{"product_id":"calpeda-4sdp-4-35-w-stainless-steel-4-inch-submersible-bore-pump-commercial-water-supply","title":"Calpeda 4SDP 4\/35-W Stainless Steel 4\" Submersible Bore Pump for Commercial Water Supply with Floating Impellers","description":"\u003cp\u003eHeavy-duty water supply and civil installations requiring high-pressure extraction from deep 4-inch borehole sources are the primary application for this submersible pump. It is configured for clean liquids with sand concentrations up to 150 g\/m³ and supports continuous duty for high-altitude distribution and pressurised storage systems.\u003c\/p\u003e\u003cp\u003eA 3 kW three-phase motor at 415V drives the 35-stage assembly, achieving a maximum head of 212 meters and a peak flow of 100 L\/Min. The mechanical interface conforms to NEMA standards, ensuring a secure connection to high-performance 4-inch submersible motors.\u003c\/p\u003e\u003cp\u003eAxial movement of the LEXAN floating impellers within each stage helps to accommodate sand particles without motor seizure, protecting the precision internal parts. The design supports efficient operation during demanding duty cycles from significant 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 prevent water column drainage and motor reverse rotation during shutdown. 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 internal turbulence and improve hydraulic efficiency\u003c\/li\u003e\n\u003cli\u003eThirty-five-stage hydraulic assembly delivers 212 meters of head for ultra-high-lift water projects\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides resistance to borehole oxidation and chemical attack\u003c\/li\u003e\n\u003cli\u003eBuilt-in non-return valve protects the pump from reverse water weight and hydraulic hammer\u003c\/li\u003e\n\u003cli\u003eNEMA-standard motor coupling ensures compatibility with a wide range of submersible motors\u003c\/li\u003e\n\u003cli\u003eChrome-nickel steel suction lantern with fine-mesh filter prevents debris from entering the internal 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":50983322190071,"sku":"4SDP 4\/35-W","price":1971.92,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-4-35-w-stainless-steel-4-inch-submersible-bore-pump-commercial-water-supply.png?v=1785325837","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-4-35-w-stainless-steel-4-inch-submersible-bore-pump-commercial-water-supply","provider":"Foundation Pumps","version":"1.0","type":"link"}