Description

The 1.5HP Dayliff Submersible Borehole Pump is a high-pressure multistage pump designed for domestic water supply, small farms, irrigation, elevated tank filling and other clean-water applications. The model matching these specifications is the Dayliff DSD 3/18, powered by a 1.1kW or 1.5HP single-phase motor.

This high-speed borehole pump reaches a maximum head of approximately 129 metres and delivers up to about 3m³/h, or 3,000 litres per hour. It is supplied with a 30-metre submersible electrical cable, and versions sold with a float switch allow automatic water-level control. Current Kenyan listings also supply the pump with its appropriate control box.

Dayliff’s official DSD documentation confirms that the DSD 3/18 uses a 1.1kW, 1.5HP motor, operates at 2850rpm, and is part of the DSD multistage borehole range designed for domestic and small-scale water supply.

Quick Specifications

Feature	Specification
Brand	Dayliff
Model	DSD 3/18
Pump Type	Submersible Multistage Borehole Pump
Motor Power	1.1kW / 1.5HP
Voltage	220–240V Single Phase
Maximum Head	Approximately 129m
Maximum Flow	Approximately 3m³/h
Maximum Water Output	3,000 litres/hour
Motor Speed	2850rpm
Outlet	1¼ Inch
Cable Length	30m
Float Switch	Included on float-switch version
Control Box	Included on current complete-set listings
Pump Housing	AISI 304 Stainless Steel
Impellers/Diffusers	Polycarbonate
Motor Protection	IP68
Insulation Class	B
Maximum Water Temperature	35°C
Maximum Immersion Depth	150m
Minimum Borehole Diameter	110mm
Maximum Sand Content	0.25%

The Dayliff manufacturer lists the DSD range for clean, chemically non-aggressive water, a maximum liquid temperature of 35°C, maximum immersion depth of 150m, and a minimum borehole diameter of 110mm.

High-Speed 2850rpm Motor

The Dayliff DSD 3/18 uses a two-pole asynchronous motor running at approximately 2850 revolutions per minute.

This high-speed motor drives several impellers inside the pump, building pressure in stages rather than relying on a single impeller.

The result is a compact 1.5HP pump capable of producing significantly higher pressure than many ordinary surface pumps of similar horsepower. Dayliff specifies a sealed, liquid-cooled two-pole motor for this DSD range.

Why High Speed Matters

High rotational speed helps the multistage pump generate the pressure required to move water from deeper boreholes.

It is particularly useful for:

• Deep borehole pumping
• Elevated tanks
• Long vertical pipe runs
• Pressurized domestic supply
• Small-scale irrigation

Speed alone does not determine pump performance. The impeller design, number of stages and system head are equally important.

Maximum Head of 129 Metres

The maximum head of approximately 129m is one of the main advantages of the Dayliff DSD 3/18.

Current Kenyan listings for this exact 1.1kW/1.5HP model specify a maximum head of 129 metres.

This high head makes it suitable for systems where water must be pumped:

• From deep boreholes
• Up steep terrain
• Into elevated tanks
• Through long rising mains
• Into pressurized storage systems

Maximum Head Is Not Borehole Depth

A 129m maximum head does not mean the pump should automatically be installed in a 129m-deep borehole.

The actual pumping requirement depends on Total Dynamic Head, which includes:

• Dynamic water level
• Vertical distance to the tank
• Tank elevation
• Pipe friction
• Fittings
• Valves
• Required outlet pressure

A borehole may be 120m deep while its pumping water level is only 70m below the surface. In that situation, pump selection should be based on the actual operating conditions rather than total drilled depth.

Maximum Flow Rate of 3m³/h

The pump delivers a maximum flow of approximately:

3m³/h

This is equal to:

3,000 litres per hour

or approximately:

50 litres per minute.

Current DSD 3/18 listings in Kenya publish this 3m³/h flow rating together with the 129m maximum head.

Estimated Water Output

At the theoretical maximum flow:

Running Time	Maximum Water Volume
1 Hour	3,000 L
2 Hours	6,000 L
4 Hours	12,000 L
6 Hours	18,000 L
8 Hours	24,000 L

Actual delivery will be lower when the pump is operating against significant head.

