{"product_id":"calpeda-4sdp-3-5-w-stainless-steel-4-inch-submersible-bore-pump-domestic-water-supply","title":"Calpeda 4SDP 3\/5-W Stainless Steel 4\" Submersible Bore Pump for Domestic Water Supply with Floating Impellers","description":"\u003cp\u003eDomestic water supply and tank filling from 4-inch borehole sources are well suited to this submersible pump. It handles clean water with suspended sand up to 150 g\/m³ and maintains stable flow during continuous duty for household utilities and garden irrigation.\u003c\/p\u003e\u003cp\u003eDriven by a 0.37 kW three-phase motor at 415V, the 5-stage assembly achieves a peak head of 32 meters and a flow rate of 70 L\/Min. The motor flange coupling conforms to NEMA standards, allowing for reliable synchronisation and standardised mechanical mounting.\u003c\/p\u003e\u003cp\u003eAxial clearance within the hydraulic stages permits the LEXAN floating impellers to move against polycarbonate diffusers, helping to accommodate sand particles without motor seizure. This reduces abrasive wear on internal stages and supports consistent output during 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 protect the system from reverse rotation and water column weight. Rated for immersion in liquids up to 35°C, the unit features Class F insulation, IP68 protection, and a chrome-nickel steel suction lantern with an integrated fine filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLEXAN radial floating impellers facilitate sand passage while reducing internal mechanical binding risk\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers with glass fibre reinforcement offer strength and reduced internal friction\u003c\/li\u003e\n\u003cli\u003eFive-stage radial design delivers 32 meters of head for residential water distribution and tank filling\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 prevents column drainage and protects the motor from reverse rotation\u003c\/li\u003e\n\u003cli\u003eNEMA-standard flange coupling simplifies field installation and allows flexible submersible motor selection\u003c\/li\u003e\n\u003cli\u003eChrome-nickel steel suction lantern with integrated filter blocks mineral debris from the hydraulics\u003c\/li\u003e\n\u003cli\u003eClass F insulation and IP68 protection support continuous duty in fully submerged wells\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50983319961847,"sku":"4SDP 3\/5-W","price":640.48,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-3-5-w-stainless-steel-4-inch-submersible-bore-pump-domestic-water-supply.png?v=1785325815","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-3-5-w-stainless-steel-4-inch-submersible-bore-pump-domestic-water-supply","provider":"Foundation Pumps","version":"1.0","type":"link"}