Overview of Davey's DynaJet Water Jet Pump With Pressure Switch - XJ90P
The XJ90P is the biggest capacity pump in the XJ Series and is designed to give high water pressure and flow rates for larger homes and high demand household water systems. The XJ90P is perfect for pressure boosting, rainwater harvesting, domestic water supply or automatic water transfer applications and is a solid solution for homes with several bathrooms, large irrigation requirements or high simultaneous water demand.
The XJ90P features a jet-assisted centrifugal pump design and an integrated automated pressure switch to provide water on demand and consistent system pressure. Corrosion-resistant construction, sturdy hydraulic components and a TEFC motor offer reliable performance and long service life in a variety of household situations.
The XJ90P has the greatest flow capacity in the XJ line, with a maximum flow rate of 90 litres per minute, making it well suited to families that demand increased water delivery without compromising reliability or efficiency. The XJ90P offers a durable performance and low maintenance requirements, making it an effective alternative for current home water supply systems.
Method of Identification
The Davey XJ90P is the most advanced model in the XJ Series, designed for residential applications that necessitate consistent pressure delivery and optimum flow performance. It is an optimal solution for domestic water supply, pressure boosting, rainwater harvesting, and automatic water transfer applications, and is specifically designed for high-demand water systems and large homes.
The XJ90P is capable of providing dependable performance and efficient operation in a wide range of household water requirements, thanks to its jet-assisted centrifugal pump design and durable TEFC motor. It is the highest-capacity model in the range, with a maximum discharge rate of 90 L/min and a maximum head of 46 m. Consequently, it is applicable for applications that require enhanced water delivery.
Attachment
The Davey XJ90P is meant to operate as part of a comprehensive automatic pressure system and must be used in conjunction with a Davey Supercell Pressure Tank for reliable pressure control and efficient system performance. Davey recommends the Supercell 24008P or 24018P pressure tank that mounts directly to the pump for a compact, space-saving installation.
A foot valve is also advised for installations using a suction lift to aid in priming and keep water in the suction line. The XJ90P has an integrated pressure switch and an internal check valve, which simplifies installation and reduces the need for extra control components.
Supercell Pressure Tank
The Davey Supercell Pressure Tank is a vital component of the XJ90P automated pressure system providing consistent water pressure with less unnecessary pump cycling. The tank holds a reserve of pressurised water, allowing the system to respond more efficiently to changes in water demand, resulting in smoother operation, higher energy efficiency and less wear and tear on the pump.
Specifically recommended for use with the XJ90P are the Davey Supercell 24008P and 24018P pressure tanks, both of which are intended for easy mounting on top of the pump. It offers a compact, integrated pressure boosting device, ideal for home water supply, rainwater harvesting and household pressure applications.
Designed for long term reliability, the Supercell Pressure Tank contributes to system optimisation by maintaining steady pressure, minimising frequent start-stop operation and helping to extend the total life of the pump and associated components.
Certification
The Davey XJ90P is produced under internationally acknowledged ISO 9001 Quality Management and ISO 14001 Environmental Management standards, demonstrating Davey’s dedication to product quality, production consistency and environmental responsibility. The pump features an IP55-rated TEFC (Totally Enclosed Fan Cooled) motor, which gives protection against dust ingress and water spray, and Class F insulation provides enhanced thermal resistance and reliable performance under demanding home pumping settings. These certifications and ratings are designed to provide assurance of reliable performance, durability and long-term operation for household water supply and pressure boosting applications.
ISO 9001 – Quality Management: ISO 9001 provides an internationally recognised framework for maintaining a robust Quality Management System (QMS). By adhering to this standard, Davey maintains consistent manufacturing and quality processes across its DynaJet water pumps, helping ensure products meet customer expectations and relevant regulatory requirements. A strong focus on ongoing process improvement also supports dependable performance and consistent product quality over time.
ISO 14001 – Environmental Management: ISO 14001 provides a structured approach to improving environmental performance through responsible and efficient manufacturing practices. The standard encourages effective resource management, waste reduction, and measures to minimise environmental impact. In the manufacture of the DynaJet centrifugal pump, raw materials are carefully managed and used efficiently wherever practical, while waste reduction and recycling processes are implemented where applicable.
