Davey's Horizontal Multistage Water Pump With Torrium2 - HM90-13T
Key features:
- Standard automatic pressure system type.
- Suitable for larger households (5-7 shower heads with 8-10 pipes).
- For household, garden, farming, and agricultural use.
- 24 months warranty for pump, motor & controller.
(24 + 6 additional months with e-Warranty scheme) - Fixed pressure setting on every usage.
- Easy installation, no setting required.
Classified As:
Overview of Davey's Horizontal Multistage Water Pump With Torrium2 - HM90-13T
Ideal for household water supply and water boosting in residential buildings of up to three storeys, the Horizontal Multistage Water Pump from Davey delivers reliable, consistent water pressure for everyday use. Equipped with multiple impellers arranged in series, water pressure at each stage gradually increases to push hydration across the required piping and floors. The Horizontal Multistage Water Pump gets its name from its horizontal configuration, with multiple impellers arranged in series inside the pump to deliver increased water pressure.
The HM Series is the commonly used abbreviation for Davey’s Horizontal Multistage range of centrifugal pumps among authorised dealers and users worldwide. Featuring premium hydraulic components for efficient pressurised water transfer and a corrosion-resistant alloy composite housing, these pumps are built for reliable, long-term performance. Entry-level models are well suited for household water supply and garden irrigation, while the mid- and high-range models provide the power and capacity required for agricultural and commercial use.
HM90-13T's Method of Identification
To maintain consistency across global markets, Davey Water Products adopts a standardised product coding system. Each electropump model code typically includes:
- Series abbreviation
- Flow rate designation
- Motor power rating (kW)
- Voltage phase configuration
Using the model code HM90-13T as an example, HM identifies the pump as part of Davey’s Horizontal Multistage series. The number 90 indicates a maximum flow rate of 90 litres per minute (L/min), while 13 denotes the motor power output of 1.3 kW. The suffix T signifies that the pump is fitted with a Torrium2 pressure controller, enabling automatic pressure control for convenient and reliable operation.
Beyond identifying the pump model, the product code plays an important role in Davey’s warehouse operations. It helps staff quickly locate the correct water pump for order fulfilment, streamlines inventory management, and ensures every product is organised using a consistent coding system across warehouse shelves and storage locations. This systematic approach improves efficiency and makes water treatment products easy to identify throughout Davey’s inventory network.
Attachment
Torrium2
As an important component for the longevity of one’s water pump, the Torrium2, may be fitted to Davey’s HM90-13T. Designed as an electronic smart controller, it regulates water flow to maintain consistent pressure in residential and commercial buildings. The pump is automatically triggered when a pressure drop occurs and stops when the flow rate reduces to approximately 1 litre per minute (LPM), ensuring efficient operation.
The Torrium2 helps minimise unnecessary pump cycling by regulating the start and stop cycles of the Horizontal Multistage electropump. Its built-in control mechanism ensures gradual acceleration and deceleration, reducing water hammer, a hydraulic shock resulting from abrupt flow changes that can lead to damage in piping, fittings, and system components.
Strong Starting Pressure: The Torrium2 uses an intelligent pressure sensor to start the pump when system pressure falls to around 80% of peak pressure. It records peak pressure each time the pump stops, allowing automatic adjustment to the connected pump’s performance.
Adaptive Start Function: To minimise unnecessary pump cycling caused by leaks, the Torrium2 distinguishes between actual water demand and minor leakage, including small tap drips. When very low flow is detected, the controller lowers its start pressure threshold to 50% of the previously recorded pressure, preventing unnecessary pump activation. Normal operation resumes once flow exceeds 0.5 litres per minute (LPM), at which point the Horizontal Multistage pump is started as required.
Dry-Running Protection: Designed for continuous water supply, the HM90-13T pump is protected by the Torrium2’s intelligent dry-running detection system. If a loss of prime is detected in the Horizontal Multistage centrifugal pump, the system shuts down the pump instantly to prevent damage. To minimise downtime, automatic restart attempts are made after 5 and 30 minutes, then at 1, 2, 4, 8, 16, and 32-hour intervals. Once water supply and pressure return to normal, the pump restarts automatically and resumes operation.
Mechanical Pressure Switch
A mechanical pressure switch can be fitted to Davey’s Horizontal Multistage pump to control operation according to preset pressure thresholds.
