Davey's Prime Jet 240 Deep Well Pump
Key features:
- Standard automatic pressure system type.
- Suitable bores or deep wells up to 50m.
– Convertible to either shallow or deep well options through the use of injector kits. - 24 months warranty for pump & motor.
- Fixed pressure setting on every usage.
- Easy installation, no setting required.
- Cast iron casing (and also cast bronze impeller) ensures longevity against abrasion from vermin, dust, and water.
Classified As:
Overview of Davey's Prime Jet 240 Deep Well Pump
The Davey’s Prime Jet 240 Deep Well Pump is a single-stage convertible jet-assisted centrifugal pump designed for both shallow and deep well applications. It is ideal for supplying high-pressure water for construction, plumbing, irrigation, and residential water pump systems, including tank filling, stock watering, sprinkler supply, and general farm use. With a solid cast iron casing and a cast bronze impeller, the pump is engineered for long service life in demanding environments such as groundwater extraction, borehole dewatering, potable water treatment, and hydrogeology systems.
The Prime Jet 240 Deep Well Water Pump can be configured for shallow wells with suction lifts up to 7.5m (24.6 ft) or deep wells with suction depths up to 50m (164 ft). This versatility makes it suitable for aquifer tests, Darcy’s Law applications, groundwater flow equations, and water security systems in both residential houses and DIY home installations.
Davey's Prime Jet 240 Deep Well Pump's Variations
| Pump Name | Product Code (SKU) | |
|---|---|---|
| Single Phase | Three Phase | |
| Prime Jet 240 Water Pump – Base Convertible Pump (Single Phase) | 48501 | 48503 |
| Prime Jet 240 Water Pump – 22680 Injector | KPJ240680 | KPJ2403680 |
| Prime Jet 240 Water Pump – 22681 Injector | KPJ240681 | KPJ2403681 |
| Prime Jet 240 Water Pump – 22681 Injector | KPJ240682 | KPJ2403682 |
| Prime Jet 240 Water Pump – 22681 Injector | KPJ240683 | KPJ2403683 |
Method of Identification
The product code numbers (48501 and 48503) identify the motor configuration and electrical supply.
The “Prime Jet 240” designation refers to the pump’s maximum shallow well capacity of 238 liters per minute (63 gallons per minute) at 210 kPa.
The numbers also symbolize the pump’s design series and performance rating.
As for the injector attachment iteration of the Prime Jet electropump, Davey’s unique approach fits it through a product code of:
KPJ: This alphabetical assortment on the initial part of the product code represents the Prime Jet 240 water pump.
Numerical Figure: For the latter side of the unique identifier, the numbers signify the different injectors for the jet pump available that is according to the number of phases.
In this case, the image on the right has KPJ240680, which would stand for Davey’s Single Phase Prime Jet 240 Water Pump 22680 Injector.
Attachment
Pressure Tank
The Prime Jet 240 series can be connected to a Davey Supercell pressure tank, forming a complete automatic water pump system.
The pressure tank stores pressurized water, reducing frequent cycling and stabilizing fluid pressure.
This improves energy efficiency, extends pump lifespan, and ensures consistent water delivery for residential houses, irrigation systems, and potable water supply.
In hydrogeology and groundwater treatment systems, pressure tanks are critical for maintaining steady flow and preventing fluctuations that could affect aquifer tests or water security applications.
Pressure Controller
Alternative to the mechanical pressure switch – which is a defaulted setup for the Prime Jet 240 water pump, the Torrium2 as a smart pressure controller can be opted to replace the former attachment.
It is defined as ‘smart’ for its intelligent capacity, where the Torrium2 gauges routine use unique to each household and individual / family application, which it then ‘memorises’ the low pressure threshold using a built-in laser detection for the existing water pipeline infrastructure.
When a tap becomes opened once again, the flow rate must reach a certain pressure point where the Torrium2 pressure controller would then kickstart the centrifugal pump, and this is done so to prevent pump cycling.
Pump cycling could be the result of a leakage found in the piping, or even old taps, causing eletropumps installed to constantly run to eventual failure otherwise.