Australian Standards: The Davey XJ70P is designed to meet relevant Australian Standards, which provide recognised guidelines for product safety, performance, and reliability across Australia. Developed through collaboration between Standards Australia, industry professionals, government organisations, and technical experts, these standards help ensure the pump is:
- Safe to install and operate.
- Appropriate for its intended use.
- Designed for reliable, long-term operation.
- Compatible with Australian plumbing and electrical systems.
- Designed to meet applicable health, environmental, and energy-efficiency requirements.
- AS/NZS 4020 Tested: The DynaJet booster pump has been tested to AS/NZS 4020, the Australian and New Zealand Standard for products that come into contact with drinking (potable) water. This testing assesses whether materials used in the pump could negatively affect water quality through the introduction of undesirable tastes, odours, contaminants, or toxic substances.
This testing supports the suitability of the pump for potable water applications, including domestic installations where water is used for everyday household needs such as drinking, showering, and washing, subject to applicable local plumbing requirements.
TEFC Motor
The Davey XJ90P is supplied with a Totally Enclosed Fan Cooled (TEFC) motor for reliable and long-term durability in domestic water pressure and delivery applications. The entirely enclosed architecture protects the motor’s internal components from dust, filth, moisture and other environmental contaminants, allowing for installation in a broad variety of indoor and outdoor conditions.
To keep the working temperature down, the motor has an exterior cooling fan that blows air across the motor casing during operation. This cooling system efficiently removes heat, ensuring continuous performance throughout frequent start-stop cycles and moments of high demand.
Class F insulation, IP55 protection and automated thermal overload prevention further strengthen the TEFC motor, protecting it from extreme temperatures and electrical overload circumstances. These features improve reliability, decrease maintenance and increase service life, making the XJ90P a reliable alternative for demanding home water supply and pressure boosting systems.
Inlet And Flange Connection
The Davey XJ90P has a 1¼” BSP female inlet connection and a 1″ BSP female outlet connection giving the increased input capacity needed to support the improved flow performance of the pump. The enlarged intake also helps to reduce suction losses and enhance water delivery efficiency and a standard 1” discharge connection allows for easy integration with domestic plumbing and pressure boosting systems.
The threaded BSP connections allow for easy installation and compatibility with generally available pipes, fittings, valves and accessories. Designed for domestic water supply, rainwater harvesting and pressure-boosting applications. The wider intake arrangement provides the XJ90P with greater flow capacity to assist maintain reliable hydraulic performance and consistent water pressure throughout the system.
Volute
The Davey XJ90P is built with a glass-filled Noryl volute shell for strength, durability and long-term resistance to corrosion in residential water supply applications. It is a high-performance engineering thermoplastic with outstanding dimensional stability and corrosion resistance that makes it a reliable alternative to typical metal pump casings.
The volute casing is an integral part of the pump hydraulic system and is designed to efficiently capture the water discharged by the impeller and convert velocity to pressure. The internal design has been adjusted to create smooth water flow, minimise turbulence and increase overall hydraulic efficiency. These elements contribute to the strong flow and pressure performance of the XJ90P.
The corrosion-resistant design of the volute casing makes the XJ90P ideal for use in rainwater harvesting, residential water supply, pressure boosting and water transfer applications whilst maintaining the pump’s reputation for reliability, low maintenance and extended service life.
Impeller And Diffuser
The Davey XJ90P is fitted with a single stage closed vane impeller made from glass filled polycarbonate, giving a great combination of robustness, durability and hydraulic efficiency. The closed vane design minimises internal recirculation and energy losses, allowing smooth water flow and effective pressure generation throughout the pump’s operational range. This enables the XJ90P to achieve high flow rates while providing reliable performance in demanding residential water supply applications.
The impeller is coupled with a precisely built jet and venturi diffuser system made from durable acetal materials. The diffuser controls and directs the flow of water through the pump for maximum hydraulic efficiency, better suction performance, and steady pressure flow. The pump’s jet assisted centrifugal design incorporates the impeller and diffuser to improve the efficiency of water transfer while reducing turbulence and hydraulic losses.
