DAVEY RAINBANK INSTALLATION
Davey KRB2 RainBank Installation Brisbane & Gold Coast
JR Gas & Water supplies and installs the Davey KRB2 RainBank rainwater harvesting system across eligible Brisbane, Gold Coast and surrounding South East Queensland service areas.
The Davey KRB2 is a surface-mounted automatic rainwater harvesting system combining Davey's RainBank controller with the HS50-06 horizontal multistage pump and a top-entry tank level switch.
The system is designed to prioritise stored rainwater for connected fixtures and automatically provide mains-water backup when rainwater becomes unavailable. Davey positions the KRB2 as a higher-pressure, higher-flow surface-mounted option suited to more demanding domestic installations including longer pipe runs and double-storey homes.
Davey KRB2 at a glance: HS50-06 surface-mounted pump, top-entry tank level switch, 46 L/min at 200kPa, automatic rainwater priority with mains backup, 0.89kW pump input, 0.60kW motor output, 3.8A full-load current, 220–240V single-phase supply, built-in RainBank backflow protection and current 36-month Davey RainBank warranty.
Davey KRB2 Supply & Installation at a Glance
46 L/min at 200kPa
Davey publishes approximately 46 litres per minute at 200kPa for the KRB2 RainBank package.
HS50-06 Pump
The standard KRB2 uses Davey's HS50-06 horizontal multistage surface pump.
Automatic Mains Backup
RainBank gives rainwater priority and automatically provides mains water when tank water is unavailable.
Higher-Pressure Application
Davey places the KRB2 in its higher-pressure and higher-flow category for more demanding domestic layouts.
What Is the Davey KRB2 RainBank?
The Davey KRB2 is a dual-source rainwater harvesting system designed to manage both tank water and mains-water backup automatically.
Its main components are the RainBank controller, HS50-06 surface-mounted pump and top-entry tank level switch.
When usable rainwater is available, the pump supplies the connected rainwater fixtures. When the tank reaches the low-water condition detected by the level-switch system, RainBank changes the connected fixtures over to mains water.
The system therefore performs a different role from a basic tank pump. It manages two water sources as part of one household rainwater-reuse arrangement.
What Can the Davey KRB2 Supply?
RainBank systems are designed for suitable rainwater-reuse applications such as toilets, laundry supply, garden irrigation, selected outdoor taps and other approved non-potable household uses.
Davey also lists broader rainwater-harvesting applications including domestic water supply, irrigation, farming and automatic general water transfer where the plumbing arrangement is appropriate.
The KRB2 is specifically positioned above Davey's lighter KRB1 arrangement because it provides additional pressure and flow capability.
The actual number of outlets that can operate satisfactorily still depends on pipework, elevation, fixture flow rates and how many outlets are used at the same time.
Why Choose the Davey KRB2?
Automatic Source Selection
RainBank automatically gives rainwater priority and switches to mains backup without requiring normal manual intervention.
46 L/min at 200kPa
The KRB2 delivers stronger published duty performance than the lighter KRB1 surface-mounted package.
Double-Storey Positioning
Davey's selection guide specifically places KRB2 among the systems suited to longer pipe runs and double-storey buildings.
Surface-Mounted Pump
The HS50-06 remains accessible outside the tank for servicing rather than being submerged inside the rainwater tank.
Built-In Backflow Protection
The RainBank controller incorporates a dual-check backflow-protection valve as part of its mains-water protection system.
Mains Supply During Power Loss
Davey designs RainBank so connected fixtures can continue receiving mains water when rainwater or electrical supply is unavailable.
PRODUCT SUITABILITY
Is the Davey KRB2 Right for My Property?
A Good Choice If...
You want automatic rainwater-to-mains changeover, prefer a surface-mounted pump and need more pressure or flow than a light-duty RainBank arrangement.
Consider the KRB1 If...
Your property is a lower-demand single-storey installation and does not require the additional hydraulic performance of the KRB2.
JR Should Check First If...
You have difficult tank access, long suction plumbing, substantial elevation, unusual mains pressure, non-standard backflow arrangements or several simultaneous rainwater outlets.
KRB2 Surface Pump and Top-Entry Float
The standard KRB2 is a surface-mounted, top-entry level-switch system.
