Home / 8 Inch Fountain Pumps / 8SP77 Fountain Pump

8 inch borehole pump

For 8-inch borehole pump, system reliability becomes more important than individual unit performance. The 8SP77 delivers 77 m³/h for municipal water intake, industrial complexes, and agricultural hubs where downtime is costly.

Performance Parameters

Model numberMoterFlow(n≈2850r/min)Pump
length (mm)
Pump
weight (kg)
Outlet
diameter
KWHPm³/h0365060707790
8SP77-0145.5Head (m)2117.5161514131039212DN100/DN125
4″/5″
8SP77-027.5104235313028272149615.3
8SP77-0311155953474442403160018.6
8SP77-04 15207970635956534270421.9
8SP77-05  18.5259988787470675280825.7
8SP77-06 2230119105948984806391229
8SP77-07  2635139123110104989373101632.3
8SP77-08    304015914012511911210784112035.6
8SP77-09    375017915714113412612095122438.9
8SP77-10 3750198174157148140133105132842.2
8SP77-11  4560218192172163154147116143245.5
8SP77-12 4560238210188178168160126153648.8
8SP77-13  5575258228204193182173136164052.1
8SP77-14 5575277245220207196187147174455.4
8SP77-15 5575297263235222210200157184858.7
8SP77-16 6385317280251237224213168195262
8SP77-17    636385337298266252238227178205665.3
8SP77-18 75100357315281267252241188216068.6
8SP77-19    75100377332297282266253199226471.9
8SP77-20 75100397350313297280267210236875.2

Conditions of Use

ParameterValue
Water temperature≤ 35°C
pH value of water source6.5 – 8.0
Solid content (weight ratio)≤ 0.01%
Maximum particle diameter≤ 0.2 mm
Maximum diving depth≤ 150 m

Q-P and Q-H Curves

8sp77 Q-H Curve
8sp77 Q-H Curve
8sp77 Q-P and Q-η Curves
8sp77 Q-P and Q-η Curves

Life Cycle Cost (LCC)

For 8-inch pumps, energy consumption is significant.

Optimized hydraulic efficiency

The 8SP77 uses laser-welded stainless steel impellers with smooth internal flow paths. This reduces friction, converting more electricity into hydraulic work.

Energy savings

In continuous municipal applications, the 8SP77 can reduce annual energy use by up to 15% compared to standard cast-iron pumps, lowering the total cost of ownership.

Mechanical Resilience for 8-Inch Pumps

For an 8-inch borehole pump operating at high flow, two main stresses must be managed: axial thrust and harmonic vibration.

Downward thrust from high flow

Moving large volumes at high pressure creates strong downward force on the pump shaft.

Thrust compensation system

The 8SP77 includes a thrust-compensation system and heavy-duty NEMA standard 8-inch couplings. This keeps motor bearings within safe operating margins under maximum load.

Reinforced suction and discharge

A reinforced 8-inch suction interconnector stabilizes intake flow and reduces harmonic resonance, preventing premature seal failure in large boreholes.

Key Use Cases – Municipal, Farming, Industrial

A large, multi-stage grey water storage and treatment tank on a grassy area, integrated with a network of grey and blue pipes and a blue equipment cabinet, possibly connected to a high-capacity 8 inch borehole pump extraction point.

Municipal water treatment and distribution

The 8SP77 maintains consistent pressure for large treatment reservoirs in city-wide water grids.

A large-scale automated linear-move irrigation system spraying water over a field, likely powered by a powerful 8 inch borehole pump in a agricultural area.

Agricultural irrigation hubs

Powers center-pivot systems and regional irrigation networks for high-yield farming.

Mine dewatering and industrial cooling

Provides throughput for open-pit mine dewatering and cooling loops in refineries and steel mills.

8SP77 and 8SP95 – Key Specifications

Parameter8SP778SP95
Primary design goalPressure stability and energy efficiencyMaximum flow rate
Rated flow77 m³/h (1,283 L/min)95 m³/h (1,583 L/min)
Piping size5-inch (DN125)6-inch (DN150)
Best efficiency point (BEP)60 – 85 m³/h80 – 110 m³/h
Hydraulic characteristicHigher head / pressure stabilityHigh volume / rapid transfer
Core valueLow operating cost for continuous supplyHigh ROI for time-critical bulk transfer
Typical applicationsMunicipal grids, water towers, high-pressure irrigationMine dewatering, flood control, reservoir filling

Contact Us

0086 18383291703
info@hualuopumps.com
No. 399, Antai Street, Economic Development Zone, Neijiang City, Sichuan Province, China.
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