Trigger and Shutdown Function: The switch activates or deactivates the electropump when system pressure drops below or exceeds the configured cut-in and cut-out levels, ensuring stable system pressure.
Adjustable Pressure Settings: Users can adjust the pressure settings to match system requirements. Correct configuration helps maintain consistent pressure, reduce pump stress, and improve operating efficiency while limiting pressure surges and drops that may affect plumbing components.
Resource and Energy Conservation: When fitted with a mechanical pressure switch, the HM90-13T Horizontal Multistage pump operates only when system pressure falls below the set level, helping reduce water and energy consumption. This demand-based operation minimises unnecessary running, reduces wear, and may extend service life.
Model Identification: Pumps with a mechanical pressure switch are identified by the suffix “P” in the model code, for example HM270-19P.
Pressure Tank
An optional pressure tank can be added to Davey’s Horizontal Multistage water pump to improve booster system efficiency. By storing water under pressure, it reduces frequent pump start and stop cycles, helping deliver smoother and more consistent system performance.
Diaphragm Function: Inside the pressure tank, a flexible diaphragm separates air from water, ensuring stable pressure conditions and reliable operation. This separation also helps prevent cavitation, protecting the pump and system components from potential damage caused by air-water mixing.
An optional pressure tank can be added to Davey’s Horizontal Multistage water pump to improve booster system efficiency. By storing water under pressure, it reduces frequent pump start and stop cycles, helping deliver smoother and more consistent system performance.
Diaphragm Function: Inside the pressure tank, a flexible diaphragm separates air from water, ensuring stable pressure conditions and reliable operation. This separation also helps prevent cavitation, protecting the pump and system components from potential damage caused by air-water mixing.
Certification
As part of its market entry strategy into Malaysia and wider Southeast Asia, Davey certifies that its Horizontal Multistage centrifugal pumps comply with relevant global standards and regulations, ensuring dependable safety, performance stability, and high manufacturing quality for residential, commercial, and controlled water applications.
SGS Testing: Through certification and testing by Société Générale de Surveillance (SGS), the HM water pump series is validated against essential electrical safety standards for home use. This includes rigorous assessment of potential hazards such as electric shock, electrical faults, and fire risks, as well as confirmation that the enclosure and internal components are safely insulated and securely contained.
European Standards: By meeting European Standards, the Horizontal Multistage pump is aligned with unified technical and safety criteria throughout Europe. This includes requirements for safety assurance, reliable performance, environmental compliance, and seamless compatibility across different markets.
International Electrotechnical Commission (IEC): IEC standards, developed by the International Electrotechnical Commission, define global benchmarks for electrical and electronic systems. Davey’s adherence to these standards confirms that its pumps meet internationally accepted levels of safety and performance, facilitating global market access and trade compatibility.
Australian Standards: Davey, as a manufacturer rooted in Australia, complies with Australian Standards that specify safety and performance requirements for electrical and pumping equipment. These standards are independently regulated to ensure product reliability and user safety.
- AS/NZS 4020:2005: Meeting AS/NZS 4020:2005 requirements, all materials in contact with drinking water are verified as safe for potable use. The Horizontal Multistage pump is tested to ensure it maintains water purity by preventing harmful substance leaching.
New Zealand Standards: Compliance with New Zealand Standards further confirms product safety and suitability for potable water systems, supporting acceptance across Oceania markets.
ISO 9001: ISO 9001 certification ensures Davey maintains consistent pump manufacturing processes, controlled production standards, and uniform product quality across all batches. This is especially true for the Horizontal Multistage electropump when it’s lean manufacturing-practised with automated creation.
ISO 14001: Demonstrates Davey’s strong commitment to environmental stewardship through sustainable manufacturing practices, including energy efficiency improvements, waste reduction, recycling programs, and responsible use of resources throughout production and distribution.
Alongside other certifications, this ensures the HM90-13T Horizontal Multistage centrifugal pumps meet globally recognised standards for safety, quality, and environmental care—enhancing trust and acceptance in international markets.
Fixed Speed Motor Pump
Steady and reliable water pressure is delivered by the HM90-13T Horizontal Multistage pump from Davey for everyday use. Smooth and consistent flow is ensured by its centrifugal design, even as demand conditions change, making it suitable for homes and commercial spaces.
Setup is made simple and hassle-free. The pump is typically installed below the water tank, where it is connected to the piping and then powered on. From there, it is operated as part of the water system with minimal configuration required, allowing for an easy and efficient solution.