The 129m head and 3m³/h flow are maximum figures and should not be assumed to occur at the same operating point.

Multistage Borehole Pump Design

The DSD 3/18 is a multistage centrifugal pump.

Instead of one impeller, it uses several impellers and diffusers arranged in stages.

Each stage increases water pressure before passing the water to the next stage.

This design provides:

• High pressure from a compact pump
• Stable water delivery
• Good borehole performance
• Efficient tank filling
• Better suitability for deep installations

Dayliff specifically describes the DSD range as submersible multistage centrifugal pumps designed for boreholes and wells.

30 Metre Submersible Cable

The DSD 3/18 versions currently sold as complete packages include a 30m electrical cable.

Dayliff’s official product information confirms that DSD 3/18 units are among the models supplied complete with a 30m cable and control box.

The factory cable offers several advantages:

• Less cable jointing near the pump
• Faster installation
• Suitable insulation for submerged use
• Easier connection to the control system

If the pump is installed deeper than the supplied cable length, the cable should be extended using the correct submersible cable and a waterproof borehole joint.

Float Switch Included

The float-switch version includes a fixed float switch for automatic control.

Current Kenyan listings specifically identify the Dayliff DSD 3/18 package as including:

• Pump
• 30m cable
• Float switch
• Control box

Dayliff’s own model catalogue also lists a specific DSD3/18 with Float Switch variant.

What Does the Float Switch Do?

The float switch detects water level and can be used to automatically control the pump.

Depending on the installation, it can help:

• Stop pumping when a tank is full
• Start pumping when tank level falls
• Prevent overflow
• Reduce manual switching

The exact wiring depends on whether the float switch is controlling tank level or another part of the system.

Control Box

Single-phase Dayliff borehole pumps use a dedicated control box.

For the broader Dayliff DS range, single-phase control boxes can incorporate features such as:

• Isolator
• Run indicator
• Thermal overload protection
• Starting capacitor
• Auxiliary control terminals

Dayliff states that float switches, pressure switches or control probes can be integrated with suitable control systems.

Current DSD 3/18 complete-set listings specifically include a control box with overload protection.

220–240V Single-Phase Power

The 1.5HP DSD 3/18 is designed for single-phase 220–240V electricity.

This makes it practical for:

• Homes
• Small farms
• Schools
• Shops
• Small businesses
• Residential developments

A three-phase electrical supply is not required for this version.

AISI 304 Stainless Steel Housing

Dayliff uses AISI 304 stainless steel for the pump housing, shaft and shaft coupling in the DSD range. Benefits include:

• Good corrosion resistance
• Long service life
• Suitability for borehole environments
• Strong structural support

Polycarbonate Impellers and Diffusers

The internal pumping stages use polycarbonate impellers and diffusers.

Dayliff states that these materials help provide excellent sand-handling characteristics and longer service life.

This does not mean the pump is designed to pump heavily sandy water.

The specified maximum sand content is 0.25%.

Cast-Iron Suction and Delivery Chambers

The DSD design combines stainless steel with strong cast-iron delivery and suction chambers.

This provides a durable structure around the high-pressure pumping stages.

IP68 Motor Protection

The motor carries an IP68 enclosure rating.

This is important because the motor operates completely underwater.

Dayliff also specifies Class B insulation for the DSD range.

Maximum Immersion Depth of 150m

According to Dayliff’s official specifications, the DSD range has a maximum immersion depth of 150 metres.

This refers to how deeply the pump can be submerged below the water surface, not necessarily the maximum total borehole depth.

Minimum Borehole Diameter

Dayliff specifies a minimum borehole diameter of approximately 110mm for this range.

This means it is intended for standard borehole installations around the 4-inch class and above, subject to casing dimensions and installation clearance.

1¼-Inch Outlet

Current DSD 3/18 product specifications give an outlet size of:

1¼ inches.

The rising main should be chosen according to:

• Flow requirement
• Pump head
• Installation depth
• Pressure rating
• Pipe friction losses

Do not select pipe solely according to the threaded outlet diameter.