The HS50-06 pump sits outside the rainwater tank, while the level-switch lead enters through the top of the tank to identify when stored rainwater is available.
Davey's current technical data publishes a 9 metre top-entry level-switch lead for the RainBank controller.
A separate KRB2NF floatless version is also available for suitable flooded-suction applications, but that is a different configuration and should not be confused with the standard top-entry KRB2.
Davey KRB2 vs KRB1
| Specification | KRB1 | KRB2 |
|---|---|---|
| Pump | HP45-05 | HS50-06 |
| Float Arrangement | Top entry | Top entry |
| Flow at 200kPa | 40 L/min | 46 L/min |
| Higher Pressure Category | No | Yes |
| Higher Flow Category | No | Yes |
| Typical Davey Positioning | Most single-storey homes | Longer pipe runs and double-storey homes |
The KRB2 should therefore be selected because the property benefits from its stronger hydraulic performance, not simply because it is the larger-numbered model.
HS50-06 Pump Performance
The KRB2 uses Davey's HS50-06 horizontal multistage pump.
The HS platform is designed as a compact four-stage centrifugal pump for domestic water pressure, irrigation, water transfer and pressure-boosting applications.
Davey's standalone HS50-06 hydraulic data shows maximum pump flow approaching approximately 80 L/min under low-head conditions, but once the pump is integrated through the RainBank controller the complete KRB2 package is rated at 46 L/min at 200kPa.
The RainBank system rating is the more relevant figure when assessing real KRB2 household performance.
Davey KRB2 Specifications
| Brand | Davey |
|---|---|
| System Model | KRB2 |
| Product Type | Automatic dual-source rainwater harvesting system |
| Installation Type | Surface mounted |
| Pump Model | HS50-06 |
| Pump Type | Four-stage horizontal centrifugal / multistage pump |
| Level Switch | Top entry |
| Published KRB2 Flow | 46 L/min at 200kPa |
| Higher-Pressure Category | Yes |
| Higher-Flow Category | Yes |
| Pump Input Power | 0.89kW |
| Pump Motor Output | 0.60kW |
| Pump Full-Load Current | 3.8A |
| Pump Locked-Rotor Current | 12A |
| Pump Speed | 2850rpm |
| Pump Electrical Supply | 220–240V / 50Hz single phase |
| Pump Enclosure Class | IP55 |
| Pump Insulation | Class F |
| Pump Inlet | 1¼" BSP female |
| Pump Outlet | 1" BSP female |
| Maximum HS-Series Suction Head | Approx. 6m under suitable conditions |
| Maximum Pumped Water Temperature | 50°C |
| Maximum Pump Ambient Temperature | 50°C |
| RainBank Mains Inlet | ¾" BSP male |
| RainBank Rainwater Inlet | 1" BSP male |
| RainBank Outlet | ¾" BSP male |
| RainBank Maximum Mains Flow | 100 L/min |
| RainBank Maximum Pump Flow | 100 L/min controller limit |
| RainBank Maximum Mains Pressure | 900kPa subject to local requirements |
| RainBank Maximum Pump Pressure | 600kPa |
| RainBank Maximum Pump Current | 10A |
| RainBank Supply | 220–250V / 50Hz |
| RainBank Enclosure Class | IP23 |
| RainBank Incoming Lead | Approx. 2m |
| Top-Entry Level-Switch Lead | Approx. 9m |
| Level-Switch Voltage | 12V DC |
| Wi-Fi | No |
| Current Davey RainBank Warranty | 36 months |
JR's live product currently displays 0.89kW and 46 L/min, which matches Davey's HS50-06 input-power and KRB2 system-flow data. JR also displays a 700kPa pressure field, but Davey's current RainBank technical sheet specifies 600kPa maximum pump pressure for the RainBank controller, so the manufacturer limit is used here.
Automatic Rainwater and Mains Changeover
The main purpose of RainBank is automatic water-source management.
Rainwater receives priority whenever the tank supply is available. When the rainwater supply is unavailable, the controller provides mains-water backup to the connected fixtures.
Davey also designs RainBank to provide mains supply during electrical interruption, so the household does not normally lose water to RainBank-connected fixtures simply because the pump has lost power.
This automatic changeover is the defining difference between a complete RainBank installation and a conventional pump-only tank system.
