{"product_id":"calpeda-4sdp-16-27-w-stainless-steel-4-inch-submersible-bore-pump-municipal-water-supply","title":"Calpeda 4SDP 16\/27-W Stainless Steel 4\" Submersible Bore Pump for Municipal Water Supply with Floating Impellers","description":"\u003cp\u003eMunicipal systems and bulk water distribution requiring extreme hydraulic force from deep 4-inch wells are the primary application for this high-pressure submersible pump. It is designed to handle clean liquids containing sand concentrations up to 300 g\/m³ and supports continuous duty for large civil infrastructure projects.\u003c\/p\u003e\u003cp\u003eA 7.5 kW three-phase motor at 415V drives the 27-stage assembly, achieving a maximum head of 130 meters and a peak flow of 400 L\/Min. The mechanical interface conforms to NEMA standards, ensuring a secure connection to high-output 4-inch submersible borehole motors.\u003c\/p\u003e\u003cp\u003eWithin each stage, LEXAN floating impellers can move axially against polycarbonate diffusers, helping to prevent seizure when sand particles pass through the casing. Consistent operation is maintained during high-capacity transfer duty 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 protect the hydraulics and motor from backflow and reverse rotation 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 while reducing internal mechanical binding risk\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers optimize fluid velocity while reducing internal turbulence and energy consumption\u003c\/li\u003e\n\u003cli\u003eTwenty-seven-stage hydraulic assembly delivers 130 meters of head for high-flow municipal projects\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides structural rigidity and protection against underground corrosion\u003c\/li\u003e\n\u003cli\u003eIntegrated non-return valve protects the system from backflow and reduces water hammer impact\u003c\/li\u003e\n\u003cli\u003eNEMA-standard coupling ensures compatibility 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":50983322910967,"sku":"4SDP 16\/27-W","price":3052.78,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-16-27-w-stainless-steel-4-inch-submersible-bore-pump-municipal-water-supply.png?v=1785325875","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-16-27-w-stainless-steel-4-inch-submersible-bore-pump-municipal-water-supply","provider":"Foundation Pumps","version":"1.0","type":"link"}