{"product_id":"calpeda-4sdp-3-11-w-stainless-steel-4-inch-submersible-bore-pump-water-supply","title":"Calpeda 4SDP 3\/11-W Stainless Steel 4\" Submersible Bore Pump for Water Supply with Floating Impellers","description":"\u003cp\u003eLarge residential distribution and agricultural systems benefit from this submersible pump's consistent extraction from 4-inch wells. It handles clean water with suspended sand up to 150 g\/m³ and supports continuous duty for pressurised networks and rural distribution projects.\u003c\/p\u003e\u003cp\u003eA 0.75 kW three-phase motor at 415V drives the 11-stage assembly, achieving a maximum head of 68 meters and a peak flow of 70 L\/Min. The motor coupling conforms to NEMA standards, ensuring secure mechanical synchronisation with various submersible motor frames.\u003c\/p\u003e\u003cp\u003eEach stage features LEXAN floating impellers that can move axially against polycarbonate diffusers, helping to prevent motor seizure when abrasive solids pass through the casing. Hydraulic performance remains stable during high-capacity transfer operations from standard 4-inch well sources.\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 damage during shutdown. Rated for liquids up to 35°C, the assembly features Class F motor insulation and 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 accommodate sand while reducing internal mechanical binding risk\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers improve hydraulic flow and reduce internal energy losses during duty cycles\u003c\/li\u003e\n\u003cli\u003eEleven-stage radial configuration delivers 68 meters of head for domestic and civil water supply systems\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 eliminates the need for external check valves and prevents motor damage from backflow\u003c\/li\u003e\n\u003cli\u003eNEMA-standard coupling simplifies field installation and ensures compatibility with a variety of submersible motors\u003c\/li\u003e\n\u003cli\u003eChrome-nickel steel suction lantern and filter provide a barrier against oversized solids\u003c\/li\u003e\n\u003cli\u003eClass F insulation and IP68 protection support continuous duty in fully submerged environments\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50983321829623,"sku":"4SDP 3\/11-W","price":768.57,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-3-11-w-stainless-steel-4-inch-submersible-bore-pump-water-supply.png?v=1785325819","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-3-11-w-stainless-steel-4-inch-submersible-bore-pump-water-supply","provider":"Foundation Pumps","version":"1.0","type":"link"}