The combination of sturdy materials and optimum hydraulic design means the XJ90P will give reliable pressure boosting, efficient water delivery and long service life for domestic water supply, rainwater harvesting and water transfer systems.
Closed Vane Impeller Design Type
The Davey XJ90P includes a single stage closed vane impeller for efficient transfer of water, pressure performance and dependable operation in high demand residential water systems. The enclosed vane design has covered flow passageways that help direct the water smoothly through the impeller, decreasing turbulence, minimising hydraulic losses and enhancing overall pumping efficiency.
The impeller is constructed from a glass-filled polycarbonate, which has high mechanical strength and exceptional resistance to corrosion, wear and dimensional distortion. This solid design provides stable hydraulic performance over a long time even with frequently occurring operation cycles and different water requirements.
In the XJ90P jet-assisted centrifugal pump design, the closed vane impeller works together with the jet and venturi system to improve suction, optimise water flow and provide the high flow rates needed for larger homes and demanding domestic water supply applications.
Mechanical Seal
To ensure effective operation and safeguard sensitive components from water ingress, the Davey XJ90P features a quality mechanical shaft seal to prevent water leaking between the hydraulic section of the pump and the motor. The seal assembly is suitable for the pressures and operating conditions of domestic water supply and pressure boosting applications.
The mechanical seal is constructed with a composite of carbon and ceramic seal faces and a 304 stainless steel spring for superior wear resistance, corrosion prevention and long-term sealing performance. This material blend provides a secure seal during ongoing operation and reduces the friction and wear of components.
By reducing leakage risk and protecting the motor from water ingress the mechanical seal ensures the XJ90P is reliable, requires little maintenance and lasts a long time making it ideal for demanding domestic water supply, rainwater harvesting and pressure boosting systems.
O-Ring And Spacer
The Davey XJ90P employs nitrile rubber O-rings throughout the pump assembly to establish tight seals between important hydraulic parts, which can assist avoid leaks and keep system pressure throughout operation. These O-rings are designed to resist water exposure, to be flexible and durable, and are critical to maintaining the pump hydraulic integrity and deliver reliable long-term performance.
Precision-engineered spacer and internal support components provide support for the sealing arrangement and thus help ensure proper positioning and alignment of the pump’s revolving and stationary elements. These components are designed to provide smooth operation, effective sealing performance and enhanced overall reliability by keeping uniform component spacing and eliminating avoidable wear. O-rings and spacer components work together to reduce maintenance requirements and make the XJ90P operate efficiently and reliably in household water supply, pressure boosting and rainwater collecting.
Operating Limits of XJ90
The Davey XJ90P is built for high-capacity performance and dependable operation, ideal for a range of household water supply and pressure boosting applications. The pump can achieve flow rates of up to 90 litres per minute and a maximum total head of 46 metres, making it ideal for larger homes and installations with higher water requirements. Factory set to provide responsive automatic pressure management with a cut-in pressure of 210 kPa and a cut-out pressure of 350 kPa. The XJ90P, when fitted appropriately, can cope with liquid temperatures up to 50°C, ambient temperatures up to 55°C and maximum suction lift of 7 metres. Operating within these parameters helps provide optimum hydraulic performance, energy efficiency and long-term reliability.
| Operating Limits | |
| Capacities to | 70 lpm |
| Maximum total head | 48m / 157.48 ft |
| Cut-in pressure (factory setting) | 210 kPa |
| Cut-out pressure (factory setting) | 420 kPa |
| Maximum liquid temperature | 50°C / 122°F |
| Maximum ambient temperature | 55°C / 131°F |
| Maximum suction lift | 7m / 22.97 ft |
| Inlet size (BSP) | 1” F |
| Outlet size (BSP) | 1” F |
XJ90P Centrifugal Pump's Dimensions
The biggest of the XJ Series models, the XJ90P is designed to be rugged enough to handle the increased hydraulic capacity, while yet being acceptable for household installations. With an overall length of 505 mm, width of 124 mm and height of 146 mm, the pump offers a small but robust solution for high demanding household water supply, pressure-boosting and rainwater harvesting applications. Also designed for easy integration with suitable Davey Supercell pressure tanks and other system components.
| 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 XJ90P is designed to provide robust and reliable hydraulic performance for larger houses and high-demand residential water systems. It can supply water at a maximum flow rate of 90 litres per minute and a maximum head of 46 metres, ensuring robust water delivery and steady pressure at many outlets at the same time.