Pump Skid
The pump skid provides a stable mounting base for the Prime Jet Water Pump.
In construction and plumbing installations, a skid ensures proper alignment of the pump, reduces vibration, and simplifies installation.
It is particularly useful in environments where pumps are exposed to groundwater, soil salination, or heavy-duty irrigation systems.
Mechanical Pressure Switch
The Pime Jet 240 uses a mechanical pressure switch to monitor system pressure.
The switch automatically starts the pump when pressure drops below the cut-in value and stops it when the cut-out pressure is reached.
This simple design ensures reliable operation with minimal maintenance, making it suitable for construction drainage, irrigation, and DIY home plumbing systems.
40mm / 50mm Barrel Union (BSP Fitting)
The inlet size is 1½” BSP Female (38 mm), and the outlet size is 1¼” BSP Female (32 mm).
These fittings allow secure connection to PVC or plastic pipes, ensuring proper suction and discharge.
In construction plumbing systems, barrel unions simplify installation and maintenance, while in hydrogeology applications they ensure airtight connections to prevent loss of prime in well dewatering systems.
Foot Valve
A foot valve is required on all models and is included with deep well injectors.
It prevents backflow and maintains prime during operation. In groundwater pumping, boreholes, and aquifer systems, foot valves are critical for preventing contamination and ensuring reliable suction.
They also play a role in Darcy’s Law applications, where maintaining prime is essential for accurate flow measurements.
Jet Kits
Jet kits are interchangeable and allow the pump to be configured for shallow or deep well operation.
Shallow Well Jet Kit: Includes suction housing, jet, and venturi. Uses the Venturi Effect to create suction and draw water from shallow sources such as dug wells, sand points, ponds, and springs.
Deep Well Injector Kit: Includes injector body, suction and drive pipe fittings, and an Automatic Demand Response (ADR) valve. Suitable for artesian wells, tube wells, and boreholes, where water must be lifted from greater depths.
These kits make the Prime Jet 240 Booster Pump adaptable to different environments, from residential potable water systems to heavy-duty construction dewatering projects.
Certification
ISO 9001-Quality Management: Consistent production quality and product dependability are guaranteed for all Davey products, as it’s manufactured using consistent standards throughout the supply chain thanks to this certificate.
Environmental Management, ISO 14001: Davey’s dedication to environmentally conscious design and production methods is demonstrated by the fact that manufacturing procedures adhere to ISO 14001 environmental management standards.
TEFC Motor
The pump is driven by a TEFC (Totally Enclosed Fan Cooled) motor with IP56 protection, safeguarding against dust, vermin, and water ingress.
Single-phase models include inbuilt thermal overload protection with automatic reset, while three-phase models require magnetic contactors with overload protection.
The motor operates at 2850 rpm, 2-pole, delivering reliable performance ins construction, irrigation, and hydrogeology systems.
Inlet
The pump is driven by a TEFC (Totally Enclosed Fan Cooled) motor with IP56 protection, safeguarding against dust, vermin, and water ingress. Single-phase models include inbuilt thermal overload protection with automatic reset, while three-phase models require magnetic contactors with overload protection. The motor operates at 2850 rpm, 2-pole, delivering reliable performance ins construction, irrigation, and hydrogeology systems.
Volute
A volute is the spiral casing that surrounds the impeller inside a Centrifugal pump. After the impeller accelerates the liquid outward, the volute collects this high-velocity fluid and guides it toward the discharge outlet.
Its expanding cross-sectional area slows the liquid down, converting kinetic energy into pressure energy. This gradual energy transformation allows the pump to deliver fluid at a higher pressure while maintaining stable and controlled flow.
Impellers & Diffuser
The pump uses a cast bronze impeller and diffuser for durability and efficiency.
Types of Impellers: Semi-open closed, and open impellers designs are used depending on jet kit configuration.
The diffuser ensures smooth hydraulic performance and supports fluid dynamics principles such as Bernoulli’s Equation, volumetric flow rate, and pressure head.
Included In The Box
Prime Jet 240 Deep Well Pump
User Manual
Proof of Purchase
24 Months of Manufacturer Warranty
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