Built-In Backflow Protection
RainBank incorporates a dual-check backflow-protection valve as part of its mains-water protection arrangement.
Davey's current technical documentation identifies compliance with relevant AS/NZS 3500 plumbing requirements when the system is installed in accordance with the product instructions.
The system is also WaterMark licensed.
That does not eliminate the need for a compliant installation. The complete rainwater and mains-water connection still needs to be installed in accordance with current plumbing requirements and site conditions.
RainBank Status Lights
The RainBank controller includes visual status feedback so the user can identify operating conditions.
Davey's documentation includes status indication for water-source operation and a yellow fault LED for fault conditions.
This makes basic diagnosis easier than a pump-only arrangement where there may be no indication of why the system has stopped supplying tank water.
The RainBank is not Wi-Fi enabled; system information is provided locally at the controller.
KRB2 vs KRB2NF Floatless
KRB2
Uses the HS50-06 pump with a top-entry level switch. This is the standard surface-mounted KRB2 configuration.
KRB2NF
Uses the same HS50-06 pump but is designed as a floatless flooded-suction system where tank water remains above the pump inlet.
Both are rated at approximately 46 L/min at 200kPa, but they use different methods to manage rainwater availability.
The correct configuration depends on tank layout and whether the installation provides reliable flooded suction.
INSTALLATION REQUIREMENTS
What Is Required to Install the Davey KRB2?
Suitable rainwater tank and accessible top-entry point
Correct installation of the top-entry level switch
Suitable location for the HS50-06 surface pump
Correctly sized rainwater suction pipework
Airtight suction plumbing where suction lift applies
Suitable mains-water connection
Correct isolation-valve arrangement
Required backflow and plumbing compliance
Suitable 220–240V electrical supply
RainBank mounted on the pump or supportive nearby wall
Safe access for future maintenance
Testing of rainwater and mains-water operation
Suction Pipework Matters
The KRB2 uses a surface-mounted pump, so the hydraulic arrangement between the tank and HS50-06 is important.
Where the pump sits above the tank-water level, the suction line must remain airtight and be designed so the pump can maintain prime.
Davey's HS-series data permits suction lift under suitable conditions and specifies a maximum suction head of approximately 6 metres for the series.
That figure is not a recommended pipe-run length. Horizontal distance, pipe diameter, elbows, valves and actual vertical lift all contribute to suction loss.
For difficult tank layouts, another RainBank configuration may be more suitable.
What's Included With Davey KRB2 Installation?
Standard Replacement
Where the property qualifies for the selected JR package, installation can include supply of the genuine KRB2 system, removal of the existing pump system where included and installation into suitable existing services.
Pump, Controller & Float Setup
The HS50-06, RainBank controller, top-entry level switch, rainwater supply and mains backup are connected and tested before commissioning.
Possible Additional Work
Suction-pipe changes, delivery pipework alterations, valves, electrical work, backflow upgrades, tank modifications or changes to the rainwater/mains layout can increase installation scope.
How Much Does Davey KRB2 Installation Cost?
Current supplied-and-installed pricing is shown through JR's live product and installation selector above.
The final Davey KRB2 installation cost depends on whether the job is a genuine like-for-like RainBank replacement or requires changes to suction pipework, mains-water plumbing, backflow protection, electrical supply, controller location or tank-level-switch arrangement.
A straightforward KRB2 replacement in an existing compliant installation is generally simpler than converting a basic rainwater pump into a complete automatic mains-backup system.
JR's live product currently lists the KRB2 as an active supplied-and-installed rainwater system and identifies the installation as Lifetime Warranty eligible under JR's applicable installation program.
BRISBANE INSTALLATION
Davey KRB2 RainBank Installation Brisbane
JR Gas & Water supplies and installs the Davey KRB2 RainBank in Brisbane for suitable household rainwater-system replacements and new automatic rainwater-reuse installations.
The KRB2 is particularly relevant where a property wants a surface-mounted system with stronger pressure capability than Davey's lighter RainBank options.
JR checks tank configuration, suction conditions, intended rainwater fixtures, mains-water connection, backflow arrangement, electrical supply and required pressure before confirming the final installation.
Eligible service coverage extends across Greater Brisbane and surrounding areas including Logan, Ipswich, Redlands and Moreton Bay.
