{"product_id":"calpeda-4sdp-2-40-w-stainless-steel-4-inch-submersible-bore-pump-clean-water-supply","title":"Calpeda 4SDP 2\/40-W Stainless Steel 4\" Submersible Bore Pump for Clean Water Supply with Floating Impellers","description":"\u003cp\u003eClean water distribution requiring extreme lift heights from 4-inch borehole installations is the primary application for this ultra-high pressure submersible pump. It manages groundwater containing suspended sand up to 150 g\/m³ and supports continuous duty for high-altitude tank systems and multi-story civil infrastructure.\u003c\/p\u003e\u003cp\u003eWith a 2.2 kW three-phase motor at 415V, the 40-stage assembly achieves a maximum head of 247 meters and a peak flow of 50 L\/Min. The mechanical interface conforms to NEMA standards, ensuring a secure connection to high-performance submersible borehole motors.\u003c\/p\u003e\u003cp\u003eHigh-strength LEXAN floating impellers move axially within each stage to accommodate sand particles, helping to protect the polycarbonate diffusers from abrasive wear in ultra-deep boreholes. The design supports stable water delivery during demanding pressure cycles.\u003c\/p\u003e\u003cp\u003eAISI 304 stainless steel forms the external jacket, with a delivery casing incorporating a built-in non-return valve to shield the 40 stages from water column weight and backflow during shutdown. Rated for water 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\u003eLEXAN radial floating impellers are designed to handle sand particles while preventing internal mechanical blockage\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers reduce internal turbulence and improve hydraulic efficiency\u003c\/li\u003e\n\u003cli\u003eForty-stage configuration delivers 247 meters of head for ultra-high-lift deep-well applications\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides corrosion resistance in aggressive borehole environments\u003c\/li\u003e\n\u003cli\u003eIntegrated non-return valve protects the hydraulics and motor from back-pressure and column weight\u003c\/li\u003e\n\u003cli\u003eNEMA-standard coupling ensures compatibility with a wide range of submersible motor units\u003c\/li\u003e\n\u003cli\u003eChrome-nickel steel suction lantern with fine filter prevents mineral particulates from entering the stages\u003c\/li\u003e\n\u003cli\u003eClass F insulation and IP68 protection support continuous duty in deep, fully submerged boreholes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50983319896311,"sku":"4SDP 2\/40-W","price":2170.14,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-2-40-w-stainless-steel-4-inch-submersible-bore-pump-clean-water-supply.png?v=1785325814","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-2-40-w-stainless-steel-4-inch-submersible-bore-pump-clean-water-supply","provider":"Foundation Pumps","version":"1.0","type":"link"}