200 Starts Per Hour: More than 200 starts per hour can be handled by certain models of Davey’s HM90-13T Horizontal Multistage pump, demonstrating strong cycling durability under variable demand conditions. Reduced mechanical stress in systems with frequent on/off operation is supported by this capability. However, this specification is applicable only to selected Horizontal Multistage pump models.
Reliability: Long-term use of the Horizontal Multistage pump range has been supported by established mechanical engineering design principles. Reliability is reinforced through extensive research and development activities, an established service network, and the availability of spare parts, which together support ongoing maintenance and operational continuity.
Cost-Cutting: Efficient operation is enabled through a system design requiring minimal adjustment following installation. Scalable manufacturing and distribution are supported through streamlined production processes and an established supply chain, allowing Davey’s Horizontal Multistage water pump to be produced and delivered at scale. Cost-effective application is enabled across residential, agricultural, and commercial water supply systems.
HM90-13T Household Infographic
A visual guide has been developed by Davey Malaysia’s engineers to identify water pump requirements for landed residential properties. The HM90-11 series of Horizontal Multistage pumps, based on the DynaDrive DD90 platform, supports 2–3 storey homes and is suitable for approximately 5–7 shower heads or 8–10 water outlets.
Inlet Sizing
The suction inlet allows water to enter a pump for pressurisation, with operation varying by centrifugal pump type. In sump pumps, wastewater or sewage may be processed using grinders or strainers to remove debris for flood control and wastewater management.
In contrast, Davey’s HM90-13T Horizontal Multistage pump is designed for clean water only and is used in home pressure systems where the supply is free from solids.
One-Directional Flow: A unidirectional flow is created by the HM90-11T Horizontal Multistage pump, where the electrical motor generates pressure differences that draw water into the system. Water is then guided toward the impeller section, where it is progressively pressurised through multiple stages.
Inlet Size: Horizontal Multistage electropumps are produced with varying inlet sizes to ensure compatibility with residential and commercial piping systems, supporting balanced flow and preventing overflow or restriction issues. Where pipe and inlet sizes differ, suitable connectors or adapters can be used to ensure a secure connection.
Net Positive Suction Head (NPSHr): Stable performance of Davey’s Horizontal Multistage water pump is ensured when proper suction conditions are maintained and air pockets are eliminated from the system. Net Positive Suction Head (NPSH) governs this requirement, ensuring that water is supplied at sufficient pressure for smooth operation and protection against cavitation.
Flow Efficiency: Flow resistance is reduced in centrifugal pumps with larger inlet diameters, enabling more efficient fluid entry into the system. This enhances suction performance and promotes smoother hydraulic operation. The reduction in resistance also facilitates faster stabilisation of flow conditions during pump start-up, improving system efficiency.
| 240V Single Phase Models | ||
|---|---|---|
| Product Code | Ports | |
| Suction BSP | Discharge BSP | |
| HM90-13 | 1.25 inch (31.75mm) | 1 inch (25.4mm) |
Stainless Steel Volute
A durable, polished composite metal volute is incorporated within the HM90-13T Horizontal Multistage water pump. While enclosed by a cylindrical outer housing, the volute is internally formed with a spiral geometry to accommodate the multistage impeller and diffuser assembly.
This proven design contributes to several important performance benefits:
Flow Enhancement: Designed with a precision spiral volute, the system smoothly guides and accelerates water through each stage for maximum flow efficiency. The result is reduced turbulence and consistently reliable discharge performance.
Protective Casing: The durable volute casing not only enhances performance but also protects the pump from external debris and contamination, ensuring long-lasting reliability and clean water output.
Interchanging Energy States: In a horizontal multistage pump, the electric motor initiates suction, drawing water into the system. The fluid then moves through successive impellers where kinetic energy is progressively added. Centrifugal force drives the water outward toward the casing, guiding it through the volute before discharge.
Throughout this process, kinetic energy is converted into pressure energy. As the volute chamber fills, fluid velocity decreases while pressure increases, in accordance with Bernoulli’s principle.
Self-Priming Condition and Cavitation Risk: When the volute casing is fully charged with water, entrained air is eliminated from the system, establishing stable operating conditions and maintaining effective priming in horizontal multistage pump operation.
Ingress of air into the impeller section may disrupt hydraulic continuity and induce cavitation, potentially leading to degradation or failure of internal components during service.
