{"product_id":"calpeda-4sdp-4-48-w-stainless-steel-4-inch-submersible-bore-pump-municipal-water-supply","title":"Calpeda 4SDP 4\/48-W Stainless Steel 4\" Submersible Bore Pump for Municipal Water Supply with Floating Impellers","description":"\u003cp\u003eMunicipal water systems and civil infrastructure requiring extreme-lift groundwater recovery from 4-inch well installations are the primary application for this submersible pump. It processes clean water with suspended sand up to 150 g\/m³ and supports continuous duty for high-altitude distribution networks.\u003c\/p\u003e\u003cp\u003eA 4 kW three-phase motor at 415V drives the 48-stage assembly, achieving a maximum head of 289 meters and a peak flow of 100 L\/Min. The motor coupling conforms to NEMA standards, allowing for secure mechanical synchronisation and simplified field serviceability.\u003c\/p\u003e\u003cp\u003eEach stage incorporates LEXAN floating impellers that move axially against polycarbonate diffusers, helping to prevent seizure when sand particles enter the casing. This design reduces abrasive wear on internal surfaces and supports consistent operation during high-pressure water movement from extreme vertical depths.\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 motor from reverse rotation and water column stress. Rated for liquids 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 while preventing internal wear and binding\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers reduce turbulence and improve system energy efficiency\u003c\/li\u003e\n\u003cli\u003eForty-eight-stage hydraulic configuration delivers 289 meters of head for municipal lift projects\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides resistance to mineral corrosion and borehole stress\u003c\/li\u003e\n\u003cli\u003eBuilt-in non-return valve protects the internal hydraulics from back-pressure and column weight stress\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 blocks mineral debris and oversized particulates from the intake\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":50983322222839,"sku":"4SDP 4\/48-W","price":2441.29,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-4-48-w-stainless-steel-4-inch-submersible-bore-pump-municipal-water-supply.png?v=1785325839","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-4-48-w-stainless-steel-4-inch-submersible-bore-pump-municipal-water-supply","provider":"Foundation Pumps","version":"1.0","type":"link"}