Davey HM Series Pump with Torrium2 Controller - Multistage Stainless Steel, Constant Pressure NZ

The Davey HM Series with Torrium2 controller is a horizontal multistage constant pressure system built for household water supply, farming, irrigation, and turf watering. All hydraulic parts are stainless steel for corrosion resistance and long service life.

The Torrium2 controller is adaptive — it eliminates pump cycling, maintains constant flow across varying demand, and provides loss of prime protection and over-temperature cut out. No pressure tank is required for normal operation, though additional tanks can be added if site conditions require greater draw-off capacity.

Available in eight models across three flow families — HM60, HM90, and HM160 — to suit homes and properties from standard residential through to large lifestyle blocks. Select your model from the dropdown.

Tested in compliance with AS/NZS 4020 for use in contact with safe drinking water. Manufactured under ISO 9001 quality management and ISO 14001 environmental management systems.

Professional installation by a licensed plumber is recommended.

Key specs at a glance

• Pump type: Horizontal multistage centrifugal
• All hydraulic parts: 304/316L stainless steel
• Controller: Torrium2 (fitted), 220–240V, IP56, 50/60Hz
• Voltage: 230V ±10%, single phase
• Max continuous flow: 200 lpm
• Max operating pressure: 700 kPa
• Max water temperature: 65°C
• Enclosure: IP55 (HM60-06T, HM60-08T, HM60-10T, HM90-08T, HM90-11T) / IP56 (all other models)
• Insulation class: F
• Warranty: 2 years

Choosing your model

The HM Series is divided into three flow families. Start by choosing the family that matches your household flow demand, then select the pressure variant that suits your property's head requirements.

HM60 family — 60 lpm nominal flow
Suits standard homes with moderate simultaneous demand.
HM60-06T: 0.58 kW (P2), nominal operating pressure 280 kPa, max pump pressure 460 kPa
HM60-08T: 0.72 kW (P2), nominal operating pressure 360 kPa, max pump pressure 575 kPa
HM60-10T: 0.94 kW (P2), nominal operating pressure 430 kPa, max pump pressure 690 kPa

HM90 family — 90 lpm nominal flow
Suits larger homes or properties where multiple outlets run simultaneously.
HM90-08T: 0.78 kW (P2), nominal operating pressure 310 kPa, max pump pressure 460 kPa
HM90-11T: 1.05 kW (P2), nominal operating pressure 420 kPa, max pump pressure 585 kPa
HM90-13T: 1.40 kW (P2), nominal operating pressure 480 kPa, max pump pressure 680 kPa

HM160 family — 160 lpm nominal flow
Suits large homes, lifestyle blocks, and high-demand rural properties.
HM160-15T: 1.50 kW (P2), nominal operating pressure 340 kPa, max pump pressure 460 kPa
HM160-19T: 1.80 kW (P2), nominal operating pressure 400 kPa, max pump pressure 600 kPa

Within each family, choose a higher-numbered variant if your property has significant elevation difference between the pump and the highest outlet, long pipe runs, or you need higher operating pressure.

Not sure which model suits your property? Get in touch and we'll help you choose.

Why Kiwi homeowners choose the Davey HM Series

• All hydraulic parts in 304/316L stainless steel — corrosion resistant and suited to a wide range of water conditions
• Torrium2 controller eliminates cycling — no on/off switching under varying demand
• Loss of prime and over-temperature protection built into the Torrium2
• Axial suction and vertical discharge — compact footprint, easy to install in tight spaces
• TEFC motor with sealed, greased-for-life bearings — economical and quiet running
• Thermal overload protection with automatic reset on single-phase models
• Tested to AS/NZS 4020 for use in contact with drinking water
• 2-year warranty backed by Davey's NZ dealer network

How it works

The HM Series uses a horizontal multistage centrifugal pump with impellers mounted directly on an extended motor shaft — this maximises performance per stage, reduces mechanical complexity, and increases wear resistance. Stainless steel impellers with high-efficiency profiles and thick self-centring neck rings keep power consumption low and noise output down.

The Torrium2 controller monitors system pressure continuously. Rather than switching the pump on and off as demand changes, it adapts pump output to maintain a consistent flow — eliminating the pressure fluctuations that come with cycling. If the pump loses its water supply, the Torrium2 shuts it down to prevent damage.

An air purging valve and stage porting design make priming easier and reduce susceptibility to air leaks — particularly useful on tank water installations.

Full technical specifications

Common specs (all models): 230V ±10%, single phase, 50Hz | Pump speed 2,900 rpm | Max continuous flow 200 lpm | Max operating pressure 700 kPa | Max water temperature 65°C | 304/316L stainless steel hydraulic parts | Carbon/ceramic mechanical seal | EPDM O-rings | Torrium2 controller fitted, IP56 | Tested to AS/NZS 4020 | ISO 9001, ISO 14001 | 2-year warranty

What's in the box

• 1 × Davey HM Series pump (model per selection)
• Torrium2 controller (fitted)
• Installation and warranty documentation

Note: pressure tank not included. Additional tanks can be added if site conditions require greater draw-off capacity — get in touch for options.

FAQ

How do I choose the right model?

Start with flow — HM60 for standard homes, HM90 for larger homes with higher simultaneous demand, HM160 for large properties and lifestyle blocks. Then choose the pressure variant based on your property's head requirements: elevation difference between pump and highest outlet, length of pipe runs, and desired operating pressure all affect which variant is right. Get in touch if you want help working through the numbers.

What does the Torrium2 controller do?

The Torrium2 is an adaptive controller that maintains constant flow by modulating pump output to match demand — rather than cycling the pump on and off. It also provides loss of prime protection and over-temperature cut out. This means consistent pressure at every outlet and protection against dry running.

Does it come with a pressure tank?

No — the Torrium2 controller eliminates the need for a tank under normal conditions by adapting pump output to demand. A pressure tank can be added if your site has conditions that require greater draw-off capacity. Get in touch if you're unsure whether your installation needs one.

Can I use it with rainwater or tank water?

Yes. The HM Series is suitable for clean, clear water supplies including tank and rainwater. The air purging valve and stage porting design make priming easier on tank water installations. A pre-filter upstream is recommended if your water has high sediment or turbidity.

What is the maximum water temperature?

65°C. The HM Series is designed for standard cold and warm water supply — not for hot water recirculation.

How loud is it?

The TEFC motor with sealed, greased-for-life bearings is designed for economical and quiet running. Torrium2 operation also reduces noise compared to conventional cycling pumps by avoiding abrupt on/off switching.

Do I need a plumber to install it?

Yes — professional installation by a licensed plumber is recommended. The pump connects via BSP fittings and needs to be correctly integrated with your water supply system.

Can I pair it with a water filter?

Yes. A whole-house filter installed upstream protects the pump from sediment and extends its service life. Get in touch for filter recommendations suited to your water source.

What warranty applies?

2 years, backed by Davey's NZ dealer network.