Impeller And Diffuser
A durable, polished composite metal volute is incorporated within the HM90-13T Horizontal Multistage water pump. While enclosed by a cylindrical outer housing, the volute is internally formed with a spiral geometry to accommodate the multistage impeller and diffuser assembly.
This proven design contributes to several important performance benefits:
Flow Enhancement: Designed with a precision spiral volute, the system smoothly guides and accelerates water through each stage for maximum flow efficiency. The result is reduced turbulence and consistently reliable discharge performance.
Protective Casing: The durable volute casing not only enhances performance but also protects the pump from external debris and contamination, ensuring long-lasting reliability and clean water output.
Energy Conversion: The motor draws water into the pump, where it passes through multiple impellers and gains energy before being directed into the volute and discharged.
Kinetic energy is converted into pressure energy, with velocity decreasing and pressure increasing as the volute fills.
Once fully filled with water, trapped air is removed and the pump operates in a stable, self-primed state. If air enters the impeller section, it can disrupt flow and cause cavitation, potentially damaging internal components.
Self-Priming Condition and Cavitation Risk: A fully water-filled volute casing removes entrained air from the system, establishing stable operating conditions and maintaining effective priming in horizontal multistage pump systems.
Air ingress into the impeller section may disrupt flow continuity and induce cavitation, potentially resulting in damage or degradation of internal components during operation.
Closed Impeller Design
Closed Impeller Design: Closed impellers are fitted on the shaft to help move water more efficiently inside the pump. This also reduces the pushing force along the shaft, making the pump run more smoothly.
Improved Hydraulic Performance: A double-shroud closed impeller guides water smoothly through the vanes, ensuring stable discharge and higher hydraulic efficiency.
Cavitation Reduction: The impeller geometry is engineered to reduce cavitation potential by stabilizing internal flow conditions and minimizing vapor bubble formation and collapse. This enhances protection of Davey’s Horizontal Multistage pump against pressure-induced damage.
Extended Service Life: Minimisation of thrust load and mechanical stress on rotating components, including bearings and shaft assemblies, results in reduced wear rates. This improves operational reliability, decreases maintenance requirements, and extends service life of the horizontal multistage centrifugal pump.
Stainless Steel Construction: Stainless steel is employed in critical components such as the impeller and diffuser of the horizontal multistage water pump to resist corrosion and material degradation from continuous fluid contact. This supports sustained durability and stable operational performance.
Smooth Surface Finish: The impeller undergoes a precision polishing process prior to assembly to minimize surface roughness. The improved surface finish reduces hydraulic friction and flow turbulence, enhancing fluid transfer efficiency while lowering energy losses and power consumption (kW).
Thermal and Mechanical Stability: The use of high-grade stainless steel provides excellent thermal and mechanical stability across a broad operating temperature range. Minimal thermal expansion preserves impeller dimensional integrity, supporting consistent performance in hot and cold clean water applications involving both elevated and reduced temperatures.
Backplate And Mechanical Seal
The backplate and mechanical seal keep water from entering the motor area. Together with a gasket or washer, they seal the gap between the pumping section and the motor, helping prevent electrical damage and keeping the pump operating safely.
Flow Direction and Discharge: As the pump runs, centrifugal force moves water through the internal stages and out through the discharge outlet, providing a smooth and steady water supply.
Shaft Support and Alignment: Proper alignment of the rotating shaft is maintained by the backplate and mechanical seal throughout pump operation. Structural support and rotational stability are provided to minimise vibration, reduce the risk of misalignment, and maintain mechanical balance, ensuring smooth and reliable operation of the horizontal multistage pump.
Circlip Function and Design Variation: In certain horizontal multistage pump configurations, a circlip—identified as a clip spring in Davey Water Products’ official documentation—is fitted between the backplate and the mechanical seal. Secure retention of the sealing assembly is achieved while rotational stresses are accommodated, allowing the mechanical seal to remain properly enclosed during operation.
O-Ring And Spacer
O-Ring Sealing: Internal sealing between adjoining components is achieved using O-rings to provide a secure fit and minimise the risk of fluid leakage within the horizontal multistage electropump. EPDM (ethylene propylene diene monomer) rubber is typically selected due to its excellent resistance to heat and continuous water exposure. Compared with neoprene, improved performance under elevated temperature conditions is provided, making EPDM well suited for use in Davey’s Horizontal Multistage water pump systems. These sealing elements are commonly installed within the volute casing.
