{"product_id":"davey-d42-d53-submersible-sump-pump","title":"Davey D42A\/B D53A\/B Submersible Sump Pump - High Head, Float Switch, 316 SS NZ","description":"\u003cp\u003e\u003cstrong\u003eHigh-head submersible drainage for sumps, basements, flooded areas, and rainwater transfer — with float switch automation and cast 316 stainless steel motor caps.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Davey D42A\/B and D53A\/B are submersible drainage pumps for residential high-head applications. Both suit sump emptying, non-potable rainwater transfer, garden irrigation, treated effluent disposal, flood water removal, and water transfer from wells. Select your model using the dropdown above.\u003c\/p\u003e\n\n\u003cp\u003eThe D42A\/B delivers up to 120 L\/min to a maximum head of 32m. The D53A\/B steps up to 130 L\/min and 45m maximum head — suited to deeper pits, higher discharge points, or longer pipe runs with more head loss.\u003c\/p\u003e\n\n\u003cp\u003eSuited to clean water of neutral pH containing up to 1% small solids (minimum soft solid size: 1.9mm O.D.). Not for use with abrasive materials.\u003c\/p\u003e\n\n\u003ch2\u003eWhich model do I need?\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eModel\u003c\/th\u003e\n      \u003cth\u003eMax flow\u003c\/th\u003e\n      \u003cth\u003eMax head\u003c\/th\u003e\n      \u003cth\u003eInput power\u003c\/th\u003e\n      \u003cth\u003eBest suited to\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eD42A\/B\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e120 L\/min\u003c\/td\u003e\n      \u003ctd\u003e32m\u003c\/td\u003e\n      \u003ctd\u003e1.00kW\u003c\/td\u003e\n      \u003ctd\u003eMost residential sump and drainage, garden irrigation, standard rainwater transfer\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eD53A\/B\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e130 L\/min\u003c\/td\u003e\n      \u003ctd\u003e45m\u003c\/td\u003e\n      \u003ctd\u003e1.31kW\u003c\/td\u003e\n      \u003ctd\u003eDeeper sumps, higher discharge points, flooded basements, high-head applications\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth models have a 1\" BSP female outlet. Get in touch if you'd like help choosing.\u003c\/p\u003e\n\n\u003ch2\u003eKey specs at a glance\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eD42A\/B\u003c\/th\u003e\n      \u003cth\u003eD53A\/B\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax flow\u003c\/td\u003e\n\u003ctd\u003e120 L\/min\u003c\/td\u003e\n\u003ctd\u003e130 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax total head\u003c\/td\u003e\n\u003ctd\u003e32m\u003c\/td\u003e\n\u003ctd\u003e45m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput power (P1)\u003c\/td\u003e\n\u003ctd\u003e1.00kW\u003c\/td\u003e\n\u003ctd\u003e1.31kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput power (P2)\u003c\/td\u003e\n\u003ctd\u003e0.60kW\u003c\/td\u003e\n\u003ctd\u003e0.84kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFull load current\u003c\/td\u003e\n\u003ctd\u003e4.3A\u003c\/td\u003e\n\u003ctd\u003e5.7A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10.8kg\u003c\/td\u003e\n\u003ctd\u003e16.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (A×B×C)\u003c\/td\u003e\n\u003ctd\u003e475×130×370mm\u003c\/td\u003e\n\u003ctd\u003e535×170×430mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eShared specs: float switch fitted | max submergence 12m | 1\" BSP female outlet | IP X8 | 304 SS shaft, motor shell and fasteners | cast 316 SS motor caps | double mechanical seals | stainless steel fine mesh suction strainer | 10m HO7RN-F lead | 2-year warranty.\u003c\/p\u003e\n\n\u003ch2\u003eWhy choose the D42A\/B or D53A\/B\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFloat switch automates operation — starts when water level rises, stops when it drops\u003c\/li\u003e\n  \u003cli\u003eHigh head ratings — 32m (D42) and 45m (D53) — handle elevated discharge points and longer pipe runs\u003c\/li\u003e\n  \u003cli\u003eCast 316 stainless steel motor caps for outstanding corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e304 stainless steel shaft, fasteners, and handle\u003c\/li\u003e\n  \u003cli\u003ePatented independently floating neck rings for consistent pump performance and long pump life\u003c\/li\u003e\n  \u003cli\u003eCorrosion resistant polycarbonate impellers with closed vane design and long engagement D-drives\u003c\/li\u003e\n  \u003cli\u003eDouble mechanical seals — one in oil bath on the motor, one on the pump\u003c\/li\u003e\n  \u003cli\u003eStainless steel fine mesh suction strainer prevents blockages from solids\u003c\/li\u003e\n  \u003cli\u003eBuilt-in thermal overload protects motor from blockage or voltage supply problems\u003c\/li\u003e\n  \u003cli\u003e10m HO7RN-F oil-resistant lead\u003c\/li\u003e\n  \u003cli\u003eISO 9001 and ISO 14001 certified manufacturer\u003c\/li\u003e\n  \u003cli\u003e2-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow it works\u003c\/h2\u003e\n\u003cp\u003eThe pump sits on the floor of the sump, pit, or flooded area, fully submerged. As the water level rises, the float switch lifts with it and triggers the pump to start. Water enters through the stainless steel fine mesh suction strainer at the base, passes through the multi-stage impellers, and exits through the 1\" outlet to the discharge line. When the water level drops to the safe operating point, the float falls and the pump shuts off automatically.