{"product_id":"davey-floatless-rainbank-automatic-switch","title":"Davey RainBank Floatless Rainwater Harvesting Kit - Surface Pump, Mains Backup, WaterMark NZ","description":"\u003cp\u003eThe Davey RainBank Floatless kit automatically selects your water source — using rainwater from your tank first, and switching seamlessly to mains water when the tank runs low. No float switch required. The controller detects positive pump pressure to confirm water is present in the tank, making installation simpler than a standard float-equipped system.\u003c\/p\u003e\n\n\u003cp\u003eWhen rainwater is available the pump delivers it to your toilets, laundry, and garden. When the tank is empty, mains water flows through the RainBank without the pump running. In the event of a power outage, mains water continues to flow — no interruption to supply.\u003c\/p\u003e\n\n\u003cp\u003eA built-in dual check valve meets the backflow protection requirements of AS\/NZS 3500-1, protecting your mains water supply. No solenoid valves in the design — fewer parts, less to block.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in two models matched to your home's pressure needs. Select your model from the dropdown.\u003c\/p\u003e\n\n\u003cp\u003eWaterMark WMTS-477:2016 (Lic WM-022042). Smart Approved WaterMark. Tested in compliance with AS\/NZS 4020. Must be installed by a licensed plumber.\u003c\/p\u003e\n\n\u003cp\u003eBore water quality varies significantly. We recommend testing your bore water before selecting a filtration system — get in touch and we'll help you choose the right configuration for your supply.\u003c\/p\u003e\n\n\u003ch2\u003eKey specs at a glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eType: Floatless dual source rainwater harvesting controller kit\u003c\/li\u003e\n  \u003cli\u003eFloat required: No (optional external float can be added)\u003c\/li\u003e\n  \u003cli\u003eSuitable for: Flooded suction applications only\u003c\/li\u003e\n  \u003cli\u003eMax mains water pressure: 600 kPa\u003c\/li\u003e\n  \u003cli\u003eMax water temperature: 50°C\u003c\/li\u003e\n  \u003cli\u003eMains inlet: ¾\" BSP M | Rainwater inlet: 1\" BSP M | Outlet: ¾\" BSP M\u003c\/li\u003e\n  \u003cli\u003eController: IP23, 220–250V, 50Hz\u003c\/li\u003e\n  \u003cli\u003eBackflow protection: Built-in dual check valve (AS\/NZS 3500-1)\u003c\/li\u003e\n  \u003cli\u003eWaterMark WMTS-477:2016 (Lic WM-022042)\u003c\/li\u003e\n  \u003cli\u003eGuarantee: 3 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChoosing your model\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eKRB1NF — for single storey homes\u003c\/strong\u003e\u003cbr\u003e\nIncludes: RainBank controller + HP45-05 pump\u003cbr\u003e\nFlow @ 200 kPa: 40 lpm | Max pump pressure: 350 kPa\u003cbr\u003e\nSuitable for single storey homes with standard simultaneous demand.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKRB2NF — for double storey homes and higher pressure\u003c\/strong\u003e\u003cbr\u003e\nIncludes: RainBank controller + HS50-06 pump\u003cbr\u003e\nFlow @ 200 kPa: 46 lpm | Max pump pressure: 480 kPa\u003cbr\u003e\nHigher pressure output — suited to double storey homes and longer pipe runs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Floatless models require flooded suction — the lowest water level in the tank must remain above the top of the pump at all times to maintain pump prime.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhy Kiwi homeowners choose the Davey RainBank Floatless\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eNo float required — simpler installation with fewer components\u003c\/li\u003e\n  \u003cli\u003eRainwater used first automatically — no manual switching\u003c\/li\u003e\n  \u003cli\u003eSeamless mains backup — no interruption when the tank runs dry\u003c\/li\u003e\n  \u003cli\u003eMains water flows through even during a power outage\u003c\/li\u003e\n  \u003cli\u003eBuilt-in dual check valve — backflow protection included, not an add-on\u003c\/li\u003e\n  \u003cli\u003eNo solenoid valves — fewer moving parts, greater long-term reliability\u003c\/li\u003e\n  \u003cli\u003eIntelligent leak detection — ignores small leaks to prevent nuisance pump cycling\u003c\/li\u003e\n  \u003cli\u003eWaterMark certified and Smart Approved WaterMark\u003c\/li\u003e\n  \u003cli\u003eExternal float can be added if your installation requires it\u003c\/li\u003e\n  \u003cli\u003e3-year guarantee backed by Davey's NZ dealer network\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow it works\u003c\/h2\u003e\n\u003cp\u003eThe RainBank controller sits between your rainwater tank, your mains supply, and your home's water outlets. When demand is detected, the controller checks whether rainwater is available. If the pump is primed (tank water is present), it starts the pump and delivers rainwater. If the tank is empty, mains water flows through the RainBank directly — without the pump running.\u003c\/p\u003e\n\u003cp\u003eThe floatless controller detects tank water availability by monitoring pump pressure at startup, eliminating the need for a float switch in the tank. An optional external float can be connected if your installation requires it.