Davey's DynaJet Single Stage Water Jet Pump With Pressure Switch - XJ50P
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:
Davey's DynaJet Single Stage Water Jet Pump With Pressure Switch - XJ50P
The Davey XJ50P is a small, automated pressure pump designed to provide dependable water pressure for domestic water supply needs. The XJ50P is ideal for boosting pressure, water transfer or use with rainwater tanks. It is a jet assisted centrifugal pump operating automatically with a pressure switch and provides consistent performance.
The XJ50P is constructed with corrosion-resistant materials and a sturdy TEFC (Totally Enclosed Fan Cooled) motor for extended life and dependability in daily operation. Its economical design delivers up to 50 litres per minute with a maximum head of 46 metres, making it ideal for supplying many residential outlets at the same time.
The pump has a stainless-steel shaft, integrated check valve, adjustable pressure switch, and built-in thermal overload protection for consistent operation and minimum maintenance. Compact and easy to install, the Davey XJ50P is designed for autonomous operation and is a practical choice for homes who want stable water pressure and efficient domestic water management.
Method of Identification
The DynaJet water pump series are categorised with the abbreviation of the ‘XJ’ in alphabetical letter. This assortment becomes arranged for the chain of warehouses found across all assets of Davey Water Products Pty Ltd.
With this version, a serialisation of ‘XJ50P‘ can be found. Right after the abbreviated characters, a two-letter digits can be found that stands for 50, which describes the maximum flow rate that this centrifugal pump can produce in Litres per minute (LPM).
Aftwards, the serial code becomes banded with another alphabet of ‘P‘ at its end. This signifies for the Pressure Switch attachment, which can be found with this water pump upon purchase.
But more than important is its unique recognition in the years and decades to come, just so the DynaJet electropump can be repaired by tracing back its records of parts and components specific for this model. Besides that, this water pump also becomes recognised and unified throughout the world and across its supply chain because of its standardised identifier.
Attachment
The Davey XJ50P is offered as a pump unit and is intended to be connected with a Davey Supercell pressure tank for automatic pressure system operation. For a compact and convenient setup, Davey suggests the 24008P or 24018P Supercell pressure tanks that are designed to be installed directly on top of the pump.
For installations in suction lift applications, a suitable foot valve may also be required to ensure consistent priming and system functioning. The pump is equipped with an internal pressure switch and a check valve, so it doesn’t require extra controls to be installed.
Supercell Pressure Tank
The Davey Supercell Pressure Tank is designed to work in conjunction with the XJ50P pressure pump to assist even out water pressure in the system and reduce pump cycling. A tank holds a small volume of pressurised water to reduce frequent pump starts and pauses which can assist lengthen pump life and increase overall system efficiency.
Davey offers the Supercell 24008P or 24018P pressure tank for the XJ50P which can be neatly top-mounted directly onto the pump for a compact installation. The XJ50P and Supercell tank combo provides a reliable automatic pressure system for household water supply, pressure boosting and rainwater tank applications.
Supercell pressure tanks are a critical component in supplying smooth, steady water pressure while preserving the pump system from needless wear. They are built for durability and long-term performance.
Certification
The Davey XJ50P is built to internationally acknowledged ISO 9001 Quality Management and ISO 14001 Environmental Management systems, and also the Australian Standards which demonstrate Davey’s dedication to quality, consistency and environmental responsibility.
The pump is fitted with a TEFC motor rated IP55 for protection against dust and water ingress. The Class F insulation also provides increased thermal resistance, ensuring reliable performance in demanding domestic water supply applications.
ISO 9001: ISO 9001 specifies the DynaJet water pump’s requirements for a Quality Management System (QMS). With a goal to help organisations to consistently meet customer and regulatory requirements, this is continued by improving internal processes for the peak of manufacturing trait.
