Davey's DynaJet Water Jet Pump With Pressure Switch - XJ70P
Key features:
- Standard automatic pressure system type.
- Suitable for single storey house (2-3 shower heads with 4-5 pipes).
- For housing & garden use.
- 12 months warranty for pump, motor & controller.
- Fixed pressure setting on every usage.
- Easy installation, no setting required.
Classified As:
Overview of Davey's DynaJet Water Jet Pump With Pressure Switch - XJ70P
Davey’s XJ70P is a high-performance automatic pressure pump that is ideal for bigger residential properties and homes with higher water usage. Perfectly suited for household water supply, pressure boosting, rainwater harvesting and water transfer applications, this water pump provides a good combination of high hydraulic performance, dependability and efficiency to maintain consistent water pressure throughout the home.
The XJ70P has a jet assisted centrifugal pump design and has an integrated pressure switch that automatically responds to water demand, giving pressurised water when required. Its rugged build uses corrosion resistant materials and a TEFC (Totally Enclosed Fan Cooled) motor making it ideally suited for ongoing everyday use in residential indoor and outdoor locations.
The XJ70P has a maximum flow of 70 litres per minute and a maximum head of 48 metres, giving more capacity than the XJ50P and is appropriate for slightly larger households, several bathrooms or when a higher flow and pressure is required. Combining reliability and low maintenance requirements, this gives an effective and reliable solution for modern household water systems.
Method of Identification
The DynaJet water pump range is identified by the “XJ” model prefix, an abbreviation that is used to categorise the series and helps keep inventory organised across the warehouse network of Davey Water Products Pty Ltd.
Take the model XJ70P as an example. The “XJ” identifies the DynaJet series, while the number “70” indicates the pump’s maximum flow rate of 70 litres per minute (LPM). At the end of the model code, you’ll find the letter “P”, which shows that the pump comes fitted with a Pressure Switch as standard.
More importantly, this model code gives every DynaJet electropump a unique identity that lasts for years, even decades. Service records, spare parts, and component specifications can all be traced back to the correct model, making repairs and maintenance much easier. A standardised model identifier is also used across global supply chains, ensuring the pump is recognised consistently by manufacturers, distributors, service technicians, and customers worldwide.
Attachment
The Davey XJ70P is designed to operate as part of an automatic pressure system when paired with Davey’s Supercell pressure tank. For a compact and hassle-free installation, Davey recommends using either the 24008P or 24018P variant of Supercell pressure tank sizing, both of which can be mounted directly on top of the pump.
For suction lift applications, a foot valve may also be required to maintain reliable priming and ensure the system operates consistently. The pump is already equipped with an integrated pressure switch and check valve, so no additional control components need to be installed. This makes the setup simpler while providing dependable automatic operation.
Supercell Pressure Tank
The Supercell pressure tank by Davey is designed to work seamlessly with the XJ70P booster pump, helping to maintain stable pressurisation while reducing unnecessary pump cycling. By storing a small volume of pressurised water, the tank minimises frequent starts and stops, which can extend the centrifugal pump’s service life and improve the overall efficiency of the system.
For the XJ70P, Davey recommends the Supercell 24008P or 24018P pressure tank. Both models can be mounted neatly on top of the pump, creating a compact and tidy installation that’s easy to fit into a wide range of applications.
When paired together, the XJ70P and Supercell Pressure Tank deliver a dependable automatic pressure system that’s ideal for domestic water supply, pressure boosting, and rainwater harvesting systems.
Built for durability, Supercell pressure tanks provide smooth and consistent water pressure while protecting the pump from unnecessary wear caused by excessive cycling. As a result, the entire system operates more efficiently and is built to deliver reliable performance for years to come.
Certification
The XJ70P is manufactured in accordance with internationally recognised ISO 9001 Quality Management and ISO 14001 Environmental Management systems, as well as relevant Australian Standards. These certifications reflect Davey’s commitment to delivering high-quality products while maintaining consistent manufacturing practices and responsible environmental management.
