{"product_id":"davey-rainbank-with-float-switch-controller","title":"Davey RainBank Surface Pump Rainwater Harvesting Kit - Float Switch, Mains Backup, WaterMark NZ","description":"\u003cp\u003eThe Davey RainBank surface pump kit with float switch automatically selects your water source — using rainwater from your tank first, and switching seamlessly to mains water when the tank runs low. The float switch inside the tank detects water level, triggering the pump when rainwater is available and switching to mains when the tank empties.\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.\u003c\/p\u003e\n\n\u003cp\u003eA built-in dual check valve meets the backflow protection requirements of AS\/NZS 3500-1. No solenoid valves in the design.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in six models across two float entry types (top and side) and four pump sizes — from single storey to multi-storey and high-demand properties. 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: Surface pump dual source rainwater harvesting kit with float switch\u003c\/li\u003e\n  \u003cli\u003eFloat type: Top entry (KRB1, KRB2, KRB3, KRB4) or side entry (KRB1F, KRB2F)\u003c\/li\u003e\n  \u003cli\u003eMax mains water pressure: 900 kPa\u003c\/li\u003e\n  \u003cli\u003eMax pump 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\u003eStep 1 — Choose your flow and pressure requirement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRB1 \/ KRB1F — for single storey homes\u003c\/strong\u003e\u003cbr\u003ePump: HP45-05 | Flow @ 200 kPa: 40 lpm | Pressure: standard\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRB2 \/ KRB2F — for double storey homes and higher pressure\u003c\/strong\u003e\u003cbr\u003ePump: HS50-06 | Flow @ 200 kPa: 46 lpm | Pressure: higher\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRB3 — for multi-storey homes and larger families (top entry only)\u003c\/strong\u003e\u003cbr\u003ePump: HM60-08 | Flow @ 200 kPa: 60 lpm | Pressure: higher\u003cbr\u003e\u003cem\u003eNote: HM models require flooded suction applications.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRB4 — for large homes and high-demand applications (top entry only)\u003c\/strong\u003e\u003cbr\u003ePump: HM90-13 | Flow @ 200 kPa: 80 lpm | Pressure: higher\u003cbr\u003e\u003cem\u003eNote: HM models require flooded suction applications.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 2 — Choose your float entry type\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTop entry float (KRB1, KRB2, KRB3, KRB4):\u003c\/strong\u003e Float switch enters from the top of the tank. Easy system access for maintenance and servicing. Leak from the float lead is visible externally.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSide entry float (KRB1F, KRB2F):\u003c\/strong\u003e Float switch enters from the side of the tank. Suits installations where top entry is not practical.\u003c\/p\u003e\n\u003cp\u003eNot sure which model suits your home? Get in touch and we'll help you choose.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Kiwi homeowners choose the Davey RainBank surface kit\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFloat switch detects tank water level precisely — works with suction lift and flooded suction\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 reliability\u003c\/li\u003e\n  \u003cli\u003eIntelligent leak detection — ignores small leaks to prevent nuisance pump cycling\u003c\/li\u003e\n  \u003cli\u003eTop or side entry float options to suit your tank configuration\u003c\/li\u003e\n  \u003cli\u003eWaterMark certified and Smart Approved WaterMark\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\u003eOperating limits\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax mains flow rate\u003c\/td\u003e\n\u003ctd\u003e100 lpm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax pump flow rate\u003c\/td\u003e\n\u003ctd\u003e100 lpm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax mains water pressure\u003c\/td\u003e\n\u003ctd\u003e900 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax pump pressure\u003c\/td\u003e\n\u003ctd\u003e600 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax pump amps\u003c\/td\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax water temperature\u003c\/td\u003e\n\u003ctd\u003e50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMin water temperature\u003c\/td\u003e\n\u003ctd\u003e1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax ambient temperature\u003c\/td\u003e\n\u003ctd\u003e50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMains water inlet\u003c\/td\u003e\n\u003ctd\u003e¾\" BSP M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRainwater inlet\u003c\/td\u003e\n\u003ctd\u003e1\" BSP M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutlet\u003c\/td\u003e\n\u003ctd\u003e¾\" BSP M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eController voltage\u003c\/td\u003e\n\u003ctd\u003e220–250V, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eController IP rating\u003c\/td\u003e\n\u003ctd\u003eIP23\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFloat lead — top entry\u003c\/td\u003e\n\u003ctd\u003e9m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFloat lead — side entry\u003c\/td\u003e\n\u003ctd\u003e5m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWaterMark\u003c\/td\u003e\n\u003ctd\u003eWMTS-477:2016, Lic WM-022042\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\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\u003eKRB1 \/ KRB1F:\u003c\/strong\u003e RainBank controller with float switch (top or side entry) + HP45-05 pump + installation documentation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRB2 \/ KRB2F:\u003c\/strong\u003e RainBank controller with float switch (top or side entry) + HS50-06 pump + installation documentation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRB3:\u003c\/strong\u003e RainBank controller with top entry float switch + HM60-08 pump + installation documentation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRB4:\u003c\/strong\u003e RainBank controller with top entry float switch + HM90-13 pump + installation documentation\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3\u003eWhat's the difference between the floatless and float switch RainBank?\u003c\/h3\u003e\n\u003cp\u003eThe floatless models (KRB1NF\/KRB2NF) detect water availability by sensing pump pressure — suited to flooded suction only. The float switch models use a physical float inside the tank to detect water level, and can work with both flooded suction and suction lift. If your tank is at or below pump level, you need the float switch version.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the difference between top entry and side entry float?\u003c\/h3\u003e\n\u003cp\u003eBoth detect the same thing — tank water level. Top entry is the preferred installation type for most situations: easier access for maintenance and any leak from the lead is visible. Side entry suits installations where top access to the tank is not practical.\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, the system automatically reverts to rainwater priority.\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 or controller power needed.\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.\u003c\/p\u003e\n\n\u003ch3\u003eWhy do the KRB3 and KRB4 require flooded suction?\u003c\/h3\u003e\n\u003cp\u003eThe HM Series pumps used in KRB3 and KRB4 are suited to flooded suction applications. If your installation involves suction lift, choose KRB1 or KRB2 with the HP or HS pump instead.\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 warranty applies?\u003c\/h3\u003e\n\u003cp\u003e3-year guarantee backed by Davey's NZ dealer network.\u003c\/p\u003e","brand":"Davey","offers":[{"title":"KRB1 - Top Entry (HP45-05)","offer_id":45284789846060,"sku":"KRB1","price":2339.1,"currency_code":"NZD","in_stock":true},{"title":"KRB2 - Top Entry (HS50-06)","offer_id":45284789878828,"sku":"KRB2","price":2699.05,"currency_code":"NZD","in_stock":true},{"title":"KRB3 - Top Entry (HM60-08)","offer_id":45284789911596,"sku":"KRB3","price":2969.3,"currency_code":"NZD","in_stock":true},{"title":"KRB4 - Top Entry (HM90-13)","offer_id":45284789944364,"sku":"KRB4","price":3509.8,"currency_code":"NZD","in_stock":true},{"title":"KRB1F - Side Entry (HP45-05)","offer_id":45284789977132,"sku":"KRB1F","price":2557.6,"currency_code":"NZD","in_stock":true},{"title":"KRB2F - Side Entry (HS50-06)","offer_id":45284790009900,"sku":"KRB2F","price":3088.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/5966\/6732\/files\/KRB2-RainBank-Rainwater-Harvesting-Controller.png?v=1771159670","url":"https:\/\/www.filtrationstation.co.nz\/products\/davey-rainbank-with-float-switch-controller","provider":"Filtration Station NZ","version":"1.0","type":"link"}