Best Applications

Domestic Water Supply

The pump is well suited to households requiring borehole water for:

• Bathrooms
• Kitchens
• Washing
• General household use

A storage tank is usually recommended rather than relying on frequent direct pump starting.

Tank Filling

At favourable operating conditions, the maximum 3,000L/h flow allows efficient filling of common tanks.

For example:

Tank Size	Theoretical Minimum Filling Time
1,000 L	About 20 minutes
2,000 L	About 40 minutes
5,000 L	About 1 hour 40 minutes
10,000 L	About 3 hours 20 minutes

Actual filling time will usually be longer because flow decreases as system head increases.

Small-Scale Irrigation

The pump can support suitable:

• Drip irrigation
• Greenhouses
• Kitchen gardens
• Nurseries
• Small orchards

The irrigation system should be designed around the actual pump operating point.

Livestock Watering

Useful for filling tanks and trough systems on:

• Dairy farms
• Poultry farms
• Small cattle farms
• Mixed farms

Schools and Institutions

The 1.5HP pump provides a practical balance between pressure, flow and single-phase electricity for smaller institutional water systems.

Dayliff 1.5HP vs 2HP Borehole Pump

Feature	DSD 3/18 1.5HP	Higher-Power Dayliff Model
Power	1.1kW / 1.5HP	1.5kW / 2HP
Max Head	129m	Model Dependent
Max Flow	3m³/h	Higher on some ranges
Power Supply	240V Single Phase	240V or Model Dependent
Household Use	Excellent	Excellent
Running Cost	Lower	Higher

A larger motor is not automatically better. Choose the pump according to the required head and flow.

Dayliff Borehole Pump vs Surface Pump

Feature	Dayliff Submersible Pump	Surface Pump
Installed Underwater	Yes	No
Deep Borehole Use	Excellent	Limited
Priming	Not Normally Required	Often Required
High Head	Excellent	Model Dependent
Noise at Surface	Low	Higher
Borehole Applications	Excellent	Limited

For deep boreholes, a submersible pump is usually much more suitable than a conventional surface pump.

What Comes in the Package?

The float-switch package commonly includes:

• 1 × Dayliff DSD 3/18 pump
• 30m submersible cable
• Float switch
• Control box
• Installation documentation

Current Kenyan sellers confirm these components for the complete float-switch version.

Borehole Test Report Before Installation

Before buying the pump, check your borehole test report.

Important figures include:

• Total borehole depth
• Static water level
• Dynamic water level
• Borehole yield
• Drawdown
• Recommended pumping rate
• Borehole casing size

A pump capable of 3m³/h should not be installed in a borehole that cannot sustainably produce that amount of water.

How to Calculate Whether 129m Head Is Enough

Consider an example installation with:

• Pumping water level: 75m
• Tank elevation above ground: 15m
• Pipe friction and fittings: 10m

Approximate Total Dynamic Head would be:

75m + 15m + 10m = 100m

A pump with a 129m shut-off head may potentially work, but the critical question is how much flow the pump delivers at around 100m head.

This should be checked on the Dayliff performance curve.

Float Switch vs Borehole Low-Level Protection

A tank float switch and borehole dry-run protection perform different jobs.

Tank Float Switch

Controls pumping according to storage-tank water level.

Borehole Low-Level Protection

Stops the pump if the borehole water level falls too low.

For the best protection, a system may use both.

Dayliff recommends purpose-designed control solutions for overload, dry-running and over/under-voltage protection.

Installation Tips

For reliable operation:

• Install the pump vertically.
• Keep it above the borehole bottom.
• Maintain sufficient water above the pump.
• Use pressure-rated rising main.
• Install a suitable non-return valve where required.
• Waterproof every submerged cable joint.
• Use appropriate borehole support.
• Protect the electrical supply.
• Have the float switch wired correctly.
• Follow Dayliff installation instructions.

Do Not Hang the Pump by Its Electrical Cable

The 30m electrical cable is for power transmission.

It should not be used as the structural support for the pump.

Use the appropriate rising main and support system specified by the installer.

Water Quality Requirements

Dayliff specifies the DSD range for:

• Thin water
• Clean water
• Chemically non-aggressive liquids
• Maximum sand content of 0.25%

The maximum water temperature is 35°C.