\u003c\/p\u003e\n\u003cp\u003eThe D42A\/B uses a 2-impeller multistage design. The D53A\/B uses a 3-impeller design — the additional stage increases head pressure for higher discharge points and longer pipe runs.\u003c\/p\u003e\n\n\u003ch2\u003eOperating limits and suitable fluids\u003c\/h2\u003e\n\u003cp\u003eBoth models are designed for clean water of neutral pH containing up to 1% small solids (minimum soft solid size: 1.9mm O.D.). Some wear should be expected if pumping hard solids in suspension.\u003c\/p\u003e\n\u003cp\u003eDo not pump abrasive materials — sand and grit will accelerate wear. Do not use for recirculating or filtering swimming pools or spas. Not approved for installations where people are in the water while the pump is operating.\u003c\/p\u003e\n\n\u003ch2\u003eFull technical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eD42A\/B\u003c\/th\u003e\n      \u003cth\u003eD53A\/B\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax flow capacity\u003c\/td\u003e\n\u003ctd\u003e120 L\/min\u003c\/td\u003e\n\u003ctd\u003e130 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax total head\u003c\/td\u003e\n\u003ctd\u003e32m\u003c\/td\u003e\n\u003ctd\u003e45m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax submergence\u003c\/td\u003e\n\u003ctd\u003e12m\u003c\/td\u003e\n\u003ctd\u003e12m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutlet size\u003c\/td\u003e\n\u003ctd\u003e1\" BSP female\u003c\/td\u003e\n\u003ctd\u003e1\" BSP female\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput power (P1)\u003c\/td\u003e\n\u003ctd\u003e1.00kW\u003c\/td\u003e\n\u003ctd\u003e1.31kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput power (P2)\u003c\/td\u003e\n\u003ctd\u003e0.60kW\u003c\/td\u003e\n\u003ctd\u003e0.84kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e220–240V, 50Hz, 1ph\u003c\/td\u003e\n\u003ctd\u003e220–240V, 50Hz, 1ph\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFull load current\u003c\/td\u003e\n\u003ctd\u003e4.3A\u003c\/td\u003e\n\u003ctd\u003e5.7A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLocked rotor current\u003c\/td\u003e\n\u003ctd\u003e14A\u003c\/td\u003e\n\u003ctd\u003e14A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMotor speed\u003c\/td\u003e\n\u003ctd\u003e2 pole, 2850rpm\u003c\/td\u003e\n\u003ctd\u003e2 pole, 2850rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIP rating\u003c\/td\u003e\n\u003ctd\u003eX8 (submersible)\u003c\/td\u003e\n\u003ctd\u003eX8 (submersible)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInsulation class\u003c\/td\u003e\n\u003ctd\u003eClass F\u003c\/td\u003e\n\u003ctd\u003eClass F\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eImpeller stages\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMechanical seal — pump\u003c\/td\u003e\n\u003ctd\u003eCarbon \/ ceramic\u003c\/td\u003e\n\u003ctd\u003eCarbon \/ ceramic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMechanical seal — motor\u003c\/td\u003e\n\u003ctd\u003eSilicon carbide \/ ceramic (oil bath)\u003c\/td\u003e\n\u003ctd\u003eSilicon carbide \/ ceramic (oil bath)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePump shaft\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMotor caps\u003c\/td\u003e\n\u003ctd\u003eCast 316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCast 316 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMotor shell\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePump casing\u003c\/td\u003e\n\u003ctd\u003eGlass filled polycarbonate\u003c\/td\u003e\n\u003ctd\u003eGlass filled polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eImpeller\u003c\/td\u003e\n\u003ctd\u003eGlass filled polycarbonate\u003c\/td\u003e\n\u003ctd\u003eGlass filled polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFasteners\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eO-rings \/ shaft seal\u003c\/td\u003e\n\u003ctd\u003eNitrile Rubber\u003c\/td\u003e\n\u003ctd\u003eNitrile Rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax pumped water temperature\u003c\/td\u003e\n\u003ctd\u003e40°C\u003c\/td\u003e\n\u003ctd\u003e40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax soft solids\u003c\/td\u003e\n\u003ctd\u003e1.9mm O.D.\u003c\/td\u003e\n\u003ctd\u003e1.9mm O.D.