GOLD COAST INSTALLATION
Davey KRB2 RainBank Installation Gold Coast
JR Gas & Water also supplies and installs the Davey KRB2 RainBank on the Gold Coast across eligible service areas.
For properties supplying toilets, laundry or selected outdoor fixtures from stored rainwater, automatic mains backup can keep those fixtures available when the tank runs low.
JR assesses tank access, suction pipework, available flow, level-switch installation, mains-water arrangement and electrical supply before commissioning the system.
This helps ensure the KRB2 is selected for the actual property rather than simply choosing a higher-capacity pump without considering the surrounding system.
Can the Davey KRB2 Replace My Existing Rainwater System?
Replacing Another KRB2
Usually the simplest pathway where the existing HS50-06 position, tank float arrangement and plumbing remain suitable.
Replacing a KRB1
The KRB2 provides additional pressure and flow, but pipework and household demand should be checked before increasing pump size.
Replacing a Basic Tank Pump
Adding RainBank mains backup can require additional mains plumbing, controller installation, level-switch work and compliance upgrades.
Replacing a Submersible System
Moving to a surface-mounted KRB2 may require substantial changes to suction pipework and the pump installation position.
New Rainwater Installation
A new system needs to be designed around the tank, connected fixtures, mains backup, suction line, backflow protection and electrical supply.
Changing to Floatless
The KRB2NF can be considered where the system has a suitable flooded-suction arrangement and a floatless setup is preferred.
Davey RainBank Surface Range Comparison
| System | Pump | Flow at 200kPa | Davey Positioning |
|---|---|---|---|
| KRBX1 | SJ35-04 | 25 L/min | Light single-storey duty |
| KRB1 | HP45-05 | 40 L/min | Typical single-storey domestic use |
| KRB2 | HS50-06 | 46 L/min | Higher pressure / flow and double-storey applications |
| KRB3 | HM60-08 | 60 L/min | Premium higher-pressure applications |
| KRB4 | HM90-13 | 80 L/min | Highest-flow surface RainBank applications |
The KRB2 therefore sits in the middle of Davey's surface-mounted RainBank range: stronger than the entry-level systems but below the larger KRB3 and KRB4 packages.
COMMON QUESTIONS
Davey KRB2 RainBank Installation FAQs
What pump does the Davey KRB2 use?
The standard KRB2 uses the Davey HS50-06 horizontal multistage surface pump.
How much water does the KRB2 deliver?
Davey publishes approximately 46 L/min at 200kPa for the complete KRB2 RainBank package.
Is the KRB2 suitable for a double-storey home?
Yes. Davey's selection guide specifically places the KRB2 in its higher-pressure category for longer pipe runs and double-storey buildings.
Does the KRB2 automatically switch to mains water?
Yes. Rainwater receives priority and mains water is supplied automatically when usable tank water is unavailable.
What happens during a power outage?
Davey designs RainBank to provide mains-water backup during electrical interruptions, so connected fixtures can continue receiving mains supply.
Does the KRB2 use a tank float?
Yes. The standard KRB2 uses a top-entry level switch. The separate KRB2NF is the floatless version.
How long is the KRB2 top-entry level-switch lead?
Davey's current RainBank technical sheet publishes approximately 9 metres for the top-entry level-switch lead.
What power does the HS50-06 use?
Davey publishes approximately 0.89kW input power and 0.60kW motor output.
How much current does the pump draw?
The HS50-06 has a published full-load current of approximately 3.8A.
What electrical supply is required?
The HS50-06 uses approximately 220–240V, 50Hz single-phase power.
What is the HS50-06 pump IP rating?
Davey publishes an enclosure class of IP55 for the HS50-06 pump.
What size connections does the pump use?
The HS50-06 uses approximately 1¼-inch BSP female inlet and 1-inch BSP female outlet connections.
What size connections are on the RainBank controller?
Davey publishes a ¾-inch BSP male mains inlet, 1-inch BSP male rainwater inlet and ¾-inch BSP male outlet.
What is the maximum mains pressure for RainBank?
Davey's current technical sheet publishes up to 900kPa mains pressure, while also noting that applicable local standards must be followed.
What is the maximum pump pressure through RainBank?
Davey's current RainBank technical data specifies approximately 600kPa maximum pump pressure.