\u003c\/p\u003e\n\n\u003ch2\u003eOperating limits\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eKRB1NF\u003c\/th\u003e\n\u003cth\u003eKRB2NF\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFlow @ 200 kPa\u003c\/td\u003e\n\u003ctd\u003e40 lpm\u003c\/td\u003e\n\u003ctd\u003e46 lpm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax pump pressure\u003c\/td\u003e\n\u003ctd\u003e350 kPa\u003c\/td\u003e\n\u003ctd\u003e480 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePump included\u003c\/td\u003e\n\u003ctd\u003eHP45-05\u003c\/td\u003e\n\u003ctd\u003eHS50-06\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePump output (P2)\u003c\/td\u003e\n\u003ctd\u003e0.55 kW\u003c\/td\u003e\n\u003ctd\u003e0.60 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePump full load current\u003c\/td\u003e\n\u003ctd\u003e3.4A\u003c\/td\u003e\n\u003ctd\u003e3.8A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax mains pressure\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e600 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax pump amps\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e12A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMains inlet\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e¾\" BSP M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRainwater inlet\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e1\" BSP M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutlet\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e¾\" BSP M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePump inlet\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e1¼\" BSP F\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax water temperature\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMin water temperature\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax ambient temperature\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eController voltage\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e220–250V, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eController IP rating\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIP23\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWaterMark\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eWMTS-477:2016, Lic WM-022042\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eKRB1NF:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × RainBank floatless controller\u003c\/li\u003e\n  \u003cli\u003e1 × HP45-05 surface pressure pump\u003c\/li\u003e\n  \u003cli\u003eInstallation documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKRB2NF:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × RainBank floatless controller\u003c\/li\u003e\n  \u003cli\u003e1 × HS50-06 surface pressure pump\u003c\/li\u003e\n  \u003cli\u003eInstallation documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3\u003eWhat does the RainBank Floatless do?\u003c\/h3\u003e\n\u003cp\u003eIt automatically manages two water sources — rainwater tank and mains supply — giving rainwater priority. When the tank has water, the pump delivers it. When the tank runs dry, mains water flows through without any manual intervention.\u003c\/p\u003e\n\n\u003ch3\u003eWhy floatless?\u003c\/h3\u003e\n\u003cp\u003eA standard RainBank uses a float switch inside the tank to detect water level. The floatless version detects water availability by sensing pump pressure at startup — no float, no wiring into the tank, simpler installation. An external float can still be connected if your installation needs it.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is flooded suction and why does it matter?\u003c\/h3\u003e\n\u003cp\u003eFlooded suction means the tank water level is always above the pump inlet — water flows to the pump by gravity, keeping it primed. Floatless RainBank models require this to work correctly. If your tank is at the same level or lower than the pump, use a surface mounted RainBank with float switch instead.\u003c\/p\u003e\n\n\u003ch3\u003eWhat happens when the tank runs empty?\u003c\/h3\u003e\n\u003cp\u003eMains water flows through the RainBank to your outlets — the pump does not run. When rainwater returns to the tank, the system automatically reverts to rainwater priority. No button press, no manual reset required.\u003c\/p\u003e\n\n\u003ch3\u003eWhat happens during a power outage?\u003c\/h3\u003e\n\u003cp\u003eMains water continues to flow through the RainBank passively — no pump, no controller power needed. The system fails safe to mains supply.\u003c\/p\u003e\n\n\u003ch3\u003eDoes it protect against backflow?\u003c\/h3\u003e\n\u003cp\u003eYes — a dual check valve is built into the controller, meeting the backflow protection requirements of AS\/NZS 3500-1. No separate backflow device is required.\u003c\/p\u003e\n\n\u003ch3\u003eDoes it need a plumber to install?\u003c\/h3\u003e\n\u003cp\u003eYes — must be installed by a licensed plumber. This is a requirement of the WaterMark certification.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the difference between KRB1NF and KRB2NF?\u003c\/h3\u003e\n\u003cp\u003eThe KRB2NF includes the higher-pressure HS50-06 pump — better suited to double storey homes and longer pipe runs. The KRB1NF includes the HP45-05 and suits single storey installations with standard pressure requirements.\u003c\/p\u003e\n\n\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\n\u003cp\u003e3-year guarantee backed by Davey's NZ dealer network.\u003c\/p\u003e","brand":"Davey","offers":[{"title":"KRB1NF - HP45-05 Pump","offer_id":45284746985516,"sku":"KRB1NF","price":2067.7,"currency_code":"NZD","in_stock":true},{"title":"KRB2NF - HS50-06 Pump","offer_id":45284747018284,"sku":"KRB2NF","price":2608.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/5966\/6732\/files\/KRB1-RainBank-Rainwater-Harvesting-Controller.png?v=1771159670","url":"https:\/\/www.filtrationstation.co.nz\/products\/davey-floatless-rainbank-automatic-switch","provider":"Filtration Station NZ","version":"1.0","type":"link"}