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSuitable fluid\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eClean water, neutral pH, up to 1% small solids\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower lead\u003c\/td\u003e\n\u003ctd\u003e10m HO7RN-F oil-resistant\u003c\/td\u003e\n\u003ctd\u003e10m HO7RN-F oil-resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10.8kg\u003c\/td\u003e\n\u003ctd\u003e16.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (A×B×C×D×E×F)\u003c\/td\u003e\n\u003ctd\u003e475×130×370×235×195×330mm\u003c\/td\u003e\n\u003ctd\u003e535×170×430×235×195×330mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 years\u003c\/td\u003e\n\u003ctd\u003e2 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\u003eDavey submersible sump pump (D42A\/B or D53A\/B as selected)\u003c\/li\u003e\n  \u003cli\u003e10m HO7RN-F power lead with 3-pin NZ plug\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhich model is right for my application?\u003c\/h3\u003e\n\u003cp\u003eThe D42A\/B suits most residential sump and drainage applications — 120 L\/min and 32m maximum head covers typical sumps, garden irrigation, and standard rainwater transfer. The D53A\/B is the better choice where the discharge point is higher, the pipe run is longer, or the installation involves a deep basement or well. Both have a 1\" BSP female outlet.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does the float switch do?\u003c\/h3\u003e\n\u003cp\u003eThe float switch automates the pump. As the water level rises in the sump or pit, the float lifts with it. When it reaches the trigger point, the pump switches on and starts draining. Once the level drops to the safe operating point, the float falls and the pump shuts off. Make sure the float has room to rise and fall freely — if it's restricted, the pump may not operate correctly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the difference between the A and B models?\u003c\/h3\u003e\n\u003cp\u003eThe A model includes a fitted float switch for fully automatic operation. The B model does not include a float switch — it must be switched off manually or via an external float or level switch when the water level drops to the top of the pump housing. For most residential sump applications, the A model is the practical choice.\u003c\/p\u003e\n\n\u003ch3\u003eHow deep can the pump be submerged?\u003c\/h3\u003e\n\u003cp\u003eBoth models can be submerged to a maximum of 12 metres. The IP X8 rating confirms both are designed for permanent full submersion.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does IP X8 mean?\u003c\/h3\u003e\n\u003cp\u003eIP X8 means the pump is designed for continuous operation while fully submerged — not just splash-resistant. The \"X\" indicates no specific dust ingress rating, and the \"8\" confirms it is rated for permanent submersion.\u003c\/p\u003e\n\n\u003ch3\u003eCan it handle dirty water or solids?\u003c\/h3\u003e\n\u003cp\u003eBoth models handle clean water containing up to 1% small solids (min 1.9mm O.D.). A stainless steel fine mesh suction strainer at the base prevents larger solids from entering the pump. Do not pump abrasive materials such as sand or grit.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use it to remove flood water from a basement?\u003c\/h3\u003e\n\u003cp\u003eYes. Both models are specifically suited to flood water removal and managing water entry in basements where the water table is above the foundation. The D53A\/B is the better choice for deeper basements or where the discharge point is at significant height.\u003c\/p\u003e\n\n\u003ch3\u003eWhat size discharge pipe does it need?\u003c\/h3\u003e\n\u003cp\u003eBoth models have a 1\" BSP female outlet. Pair with a 1\" male BSP fitting to connect to your discharge pipework.\u003c\/p\u003e\n\n\u003ch3\u003eCan I install it myself?\u003c\/h3\u003e\n\u003cp\u003eLowering the pump into a sump and connecting to discharge pipework is straightforward for a confident DIY installer. Make sure the float switch has room to operate freely. Always use a rope to position and retrieve the pump — never lower or lift it by the power lead. For installations involving electrical work, get a professional involved.\u003c\/p\u003e\n\n\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\n\u003cp\u003eBoth the Davey D42A\/B and D53A\/B carry a 2-year warranty.\u003c\/p\u003e","brand":"Davey","offers":[{"title":"D42A\/B","offer_id":45119445696556,"sku":"D42A\/B","price":1480.05,"currency_code":"NZD","in_stock":true},{"title":"D53A\/B","offer_id":45119445729324,"sku":"D53A\/B","price":1708.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/5966\/6732\/files\/D42AB-High-Pressure-Pump-1024x777_png.webp?v=1748732811","url":"https:\/\/www.filtrationstation.co.nz\/products\/davey-d42-d53-submersible-sump-pump","provider":"Filtration Station NZ","version":"1.0","type":"link"}