{"product_id":"davey-rainbank-submersible-rainwater-harvesting-kit-in-tank-pump-mains-backup-watermark-nz","title":"Davey RainBank Submersible Rainwater Harvesting Kit - In-Tank Pump, Mains Backup, WaterMark NZ","description":"\u003cp\u003eThe Davey RainBank submersible kit places the pump inside your rainwater tank for quieter running and a cleaner installation — no external pump to house or protect. The pump cannot be tampered with by children or pets. The system automatically uses rainwater first and switches to mains water when the tank is empty.\u003c\/p\u003e\n\n\u003cp\u003eA float switch inside the tank detects water level. When water is present and demand is detected, the submersible pump delivers rainwater. When the tank runs dry, mains water flows through the RainBank without the pump running. Mains continues to flow even in a power outage.\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 five models from small single-tap applications through to double storey homes. Two models are available with a 20-metre pump lead for deeper tanks. 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: Submersible pump dual source rainwater harvesting kit\u003c\/li\u003e\n  \u003cli\u003eFloat type: Submersible float (integral to pump, inside tank)\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\u003eKRBSA1 — for 1–2 taps or light irrigation\u003c\/strong\u003e\u003cbr\u003ePump: D23A\/B submersible | Flow @ 200 kPa: 10 lpm | Output: 0.20 kW\u003cbr\u003eFor minimal demand — a single toilet, outdoor tap, or small irrigation zone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRBS1 — for single storey homes\u003c\/strong\u003e\u003cbr\u003ePump: D42A\/B submersible | Flow @ 200 kPa: 40 lpm | Output: 0.60 kW\u003cbr\u003eSuits single storey homes with standard simultaneous demand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRBS1\/20 — for single storey homes, deeper tanks\u003c\/strong\u003e\u003cbr\u003ePump: D42A\/B submersible with 20m lead | Flow @ 200 kPa: 40 lpm | Output: 0.60 kW\u003cbr\u003eSame as KRBS1 with a 20-metre pump lead for tanks where a standard lead length is insufficient.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRBS2 — for double storey homes\u003c\/strong\u003e\u003cbr\u003ePump: D53A\/B submersible | Flow @ 200 kPa: 63 lpm | Output: 0.84 kW\u003cbr\u003eHigher flow and pressure for double storey homes and larger simultaneous demand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKRBS2\/20 — for double storey homes, deeper tanks\u003c\/strong\u003e\u003cbr\u003ePump: D53A\/B submersible with 20m lead | Flow @ 200 kPa: 63 lpm | Output: 0.84 kW\u003cbr\u003eSame as KRBS2 with a 20-metre pump lead for deeper tank installations.\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 submersible kit\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePump is housed inside the tank — quieter running than a surface-mounted pump\u003c\/li\u003e\n  \u003cli\u003ePump cannot be tampered with by children or pets\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\u003eCleaner installation — no external pump housing required\u003c\/li\u003e\n  \u003cli\u003e20m lead options available for deeper tanks\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\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\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKRBSA1:\u003c\/strong\u003e RainBank\/S controller + D23A\/B submersible pump with float + installation documentation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKRBS1:\u003c\/strong\u003e RainBank\/S controller + D42A\/B submersible pump with float + installation documentation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKRBS1\/20:\u003c\/strong\u003e RainBank\/S controller + D42A\/B submersible pump with float (20m lead) + installation documentation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKRBS2:\u003c\/strong\u003e RainBank\/S controller + D53A\/B submersible pump with float + installation documentation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKRBS2\/20:\u003c\/strong\u003e RainBank\/S controller + D53A\/B submersible pump with float (20m lead) + installation documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3\u003eWhy choose a submersible kit over a surface-mounted kit?\u003c\/h3\u003e\n\u003cp\u003eThe submersible pump sits inside the tank — quieter running, no external pump to house, and the pump cannot be accessed by children or pets. The trade-off is that the pump is less accessible for servicing. Surface-mounted kits are easier to access and maintain but require a protected external location.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does the float switch do on a submersible kit?\u003c\/h3\u003e\n\u003cp\u003eThe float is integral to the submersible pump and sits inside the tank. When the water level drops below the float, it signals the RainBank controller to stop the pump and switch to mains. This prevents the pump from running dry.\u003c\/p\u003e\n\n\u003ch3\u003eWhen do I need the 20m lead option?\u003c\/h3\u003e\n\u003cp\u003eIf your tank is deep, or the controller is located a significant distance from the pump inside the tank, the 20m lead option (KRBS1\/20 or KRBS2\/20) provides the additional cable length needed. The standard KRBS1 and KRBS2 models include a standard lead length.\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\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\u003cdiv style=\"background:#fff3cd;border:1px solid #ffc107;border-radius:8px;padding:16px;margin:20px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px;font-weight:700;color:#856404;\"\u003e⚠️ Disclaimer – Collective \/ Dropship Product\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:14px;color:#856404;\"\u003eThis product is supplied \u0026amp; shipped directly by the brand via Shopify Collective. Estimated delivery: 2–4 working days NZ-wide. Action Outdoors is not responsible for shipping delays from the supplier.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Filtration Station NZ","offers":[{"title":"KRBSA1 - 0.20kW (10 lpm)","offer_id":51983995470109,"sku":"KRBSA1","price":2099.9,"currency_code":"NZD","in_stock":true},{"title":"KRBS1 - 0.60kW (40 lpm)","offer_id":51983995502877,"sku":"KRBS1","price":2291.95,"currency_code":"NZD","in_stock":true},{"title":"KRBS1\/20 - 0.60kW (20m lead)","offer_id":51983995535645,"sku":"KRBS1\/20","price":2471.35,"currency_code":"NZD","in_stock":true},{"title":"KRBS2 - 0.84kW (63 lpm)","offer_id":51983995568413,"sku":"KRBS2","price":2647.3,"currency_code":"NZD","in_stock":true},{"title":"KRBS2\/20 - 0.84kW (20m lead)","offer_id":51983995601181,"sku":"KRBS2\/20","price":2807.15,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0864\/1072\/3613\/files\/KRBS1-RainBank-Submersible-Pump.png?v=1783221780","url":"https:\/\/actionoutdoors.kiwi\/products\/davey-rainbank-submersible-rainwater-harvesting-kit-in-tank-pump-mains-backup-watermark-nz","provider":"Action Outdoors Limited","version":"1.0","type":"link"}