{"product_id":"calpeda-4sdp-2-7-w-stainless-steel-4-inch-submersible-bore-pump-tank-filling","title":"Calpeda 4SDP 2\/7-W Stainless Steel 4\" Submersible Bore Pump for Tank Filling with Floating Impellers","description":"\u003cp\u003eCivil installations and domestic utilities requiring efficient water delivery from deep borehole sources are well suited to this submersible pump. It handles clean water with sand concentrations up to 150 g\/m³ without risking internal blockage, supporting long-term service in applications requiring stable pressure output.\u003c\/p\u003e\u003cp\u003eA 0.37 kW motor on a 415V supply drives the 7-stage assembly, achieving a peak head of 43 meters and a maximum flow of 50 L\/Min. Mechanical standardisation is preserved via NEMA coupling, ensuring seamless integration with various brands of 4-inch submersible motors.\u003c\/p\u003e\u003cp\u003eHigh-strength LEXAN floating impellers move axially against polycarbonate diffusers, helping to maintain operation when sand enters the stage casing. This floating arrangement reduces the likelihood of impeller lock and contributes to reliable operation in sediment-bearing water.\u003c\/p\u003e\u003cp\u003eAISI 304 stainless steel forms the external jacket, with a chrome-nickel steel delivery casing and a non-return valve in the discharge port. This valve prevents column drainage and protects the hydraulics from reverse rotation. Rated for water temperatures up to 35°C, the unit 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 accommodate sand ingress while reducing pump seizure risk in sediment-rich water\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate diffusers improve hydraulic flow and reduce internal energy losses during continuous duty\u003c\/li\u003e\n\u003cli\u003eSeven-stage hydraulic configuration is designed for high-pressure delivery in domestic and civil water supply networks\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel external jacket provides corrosion resistance in aggressive subterranean environments\u003c\/li\u003e\n\u003cli\u003eNon-return valve protects the motor and stages from backflow-related mechanical stress 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 with fine-mesh filter prevents debris ingress and protects internal components\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":50983319634167,"sku":"4SDP 2\/7-W","price":707.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-4sdp-2-7-w-stainless-steel-4-inch-submersible-bore-pump-tank-filling.png?v=1785325805","url":"https:\/\/foundationpumps.com.au\/products\/calpeda-4sdp-2-7-w-stainless-steel-4-inch-submersible-bore-pump-tank-filling","provider":"Foundation Pumps","version":"1.0","type":"link"}