To ensure dependable performance, the pump is equipped with a Totally Enclosed Fan Cooled (TEFC) motor with an IP55 protection rating. This design helps prevent dust and water from entering the motor, making it well suited for demanding domestic water supply applications. The motor also features Class F insulation, providing greater thermal resistance and helping maintain reliable operation under varying conditions.
ISO 9001 – Quality Management: ISO 9001 sets the requirements for an effective Quality Management System (QMS). By following this internationally recognised standard, Davey ensures that every DynaJet water pump is manufactured to consistent quality levels while meeting customer expectations and applicable regulatory requirements. Continuous improvement of manufacturing processes also helps deliver reliable performance and long-term product consistency.
ISO 14001 – Environmental Management: ISO 14001 focuses on improving environmental performance through responsible manufacturing practices. It provides a framework for managing resources efficiently, reducing waste, and minimising environmental impact. During the production of the DynaJet centrifugal pump, raw materials are carefully planned and used efficiently wherever possible, with waste being controlled and recycling practices implemented where applicable.
Australian Standards: The Davey XJ70P is designed to comply with relevant Australian Standards, which establish recognised requirements for the safety, performance, and reliability of products used throughout Australia. Developed by Standards Australia in collaboration with industry experts, government bodies, and technical specialists, these standards help ensure the pump is:
- Safe to install and operate.
- Suitable for its intended application.
- Reliable and built for long-term performance.
- Compatible with Australian plumbing and electrical systems.
- Compliant with applicable health, environmental, and energy-efficiency requirements.
AS/NZS 4020 Tested: The DynaJet booster pump has also been tested to AS/NZS 4020, the Australian and New Zealand Standard covering products intended for contact with drinking (potable) water. This testing verifies that the materials used in the pump do not adversely affect water quality by introducing harmful tastes, odours, contaminants, or toxic substances. As a result, the pump is suitable for use in potable water systems and can be confidently installed in domestic applications where water is supplied for everyday household use, including showering, washing, and drinking, subject to local plumbing regulations.
TEFC Motor
Equipped with a totally enclosed fan-cooled (TEFC) motor with an enhanced design that improves durability, the XJ70P features long-term performance for domestic water pumping applications. A TEFC motor is a complete enclosure unlike open frame motors that protects the interior electrical components from dust, grime, dampness, insects and other airborne contaminates. This added protection is especially beneficial for pumps situated outside, where partially exposed areas or utility spaces and environment may impair the motor’s performance over time.
With an external cooling fan that is linked to the motor shaft to keep the motor’s temperature down, this would continually blow air across the motor housing which helps to remove heat and also helps to ensure optimal functioning during repeated start-stop cycles. This cooling system, combined with the Class F insulation system of the motor and its integral automated thermal overload protection, prevents the engine of the DynaJet water pump from overheating and electrical stress, thus extending its service life and reducing the need for maintenance.
Paired with materials science for lowered noise production, the TEFC motor on the XJ70P delivers homeowners reliable day to day performance, quieter operation, improved resilience to environmental conditions and more.
Inlet And Flange Connection
The XJ70P centrifugal pump is fitted with 1¼-inch BSP female inlet and outlet connections, making it compatible with a wide range of domestic water supply systems and standard plumbing installations. Using traditional BSP threaded fittings, the pump can be connected easily to pipes, valves, pressure tanks, and other common plumbing components found in residential applications.
The inlet connection is engineered to provide efficient water intake, helping the pump achieve reliable priming and consistent performance. On the discharge side, the outlet delivers pressurised water throughout the household distribution system to maintain dependable water pressure where it’s needed.
For suction lift installations, a suitable foot valve can be fitted to help retain prime and support reliable pump operation. Thanks to its standardised connection sizes, installation and future maintenance are both straightforward. Whether you’re installing a new pressure system or replacing an existing pump, the XJ70P offers a practical, cost-effective solution that’s designed for long-term reliability.