ISO 14001: For this accolade, the ISO 14001 helps organizations identify, manage, monitor, and improve their environmental performance. This aligns with the DynaJet centrifugal pump as raw materials are pre-planned, efficiently used while wastage are minimised and controlled for recyclable reasons, if any.
Standards Australia: Australian Standards are nationally recognized technical documents that set requirements and best practices for water pumps, systems, services, and processes in Australia. Developed by Standards Australia and in collaboration with industry experts, government agencies, and other stakeholders, this accreditation help ensure that pumps are:
- Safe to install and operate.
- Suitable for their intended application.
Reliable and durable. - Compatible with Australian plumbing and electrical systems.
- Compliant with health, environmental, and energy-efficiency requirements where applicable.
AS/NZS 4020 Tested: Often referred to as Australian Standard AS/NZS 4020, this is the testing of the DynaJet booster pump for use in contact with drinking water), which specifies how materials and products intended to come into contact with drinking (potable) water are tested to ensure they do not adversely affect water quality. For consumption reasons, it provides a verification that it does not affect an individual and/or any animal’s welfare and health, making the DynaJet safe to be continuously used for pressurised and eventual bathing or drinking reasons.
TEFC Motor
The Davey XJ50P features a Totally Enclosed Fan Cooled (TEFC) motor, an improved design that improves durability, dependability and long-term performance in household water pumping applications. Unlike open-frame motors, a TEFC motor is totally enclosed. This protects the internal electrical components from dust, dirt, moisture, insects and other airborne contaminants. This extra protection is especially advantageous to pumps that are put outdoors, in semi-exposed locations or in utility locations where the environment can impact the operation of the motor over time.
An external cooling fan is attached to the motor shaft to keep the motor temperature down. The fan continually blows air over the motor housing while the motor is running. This helps to dissipate heat, and also helps to ensure effective performance during numerous start-stop cycles. This form of cooling, along with the Class F insulation system of the motor and its built-in automatic thermal overload protection, serves to prevent the motor from overheating and electrical stress, therefore helping to prolong the service life and minimising the need for maintenance.
The TEFC motor on the XJ50P gives homeowners dependable day-to-day performance, quieter operation, better resistance to environmental conditions and more overall reliability. Consequently, the XJ50P is ideal for domestic water supply, pressure boosting, rainwater harvesting and automatic water transfer systems.
Inlet And Flange Connection
The Davey XJ50P is fitted with 1” BSP female inlet and outlet connections, making it suitable for many domestic water supply installations and plumbing systems. The conventional BSP threaded connections make it easy to connect to the pipes, valves, fittings and pressure tank combinations typical of residential applications.
The pump input connection is designed to give efficient water intake for reliable priming and performance, while the outlet connection supplies pressurised water to the household distribution system. For installations involving suction lift an appropriate foot valve may be connected to maintain prime and enhance pump operation. The standardised connection sizes make installation and maintenance easy and the XJ50P is a cost-effective solution for both new and replacement pump installations.
Volute
The volute shell of the Davey XJ50P is made from glass filled Noryl, an engineering thermoplastic chosen for its high strength, corrosion resistance and dimensional stability. This lightweight, sturdy structure protects the internal hydraulic components of the pump as well as providing consistent performance in residential water supply and pressure boosting applications.
The volute casing is the part of the pump’s centrifugal hydraulic system with jet assistance. It efficiently directs water from the impeller to the discharge outlet, turning velocity into pressure to provide a smooth and steady flow of water. Unlike standard metal casings, the glass-filled Noryl design is resistant to rust, scale and corrosion, making it particularly ideal for rainwater, tank water and ordinary domestic water systems.
The volute casing is designed with strength to increase the reliability of the XJ50P. It also helps to keep hydraulic efficiency and reduce the need for maintenance, allowing long-term operation in a wide range of residential applications.
Impeller And Diffuser
The Davey XJ50P has a glass filled polycarbonate impeller and a precision constructed jet and venturi diffuser system made of tough acetal materials. This combination is the basis of the pump’s jet assisted hydraulic design allowing it to efficiently transport water and create pressure for home water supply applications.