The pump is not intended for:

• Sewage
• Mud
• Sludge
• Highly abrasive water
• Corrosive chemicals

Maintenance

A borehole pump normally needs little day-to-day attention, but the complete installation should be monitored.

Check:

• Water output
• Electrical current
• Tank filling time
• Control box
• Float switch
• Pipe leakage
• Unusual electrical trips

A gradual reduction in water output can indicate:

• Falling borehole water level
• Worn impellers
• Blocked piping
• Sand problems
• Voltage problems
• Pipe leakage

Advantages of the Dayliff DSD 3/18

• Trusted Dayliff brand
• 1.5HP high-speed motor
• 2850rpm operation
• Maximum head around 129m
• Maximum flow around 3,000L/h
• 30m cable supplied
• Float-switch version available
• Control box included in current complete packages
• AISI 304 stainless steel construction
• Multistage design
• Single-phase 240V operation
• IP68 motor protection
• Suitable for domestic and small-farm use

How to Choose the Right Dayliff Borehole Pump

Before purchasing, determine:

• Required flow
• Borehole yield
• Dynamic water level
• Tank height
• Pipe length
• Pipe diameter
• Total Dynamic Head
• Electricity supply

The 1.5HP DSD 3/18 is especially suitable where the system requires moderate flow but relatively high pressure.

Dayliff 1.5HP Submersible Pump Price in Kenya

Current Kenyan prices differ depending on whether the package includes the float switch and other accessories.

One current seller lists the basic DSD 3/18 with 30m cable and control box at KSh 29,700, while the version with 30m cable and float switch is listed at KSh 33,800. Another current retailer lists the pump at KSh 28,999.

Package	Current Kenya Price
DSD 3/18 with 30m Cable	Around KSh 28,999–29,700
DSD 3/18 with 30m Cable + Float Switch	Around KSh 33,800
Other Retail Listings	Up to around KSh 39,999

Prices can change depending on supplier, promotion, warranty and package contents.

Why Buy a 1.5HP Dayliff Submersible Borehole Pump?

The 1.5HP Dayliff Submersible Borehole Pump in Kenya is a strong option for buyers who need high pressure without moving to a much larger motor.

The DSD 3/18 combines a 1.1kW high-speed motor, approximately 129m maximum head, 3m³/h maximum flow, 30m cable and optional/included float switch package in a compact multistage borehole design.

Its 240V single-phase power supply makes it suitable for many homes and farms, while Dayliff’s AISI 304 stainless steel construction and IP68 motor design provide durability for long-term submerged operation.

Frequently Asked Questions

What model is the 1.5HP Dayliff borehole pump?

The specifications match the Dayliff DSD 3/18, rated at 1.1kW or 1.5HP.

What is the maximum head?

The maximum head is approximately 129 metres.

What is the maximum flow rate?

It delivers up to approximately 3m³/h or 3,000 litres per hour.

Is it a high-speed pump?

Yes. Dayliff specifies a motor speed of 2850rpm for the DSD range.

How long is the cable?

The pump is supplied with a 30-metre submersible electrical cable.

Does it come with a float switch?

Yes, a DSD 3/18 float-switch version is available, and current Kenyan complete-set listings include a fixed float switch.

Does it come with a control box?

Current complete-set listings include a control box with overload protection, and Dayliff specifies purpose-designed control boxes for its single-phase DSD pumps.

What voltage does it use?

The 1.5HP version operates on approximately 220–240V single-phase power.

What is the outlet size?

The DSD 3/18 has a 1¼-inch discharge outlet according to current specifications.

What borehole size does it require?

Dayliff specifies a minimum borehole diameter of approximately 110mm for this range.

Can it handle sandy water?

It is designed for clean water and allows a maximum sand content of approximately 0.25%. It is not a sand or slurry pump.

What is the maximum immersion depth?

Dayliff specifies a maximum immersion depth of 150m for the DSD range.

What is the price of the Dayliff 1.5HP borehole pump in Kenya?

Current listings place the standard DSD 3/18 around KSh 28,999–29,700, while a package including the 30m cable and float switch is currently around KSh 33,800.