Volute
In here, the volute casing of XJ70P has been manufactured from glass-filled Noryl, a high-performance engineering thermoplastic known for its exceptional strength, corrosion resistance, and dimensional stability. Lightweight yet highly durable, the casing protects the water jet pump’s internal hydraulic components and delivers dependable performance in domestic water supply, pressure boosting, and rainwater applications.
As a key part of the hydraulic system, the volute casing works alongside the jet assembly to direct water from the impeller to the discharge outlet. During this process, water velocity is efficiently converted into pressure, resulting in smooth, consistent water flow throughout the water pump’s system.
Unlike conventional metal pump casings, the glass-filled Noryl® construction resists rust, scale, and corrosion. This makes the XJ70P particularly well suited for use with rainwater tanks, stored water supplies, and everyday household water systems where long-term durability is essential.
Built for reliable performance, the volute casing also contributes to the pump’s high hydraulic efficiency while helping reduce maintenance requirements. Its robust design supports years of dependable operation, making the XJ70P a practical choice for a wide variety of residential water supply applications.
Impeller And Diffuser
The Davey XJ70P features a glass filled polycarbonate impeller and precision engineered jet and venturi diffuser system of durable acetal materials. This combination forms the basis of the pump’s jet assisted hydraulic design that enables efficient transport of water and generation of pressure required for household water supply applications.
The impeller is the part of the pump that receives the energy from the motor and transposes it to the water. It speeds the water up as it passes through the pump and creates the pressure needed to ensure residences get a reliable supply of water. The construction is made of glass-filled polycarbonate and provides strength, dimensional stability and resistance to wear and corrosion for long-lasting performance in demanding working situations.
The impeller interacts with the diffuser, jet and venturi elements to optimise the flow of water through the pump to increase the pump’s suction performance and hydraulic efficiency. The jet assisted design assures continuous pressure and stable operation of the XJ70P, making it perfect for water pressure boosting, rainwater harvesting and domestic water transfer systems.
Single Stage Closed Vane Impeller Design
The Davey XJ70P has a single stage closed vane impeller design. It is designed to efficiently produce water flow and pressure for residential water supply applications. Front and rear shrouds enclose the vanes. This allows water to flow smoothly through the impeller channels, decreasing hydraulic losses and increasing overall efficiency.
The impeller is constructed from glass filled polycarbonate for excellent strength, rigidity, corrosion and wear resistance. This material selection also helps to make the pump light and durable, while ensuring that the hydraulic performance is maintained over time.
The XJ70P’s jet assisted centrifugal pump has a closed vane impeller design, which together with the jet and venturi system, delivers reliable suction capability, steady water pressure and smooth flow characteristics. The result is reliable performance for household applications such as pressure boosting, rain water harvesting and domestic water transfer.
Mechanical Seal
The Davey XJ70P is equipped with a mechanical shaft seal that prevents water leakage between the pump’s wet end and the motor, ensuring reliable and efficient performance. The mechanical seal is engineered to ensure a dependable seal under fluctuating pressure conditions. This is essential to avert moisture infiltration and to maintain hydraulic efficiency.
The seal assembly comprises a carbon stationary seal face, a ceramic rotating seal face, and a 304 stainless steel spring, providing an effective combination of wear resistance, corrosion resistance, and extended service life. Only premium materials are chosen that can last extended use in home water supply, pressure boosting, and rainwater harvesting systems.
The mechanical seal minimises leakage and diminishes wear on critical components, so enhancing the XJ70P’s maintenance efficiency, dependable performance, and long-term operational reliability.
O-Ring And Spacer
Nitrile rubber O-rings are employed in the pump assembly of the Davey XJ70P to establish dependable seals between corresponding components and mitigate water loss under operational pressure. These O-rings create secure seals around the casing and internal components, safeguarding the pump’s hydraulic integrity and facilitating maintenance and servicing as required.