The impeller is the part of the pump that takes the energy from the motor and puts it into the water, speeding the water up as it goes through the pump and creating the pressure needed to make sure houses get a reliable supply of water. Made of glass-filled polycarbonate, the construction offers strength, dimensional stability, and resistance to wear and corrosion to provide long-lasting performance in challenging working environments.
The impeller works with the diffuser, jet and venturi components to optimise the flow of water through the pump to improve the pump’s suction performance and hydraulic efficiency. The jet assisted design ensures the XJ50P maintains constant pressure and reliable operation, making it ideal for applications such as water pressure boosting, rainwater harvesting and residential water transfer systems.
Single Stage Closed Vane Impeller Design
The Davey XJ50P features a single stage closed vane impeller design, designed for efficient production of water flow and pressure for home water supply applications. The vanes are surrounded by front and rear shrouds. This allows the water to flow smoothly through the impeller channels while reducing hydraulic losses and enhancing overall efficiency.
The impeller is made from glass filled polycarbonate for great strength, rigidity, corrosion and wear resistance. This choice of material also helps to ensure the hydraulic performance is maintained over time, while making the pump light and durable.
The closed vane impeller design of the XJ50P’s jet-assisted centrifugal pump, in conjunction with the jet and venturi system, provides dependable suction capability, stable water pressure and smooth flow characteristics. The outcome is reliable performance for home applications such as pressure boosting, rain water harvesting and domestic water transfer.
Backplate And Mechanical Seal
The Davey XJ50P features a mechanical shaft seal designed to stop water from leaking between the pump wet end and motor for reliable, efficient operation. The mechanical seal is designed to provide a reliable seal under variable pressure situations. This is vital to prevent the motor from moisture incursion and to preserve hydraulic performance.
The seal assembly features a carbon stationary seal face, ceramic rotating seal face and 304 stainless steel spring for a strong combination of wear resistance, corrosion prevention and long service life. Only high-quality materials are selected that can survive prolonged operation in domestic water supply, pressure boosting and rainwater harvesting installations. The mechanical seal minimises leakage and reduces wear on important components, contributing to the XJ50P’s reduced maintenance requirements, reliable performance and long-term operational reliability.
Primarily, what further separates the electrical section (engine compartment) and where the swirls of hydration within its volute is a singular piece of a backplate (also called a seal plate, mounting plate, or adapter plate) that holds the whole DynaJet water pump in shape. It is also this very component available that supports the mechanical seal, preventing water from leaking along the pump shaft, and a back pull-out design using a rotating assembly to remove its motor, shaft, impeller, and backplate without disconnecting the DynaJet’s pump casing (in entirety) from the piping.
O-Ring And Spacer
Throughout the pump assembly of the Davey XJ50P, nitrile rubber O-rings are used to create reliable seals between matching components and assist prevent water loss under operating pressure. These O-rings provide tight seals around the casing and internal components to help protect the pump’s hydraulic integrity and also help make it easier to service and maintain as needed.
Precision-engineered spacers and internal components support the sealing arrangement and ensure precise alignment and positioning of the pump’s revolving and stationary elements. These parts, working together, help to reduce wear, keep sealing performance high and promote smooth, efficient pump operation over time. Durable materials and excellent sealing elements are applied to the XJ50P to ensure its durability, low maintenance and constant performance in domestic water supply and pressure-boosting applications.
Meanwhile, every integral parts lying internally of the DynaJet water pump is separated by spacers for spacious operation. These rotating parts, such as the impellers, are purposefully divided due to its moving forces which the spacer within acts as a mediator to reduce friction.