Spacer Function: Correct alignment and separation of rotating components are maintained by spacers installed throughout the pump assembly. Direct contact between adjacent parts is prevented, reducing friction, mechanical wear, and the likelihood of premature component failure.
Additionally, correct bearing location and internal component alignment are maintained through the use of spacers. Mechanical loading is distributed more evenly, reducing the likelihood of excessive compression, misalignment, and premature component wear during operation.
Vibration Reduction: Proper component spacing and alignment are maintained by spacers throughout the pump assembly. As a result, mechanical loads are distributed more uniformly, vibration transmission is reduced, and unnecessary stress on bearings and other rotating components is minimised during operation.
Materials of Construction: Internal components of the Horizontal Multistage water pump are constructed using SUS304 stainless steel to ensure durability, corrosion resistance, and mechanical stability. Critical parts, including impellers, mechanical seals, spacers, circlips, and volute casing assemblies, are manufactured to withstand continuous exposure to clean water service conditions.
On the other hand, the pump shaft is made from SUS316 stainless steel which delivers excellent corrosion resistance and high mechanical strength. This ensures reliable power transmission from the motor to the hydraulic stages, even under continuous operation and demanding load conditions.
Operating Limits of HM90-13T Horizontal Multistage Pump
| Operating Limits | |
| Maximum continuous flow rate | 200L / min (53 US gallons) |
| Maximum operating pressure | 700 kPa* (102 psi) |
| Maximum current | 10 amp |
| Cut-in pressure range | 80% of pump shut-off head |
| Maximum water temperature | 65°C (149°F) |
*Maximum operating pressure of up to 820 kPa may be achieved depending on the optional tank pressure rating.
* “L” is the standard symbol for litre.
*kPa (kilopascal) represents a derived unit of pressure in the SI system.
*psi (pounds per square inch) is a widely used non-SI unit of pressure.
*Ampere may be abbreviated as “Amp” or represented by the symbol “A”.
*Temperature is measured in degrees Celsius (°C), while Fahrenheit (°F) is used in the United States customary system.
Hydraulic Performance of Horizontal Multistage Pump With Torrium2
| Single Phase Models | HM90 |
| Motor:P1 kWP2 kW | HM90-13T – P1 kW: 1.7HM90-13T – P2 kW: 1.4 |
| Amps:RunStart | HM90-13T – Run: 7.2HM90-13T – Start: 40 |
| Ports (BSP):SuctionDischarge | All – Suction: 1.25 FAll Discharge – 1 M |
| Nominal operating pressure (kPa) | 480 |
| Maximum pump pressure (kPa) | HM90-13T: 680 |
| Tank air pre-charge (kPa) | HM90-13T: 475 |
| Nominal flow (L / min) | All in 90 L / min (24 US gallons) |
Hydraulic Loss of HM Pump With Torrium2
Electrical Data
| Pump | |
| Speed | 2900 rpm |
Supply voltage
| 230±10% 415±10% |
| Supply frequency | 50 Hz |
Enclosure class
| IP55 IP56 |
| Insulation class | Class F |
| Torrium2 | |
| Voltage | 220V-240V ± 10% |
| Phase | Single |
| Hz | 50 / 60 |
| IP rating | IP56 |
| Maximum load current | 10A |
| Maximum motor size @ 240V input | 1.8 kW |
| Surge protection | Varistor |
Materials of Construction
| Materials of construction | |
| Part | Material |
| Casing | 304 stainless steel |
| Impellers | 304 stainless steel |
| Stages (casing) | 304 stainless steel |
| Pump shaft | 316L stainless steel |
| Stage centring device | 304 stainless steel |
Mechanical seal:
| Carbon Ceramic 316 stainless steel EPDM |
| O-ring | EPDM |
| Plug | 316L stainless steel |
| Motor shell & lantern bracket | Aluminium with baked polyester powder coat finish |
| Motor feet | Xenoy |
| Fan cowl / rear foot (models up to 1.05kW) | Polypropylene |
Horizontal Multistage Pump's Q-H Curve For HM60 & HM90
Included In The Box
Horizontal Multistage Water Pump – HM90-13T
User Manual
Proof of Purchase
24 Months of Manufacturer Warranty (Increased by Another 6 Months with e-Warranty Scheme)
Downloads
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