Precision-engineered spacers and internal components facilitate the sealing arrangement and guarantee accurate alignment and positioning of the pump’s rotating and stationary elements. These components, functioning in unison, mitigate wear, maintain optimal sealing performance, and facilitate smooth, efficient pump operation over time. The XJ70P utilises robust materials and superior sealing components to guarantee its longevity, little maintenance, and consistent performance in residential water supply and pressure-boosting applications.
XJ70P DynaJet Water Pump's Operating Limits
Flow rates of up to 70 litres per minute and a maximum total head of 48 metres is enabled with the XJ70P version of the DynaJet centrifugal pump. This is factory equipped for automatic pressure-controlled operation with a cut-in pressure of 210 kPa and a cut-out pressure of 420 kPa. If built appropriately it can cope with water temperatures up to 50°C 122°F ambient temperatures up to 55°C / 131°F and suction lifts up to 7 metres / 22.97 ft. Working within these parameters helps to achieve optimum efficiency, performance and long-term reliability.
| Operating Limits | |
| Capacities to | 70 lpm |
| Maximum total head | 48m |
| Cut-in pressure (factory setting) | 210 kPa |
| Cut-out pressure (factory setting) | 420 kPa |
| Maximum liquid temperature | 50°C |
| Maximum ambient temperature | 55°C |
| Maximum suction lift | 7m |
| Inlet size (BSP) | 1” F |
| Outlet size (BSP) | 1” F |
DynaJet Water Pump's Dimensions
The Davey XJ70P is built in a compact yet strong construction, making it easy to install in domestic water supply and pressure boosting systems. The overall dimensions are 455 mm (L) × 124 mm (W) × 146 mm (H) and it weighs 11.0kg net, providing greater hydraulic capacity in a comparatively compact size. It’s also designed to easily connect to compatible Davey Supercell pressure tanks and other parts of a domestic water system.
| Dimensions | |||||||||
| Model | A | B | C | D | E | F | Inlet (BSP) | Outlet (BSP) | Net Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| XJ50P | 430 | 124 | 146 | 102 | 185 | 226 | 1″ F | 1″ F | 9.0 |
| XJ70P | 455 | 124 | 146 | 102 | 210 | 226 | 1¼” F | 1″ F | 11.0 |
| XJ90P | 505 | 124 | 146 | 102 | 210 | 226 | 1¼” F | 1″ F | 14.0 |
Hydraulic Performance And Q-H Curve
The Davey XJ70P is designed to offer more hydraulic performance for homes with larger water needs. The pump can deliver a maximum flow rate of 70 litres per minute and a maximum head of 48 metres, so it can maintain a strong and consistent water pressure across several outputs, making it perfect for larger household water supply and pressure boosting applications.
The jet-assisted centrifugal pump design optimises the passage of water through the hydraulic system, enhancing suction performance and overall pumping efficiency, while maintaining reliable water delivery under varied demand situations. The XJ70P is factory set to operate automatically, with a cut-in pressure of 210 kPa and a cut-out pressure of 420 kPa to provide responsive pressure control throughout the system.
The XJ70P is designed to balance flow, pressure and efficiency delivering reliable hydraulic performance for residential water supply, rain water harvesting, water transfer and household pressure boosting systems where additional capacity is needed.
Hydraulic Loss
The Davey XJ70P uses a single-stage jet assisted centrifugal hydraulic to decrease the hydraulic losses and optimise the pumping efficiency across the whole working range. Combined with a closed vane impeller, precision-moulded jet and venturi assembly and optimised volute casing, these features enhance smooth water flow, decreasing turbulence and energy losses within the pump.
Manufactured using high quality, durable engineering materials the hydraulic components are designed to preserve dimensional accuracy and performance over time. The XJ70P’s flow path is designed to be exceptionally efficient at converting motor power to water movement. This means it delivers high flow rates and strong pressure but consumes only the energy required to do the job.
