{"product_id":"calpeda-4sdp-8-32-w-stainless-steel-4-inch-submersible-bore-pump-high-sand-water","title":"Calpeda 4SDP 8\/32-W Stainless Steel 4\" Submersible Bore Pump for High Sand Water with Floating Impellers","description":"\u003cp\u003eHigh-sand water recovery and commercial supply projects requiring extreme lift heights from 4-inch borehole sources are the primary application for this ultra-high head submersible pump. It manages liquids with suspended sand content up to 300 g\/m³ and supports continuous duty for large-scale rural distribution and municipal infrastructure.\u003c\/p\u003e\u003cp\u003eA 5.5 kW three-phase motor at 415V drives the 32-stage assembly, achieving a maximum head of 182 meters and a peak flow of 220 L\/Min. The motor coupling conforms to NEMA standards, ensuring a secure connection to high-performance submersible borehole motors.\u003c\/p\u003e\u003cp\u003eWithin each stage, LEXAN floating impellers move axially to accommodate sand particles, helping to protect the polycarbonate diffusers from wear and supporting consistent operation throughout the unit's service life.\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 liquid temperatures up to 35°C, the unit 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 reducing internal mechanical binding risk\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers maintain an efficient hydraulic flow path for reduced energy consumption\u003c\/li\u003e\n\u003cli\u003eThirty-two-stage hydraulic assembly delivers 182 meters of head for high-lift borehole recovery\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 internal hydraulics from back-pressure and column weight stress\u003c\/li\u003e\n\u003cli\u003eNEMA-standard coupling enables flexible pairing with standardised submersible 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":50983322714359,"sku":"4SDP 8\/32-W","price":2048.59,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-8-32-w-stainless-steel-4-inch-submersible-bore-pump-high-sand-water.png?v=1785325864","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-8-32-w-stainless-steel-4-inch-submersible-bore-pump-high-sand-water","provider":"Foundation Pumps","version":"1.0","type":"link"}