XJ50P DynaJet Water Pump's Operating Limits
The Davey XJ50P is designed to operate within set operating parameters to ensure dependable and efficient operation in domestic water supply and pressure boosting applications. Able to deliver flow rates up to 50 litres per minute and a maximum total head of 46 metres, the pump is suited for a wide range of home water systems. Factory configured cut-in pressure is 180 kPa and cut-out pressure is 390 kPa for automatic on demand operation. If suitably placed the pump can handle water temperatures up to 50°C, ambient temperatures up to 55°C and suction lifts of up to 7 metres. Operating within these limits helps you get the most performance, efficiency and life from the pump.
| Operating Limits | |
| Capacities to | 50 lpm |
| Maximum total head | 46m / 150.92 ft |
| Cut-in pressure (factory setting) | 180 kPa |
| Cut-out pressure (factory setting) | 390 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 |
DynaJet Water Pump's Dimensions
The Davey XJ50P is space-saving and may be installed flexibly in the domestic water supply and pressure boosting systems. The pump is space efficient with overall dimensions of 430 mm (length) × 124 mm (width) × 146 mm (height) and a net weight of 9.0 kg, yet provides the durability and performance required for ordinary home applications. Due to its compact design, the unit can be used with pressure tanks and pump enclosures when space is limited.
| 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
The Davey XJ50P is designed to provide reliable hydraulic performance for domestic water supply and pressure boosting applications. The pump has a maximum flow rate of 50 litres per minute and a maximum head of 46 metres, ensuring a continuous pressure and flow of water for ordinary domestic needs. The jet-assisted centrifugal design improves the suction capacity and the overall efficiency, providing reliable performance under different water usage scenarios. The XJ50P is pre-set to 180 kPa cut-in pressure and 390 kPa cut-out pressure, enabling it to work automatically and to respond efficiently to variations in system demand. The performance features of the XJ50P make it suitable for applications like household water supply, rainwater collecting and pressure boosting systems where stable water supply is necessary.
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 XJ50P is constructed from a variety of tough, corrosion-proof materials to give a long service life and reliable performance in residential water supply applications. The pump has a glass filled polycarbonate impeller and glass filled Noryl pump housing that provides increased strength, dimensional stability and resistance to wear and corrosion. The pump shaft is made of 303 stainless steels with the shaft sleeve made of brass for increased strength.
The jet, venturi, check valve and other internal hydraulic components are made from high performance engineering thermoplastics while the check valve spring and seal spring are stainless steel for better corrosion resistance. The mechanical seal assembly employs a carbon and ceramic sealing face for dependable sealing and long operational life. Throughout the pump are nitrile rubber O-rings to provide tight sealing and reduce leakage under pressure.
Materials have been chosen carefully to make sure that the XJ50P is a light weight, low maintenance and reliable unit for a wide range of residential applications such as pressure boosting, rain water collection and domestic water supply.
Installation Guide
The Davey XJ50P is designed for simple installation and is ideal for home water supply, pressure boosting and rainwater harvesting systems. For best performance, mount the pump on a solid, level surface in a well-ventilated area that is free from flooding and extreme environmental exposure. The pump needs to be used with a compatible Davey Supercell pressure tank such as the 24008P or 24018P to operate as an automatic pressure system.
All connections in suction pipes must be airtight to prevent air leaks, which can impact priming and performance. Davey advises the fitting of a quality foot valve for instances where the suction lift is greater than 1 metre. In these setups, the internal check valve on the suction side of the pump should be removed before attaching the suction line.
Prime the pump and suction line completely before starting up by filling with clean water through the priming inlet. Once primed reinstall the priming plug and turn the pump on. Proper priming is critical to reliable operation, to protect pump components and to achieve the anticipated hydraulic performances.
220–240V, 50Hz. The XJ50P must be installed in line with local electrical standards and the manufacturer’s installation instructions. Proper installation and regular checks of pipes, valves and pressure settings will greatly enhance system efficiency, dependability and service life.
Included In The Box
DynaJet Water Jet Pump – XJ50P
Pressure Switch
User Manual
Proof of Purchase
12 Months of Manufacturer Warranty
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