The XJ70P provides reliable hydraulic efficiency through the reduction of internal recirculation and flow resistance, guaranteeing steady water pressure and dependable performance in domestic water supply, pressure boosting and rainwater collecting applications.
Electrical Data
| Electrical Data | |||
|---|---|---|---|
| Model | XJ50P | XJ70P | XJ90P |
| Supply Voltage | 220–240V | ||
| Supply Frequency | 50Hz | ||
| Full Load Current | 3.6A | 5.1A | 6.6A |
| Locked Rotor Current | 12A | 18A | 28A |
| Input Power (P1) | 0.84kW | 1.15kW | 1.40kW |
| Output Power (P2) | 0.58kW | 0.80kW | 1.10kW |
| Insulation Class | Class F | ||
| Starting | P.S.C. | ||
| IP Rating | IP55 | ||
Materials of Construction
| Materials of Construction | |
|---|---|
| Part | Material |
| Impellers | Glass filled polycarbonate |
| Pump Casing | Glass filled Noryl |
| Pump Shaft Sleeve | Brass |
| Internal Check Valve | Delrin |
| Internal Check Valve Spring | Stainless Spring Steel |
| Jet and Venturi | Acetal |
| Inlet & Outlet Ports | Glass filled Noryl |
| Seal Ring (Stationary) | Carbon |
| Seal Ring (Rotating) | Ceramic |
| Seal Spring | 304 Stainless Steel |
| O-Rings | Nitrile Rubber |
The Davey XJ70P is made from high grade corrosion resistant materials suitable for the demands of residential water supply applications, providing durability, reliability and a long service life. The pump has a glass-filled polycarbonate closed vane impeller and a glass-filled Noryl pump case, delivering outstanding strength, dimensional stability and resistance to corrosion and wear. The pump shaft is 303 stainless steels with a brass shaft sleeve for further protection and durability for continuous operation.
The pump’s jet, venturi and internal check valve components are made of advanced thermoplastics, such as acetal and Delrin materials that are strong, precise and resistant to water exposure for effective hydraulic performance. The check valve and seal springs are made of stainless steel to provide superior corrosion resistance and long-term durability.
The mechanical seal assembly employs carbon and ceramic seal faces and a spring made of 304 stainless steel to reduce leakage and provide reliable operation. Nitrile rubber O-rings are used to provide tight sealing along the pump. These well selected materials combine to give the XJ70P minimum maintenance, effective performance and long-term durability in residential pressure boosting, rainwater harvesting and domestic water supply systems.
Installation Guide
The Davey XJ70P is easily incorporated into home water supply, pressure boosting and rainwater harvesting systems. To obtain the best performance, mount the pump on a firm, level surface in a clean, well-ventilated location sheltered from excessive weather exposure and flooding. Like all XJ Series variants, the XJ70P is designed for use with a Davey Supercell Pressure Tank, with the 24008P and 24018P types preferred for direct top-mount installation.
All pipe work for suction and discharge should be properly sized and sealed to prevent air leaks and to reduce frictional losses. For systems with a suction lift of more exceeding 1 metre, a quality foot valve is recommended. For certain applications, the internal suction-side check valve of the pump should be removed before joining the suction piping for proper functioning.
The pump and suction line must be completely primed with water through the priming port before starting up. After filling, replace the priming plug and secure it before powering the pump. Proper priming is vital to guarantee dependable operation, maintain hydraulic efficiency and protect the pump from damage due to dry running.
The XJ70P is supplied with a 220 – 240V, 50Hz electrical supply. Installation must be carried out in line with local electrical legislation and the manufacturer’s installation instructions. Regular inspection of pipe connections, pressure settings and system components will assist insure effective operation and long-term reliability.
Included In The Box
DynaJet Water Jet Pump – XJ70P
Pressure Switch
User Manual
Proof of Purchase
12 Months of Manufacturer Warranty
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