{"product_id":"calpeda-4sdp-16-20-w-stainless-steel-4-inch-submersible-bore-pump-water-supply-systems","title":"Calpeda 4SDP 16\/20-W Stainless Steel 4\" Submersible Bore Pump for Water Supply Systems with Floating Impellers","description":"\u003cp\u003eWater reticulation systems and agricultural supply requiring high-volume delivery from deep 4-inch borehole installations benefit from this submersible pump. It processes clean water containing sand up to 300 g\/m³ and supports continuous duty for high-demand irrigation networks.\u003c\/p\u003e\u003cp\u003eA 5.5 kW three-phase motor at 415V drives the 20-stage assembly, achieving a peak head of 99 meters and a maximum flow of 400 L\/Min. Mechanical synchronisation is ensured by a NEMA-standard motor coupling, providing a secure connection to high-performance 4-inch submersible borehole motors.\u003c\/p\u003e\u003cp\u003eDurable LEXAN floating impellers move axially within the stage casing, helping to prevent motor seizure when sand particles are present. The high-flow system preserves its hydraulic characteristics while moving large volumes of water from depth.\u003c\/p\u003e\u003cp\u003eAISI 304 stainless steel forms the external jacket, with a delivery casing incorporating a built-in non-return valve to protect the hydraulics and motor from reverse rotation and water column weight during shutdown. Rated for liquid temperatures up to 35°C, the assembly includes a chrome-nickel steel suction lantern and a Class F insulated motor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecial radial floating impellers facilitate sand passage while reducing internal mechanical binding risk\u003c\/li\u003e\n\u003cli\u003eHigh-performance polycarbonate diffusers maintain a smooth hydraulic flow path for improved energy efficiency\u003c\/li\u003e\n\u003cli\u003eTwenty-stage radial configuration delivers 99 meters of head for high-flow agricultural and civil supply\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides resistance to mineral corrosion and borehole stress\u003c\/li\u003e\n\u003cli\u003eIntegrated non-return valve prevents pipe drainage and reduces water hammer risk\u003c\/li\u003e\n\u003cli\u003eNEMA-standard coupling simplifies installation and ensures compatibility with various submersible borehole motors\u003c\/li\u003e\n\u003cli\u003eChrome-nickel steel suction lantern with fine-mesh filter prevents debris entry and intake blockage\u003c\/li\u003e\n\u003cli\u003eClass F insulation and IP68 protection support reliable performance under full well immersion\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50983322878199,"sku":"4SDP 16\/20-W","price":2512.35,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-16-20-w-stainless-steel-4-inch-submersible-bore-pump-water-supply-systems.png?v=1785325873","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-16-20-w-stainless-steel-4-inch-submersible-bore-pump-water-supply-systems","provider":"Foundation Pumps","version":"1.0","type":"link"}