
Which documents come with the shipment?
Commercial invoice, packing list, bill of lading or air waybill, certificate of origin, an English test certificate for every pump and the English IOM manual. Tell us early if your project needs other documents, such as material certificates.
Can we witness the performance test?
Yes, in person at the factory or by live video. Book one week ahead and we run the pump at the points you choose.
Why can the model finder differ from the real power use?
It uses the performance data at test conditions (clean water 20 °C, rated speed) and a simple system curve. In reality pipe losses, valve position, liquid temperature and motor efficiency change the result. Our engineer recalculates against your system before the final selection.
Can you replace a pump from another brand?
Send us a photo of the old pump's nameplate and the pipe size. We find a model that works at the same duty point, and if the connection height differs we give you the adapter dimensions.
How do we get spare parts quickly?
Order the recommended spare parts list with the pumps, and keep seal kits on site. Other parts are shipped by air courier.
Do your pumps have drinking-water approval or CE marking?
Requirements depend on the country and application, so we confirm them per model and destination at the quotation stage. Tell us where the pump will be installed and what it will pump.
Request a quotation
Flow and head are enough to start. Our export team replies within 2 business days (KST) with a written quotation or follow-up questions, in English.
