{"product_id":"calpeda-4sdp-16-11-w-stainless-steel-4-inch-submersible-bore-pump-agricultural-irrigation","title":"Calpeda 4SDP 16\/11-W Stainless Steel 4\" Submersible Bore Pump for Agricultural Irrigation with Floating Impellers","description":"\u003cp\u003eAgricultural projects and large-scale residential distribution requiring bulk hydraulic delivery from 4-inch well sources are the primary application for this submersible pump. It handles clean liquids containing suspended sand up to 300 g\/m³ and supports continuous service for high-volume irrigation supply and tank systems.\u003c\/p\u003e\u003cp\u003eA 3 kW three-phase motor at 415V drives the 11-stage assembly, achieving a peak head of 55 meters and a flow rate of 400 L\/Min. Mechanical standardisation is preserved via NEMA coupling, ensuring seamless integration with high-output submersible motor frames.\u003c\/p\u003e\u003cp\u003eAxial movement of the LEXAN floating impellers within each stage helps to accommodate sand particles and protect the polycarbonate diffusers from wear. High energy efficiency is maintained during high-capacity bulk transfer 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 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 filter.\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\u003eHigh-performance polycarbonate diffusers maintain a smooth hydraulic flow path for improved energy efficiency\u003c\/li\u003e\n\u003cli\u003eEleven-stage high-flow hydraulic assembly delivers 55 meters of head for bulk water and irrigation projects\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides corrosion resistance in aggressive subterranean wells\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 with fine-mesh filter prevents debris entry into the hydraulics\u003c\/li\u003e\n\u003cli\u003eClass F insulation and IP68 protection support continuous duty in fully submerged well environments\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50983322779895,"sku":"4SDP 16\/11-W","price":1416.53,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-16-11-w-stainless-steel-4-inch-submersible-bore-pump-agricultural-irrigation.png?v=1785325868","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-16-11-w-stainless-steel-4-inch-submersible-bore-pump-agricultural-irrigation","provider":"Foundation Pumps","version":"1.0","type":"link"}