{"product_id":"calpeda-4sdp-2-28-w-stainless-steel-4-inch-submersible-bore-pump-farm-water-supply","title":"Calpeda 4SDP 2\/28-W Stainless Steel 4\" Submersible Bore Pump for Farm Water Supply with Floating Impellers","description":"\u003cp\u003eWater reticulation systems requiring high-lift groundwater recovery from deep 4-inch wells are the primary application for this submersible pump. It processes clean water with suspended sand up to 150 g\/m³ and supports continuous service duty for high-pressure distribution networks.\u003c\/p\u003e\u003cp\u003eA 1.5 kW motor on a 415V supply drives the 28-stage assembly, achieving a peak head of 178 meters and a maximum flow of 50 L\/Min. The motor coupling conforms to NEMA standards, providing a standardised mechanical interface for simplified maintenance.\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. This design supports consistent pressure stability throughout the unit's service life in deep borehole conditions.\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 liquid temperatures up to 35°C, the unit includes a chrome-nickel steel suction filter and a Class F insulated motor frame.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLEXAN radial floating impellers accommodate sand ingress while reducing internal mechanical seizure risk\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers maintain an efficient hydraulic flow path for reduced energy consumption\u003c\/li\u003e\n\u003cli\u003eTwenty-eight-stage hydraulic assembly delivers 178 meters of head for deep-well recovery and high-lift supply\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides resistance to subterranean oxidation and borehole stress\u003c\/li\u003e\n\u003cli\u003eNon-return valve protects the internal hydraulics from back-pressure and water hammer\u003c\/li\u003e\n\u003cli\u003eNEMA-standard motor coupling enables flexible pairing with a variety of 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 supports prolonged operation in submerged conditions\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50983319863543,"sku":"4SDP 2\/28-W","price":1577.35,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-2-28-w-stainless-steel-4-inch-submersible-bore-pump-farm-water-supply.png?v=1785325812","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-2-28-w-stainless-steel-4-inch-submersible-bore-pump-farm-water-supply","provider":"Foundation Pumps","version":"1.0","type":"link"}