Does the RainBank have backflow protection?
Yes. Davey identifies an integrated dual-check backflow-protection valve within the RainBank controller.
Can the KRB2 supply toilets and laundry?
Yes. Toilet and laundry rainwater supply are core RainBank applications where the plumbing is configured and installed appropriately.
Can it supply garden taps?
Yes. Davey also identifies exterior taps, garden irrigation and related rainwater-use applications.
Does the KRB2 have Wi-Fi?
No. RainBank uses local controller status indicators rather than Wi-Fi control.
What is the difference between KRB2 and KRBS2?
The KRB2 uses the external HS50-06 surface pump and delivers approximately 46 L/min at 200kPa. KRBS2 uses a D53A/B submersible pump inside the tank and is rated at approximately 63 L/min at 200kPa.
What warranty does the KRB2 have?
Davey's current Australian RainBank surface-pump page publishes a 36-month warranty, subject to the complete warranty conditions.
How much does KRB2 installation cost?
Use JR's live product and installation selector for current supplied-and-installed pricing. Final cost depends on tank access, suction plumbing, mains connection, backflow requirements, electrical supply and whether the job is genuinely like-for-like.
Can JR install the Davey KRB2 in Brisbane or the Gold Coast?
Yes. JR installs suitable RainBank and water-pump systems across eligible Brisbane, Gold Coast and surrounding South East Queensland service areas.
Davey KRB2 Warranty
Davey RainBank Warranty
Davey's current Australian RainBank for Surface Pumps page publishes a 36-month manufacturer warranty.
JR Live Product Listing
JR's current live product page presently displays a 2-year product warranty, so the manufacturer and retailer records should be distinguished rather than treated as identical.
Installation Conditions Matter
Correct plumbing, tank-level switching, electrical connection, water quality and compliance requirements remain important to reliable system operation and warranty eligibility.
For manufacturer warranty claims, use the current Davey warranty documentation supplied with the product. JR installation warranty and Davey product warranty are separate.
Claims Strengthened or Cleaned Up From the Existing KRB2 Copy
Added exact HS50-06 pump identification
Confirmed standard KRB2 uses a top-entry level switch
Confirmed 46 L/min at 200kPa system performance
Added Davey's higher-pressure and higher-flow positioning
Added double-storey and longer-pipe-run positioning
Added 0.89kW pump input and 0.60kW motor output
Added 3.8A full-load current
Added IP55 pump enclosure rating
Added 1¼" pump inlet and 1" pump outlet specifications
Added RainBank connection sizes
Added 9m top-entry level-switch lead
Added built-in dual-check backflow protection
Added mains backup during electrical interruption
Separated KRB2 from KRB2NF floatless configuration
Corrected RainBank maximum pump pressure to Davey's 600kPa manufacturer specification
Added current 36-month Davey RainBank warranty
Removed vague claims that cheaper systems are inherently unreliable
Replaced generic performance claims with manufacturer flow and pressure data
Why Choose JR Gas & Water for Davey RainBank Installation?
JR Gas & Water supplies and installs rainwater pump and automatic mains-backup systems across Brisbane, the Gold Coast and eligible surrounding South East Queensland service areas.
A RainBank installation depends on more than pump size. Tank configuration, suction conditions, level-switch arrangement, mains-water connection, backflow protection, electrical supply, pipe sizing and expected household demand all affect the final result.
JR assesses the existing system and property requirements before confirming whether KRB2, another RainBank model or a different pump arrangement is the more appropriate solution.
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READY TO INSTALL
Install the Davey KRB2 With JR Gas & Water
The Davey KRB2 RainBank combines automatic rainwater-to-mains changeover with the HS50-06 surface-mounted multistage pump, delivering approximately 46 L/min at 200kPa for suitable domestic rainwater systems.
Its strongest fit is properties wanting an accessible surface-mounted pump, automatic mains backup and more flow or pressure than Davey's lighter RainBank arrangements provide.
JR Gas & Water supplies and installs suitable Davey KRB2 systems across eligible Brisbane and Gold Coast service areas. Choose the applicable live installation package above, or use JR's quote pathway where the job involves difficult tank access, suction-pipe changes, backflow upgrades, electrical alterations or conversion from another rainwater-system layout.