Its jet-assisted centrifugal design blends efficient water movement with better suction performance, allowing for reliable operation across fluctuating household water demands. The improved hydraulic system ensures consistent pressure and high flow capacity making the XJ90P ideal for residential water supply, rainfall harvesting, pressure boosting and water transfer applications.
When plumbed to a pressure tank for automated operation, the pump is factory preset to start at 210 kPa and stop at 350 kPa to allow for responsive system performance and on-demand water supply throughout the residence.
Hydraulic Loss
The Davey XJ90P features an efficient jet assisted centrifugal hydraulic system to help decrease hydraulic losses and optimise water delivery performance. Its single stage closed vane impeller, precision-moulded jet and venturi assembly and improved volute casing design combine to encourage smooth water flow through the pump, minimising turbulence, recirculation and flow constraints.
The hydraulic components are made of tough engineering materials that are built to keep their shape over years of use, helping to preserve pumping efficiency and steady pressure performance. The XJ90P is able to convert motor power to usable hydraulic output more efficiently – and so achieve the high-flow capability of up to 90 L/min – by minimising internal energy losses and enhancing flow characteristics.
This efficient hydraulic design ensures stable pressure delivery, better energy economy and long-term operating reliability, making the XJ90P well suited for large residential water supply, pressure-boosting, rainwater harvesting and water transfer 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 XJ90P is constructed with corrosion-resistant metals and high-performance engineering thermoplastics to ensure durability, dependability and a long service life in demanding residential water supply applications. The pump has a glass filled polycarbonate closed vane impeller and a glass filled Noryl pump case for superior strength, dimensional stability and resistance to corrosion and wear. The pump shaft is made from 303 stainless steel with a brass shaft sleeve for extra durability and protection during continuous use.
The hydraulic assembly uses an acetal jet and venturi, a Delrin internal check valve and a stainless spring steel check valve spring, all of which are very water resistant and very strong. The mechanical seal has a carbon fixed seal face, a ceramic rotating seal face, and a 304 stainless steel spring for reliable sealing performance. Nitrile rubber O-rings seal effectively throughout the pump assembly.
The combination of these carefully selected materials means less maintenance, resistance to corrosion and consistent hydraulic performance, making the XJ90P a reliable choice for household water supply, rainfall harvesting, pressure boosting and water transfer systems.
Installation Guide
The Davey XJ90P is suitable for easy installation in household water supply, pressure boosting, rainfall harvesting and water transfer applications. To ensure optimal operation, the pump should be installed on a firm, level surface inside a clean, dry, and well-ventilated area, with sufficient access for servicing and maintenance. The XJ90P must be used with a Davey Supercell Pressure Tank to enable proper automated pressure operation. Davey recommends the 24008P and 24018P variants.
All suction and discharge pipe work should be suitably designed and sealed to minimise air leaks and reduce friction losses inside the system. For installations with a suction lift more than 1 metre, a good foot valve is suggested. In such cases, for best operation, the internal suction side check valve of the pump should be removed before attaching the suction line.
The suction pipework must be entirely filled with water, via the priming port, before the pump is commissioned. After priming reinsert the priming plug firmly before powering on the pump. Proper priming is required to prevent dry running, maintain hydraulic efficiency and assure reliable operation.
The XJ90P is supplied by a 220–240V, 50Hz power supply and must be fitted according to all appropriate local plumbing and electrical laws. Regular inspection of the pipe connections, pressure settings and system components will help to maximise performance, reliability and service life.
Included In The Box
DynaJet Water Jet Pump – XJ90P
Pressure Switch
User Manual
Proof of Purchase
12 Months of Manufacturer Warranty
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