{"product_id":"lowara-12gs75-3-stainless-steel-4-submersible-bore-pump-for-residential-water-supply-with-floating-impeller","title":"Lowara 12GS75-3 Stainless Steel 4\" Submersible Bore Pump for Residential Water Supply with Floating Impeller","description":"\u003cp\u003eExpansive industrial water supply and demanding agricultural irrigation require pumps that ensure uninterrupted groundwater extraction. The Lowara 12GS75-3, a three-phase submersible bore pump, handles continuous operation from 4-inch boreholes where reliable high-volume, high-head delivery is essential. Its floating impeller configuration supports performance in water containing suspended solids.\u003c\/p\u003e\u003cp\u003eA 7.5 kW three-phase motor on 415 V draws 18.7 Amps during normal operation. Maximum flow reaches 250 L\/Min, while maximum head extends to 178.4 metres at shut-off. The motor requires a minimum fluid velocity of 8 cm\/s around the casing for adequate cooling, and supports up to 30 starts per hour. This combination suits applications requiring extreme lift and substantial volume.\u003c\/p\u003e\u003cp\u003eFloating stack construction permits sand concentrations up to 150 g\/m3 to pass without compromising internal clearances. The hexagonal pump shaft ensures reliable torque transfer across all stages, while the front wear ring works with the floating impeller to improve abrasion resistance. An integrated stainless steel check valve prevents destructive backflow when the motor stops.\u003c\/p\u003e\u003cp\u003ePrecision-cast stainless steel upper and lower support brackets maintain alignment between the pump and motor. The 99 mm casing diameter fits standard 4-inch boreholes, with a 50 mm threaded outlet. Rated for continuous submersion in liquids up to 35°C, the complete package includes a heatshrink kit for waterproof electrical connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKEY FEATURES \u0026amp; BENEFITS\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFloating hydraulic stack allows sand and abrasives to pass without binding\u003c\/li\u003e\n\u003cli\u003eHexagonal stainless steel shaft ensures effective impeller drive without slippage\u003c\/li\u003e\n\u003cli\u003eFront wear ring improves abrasion resistance in sandy groundwater conditions\u003c\/li\u003e\n\u003cli\u003eIntegrated non-return valve stops reverse flow when the pump shuts down\u003c\/li\u003e\n\u003cli\u003eAISI 304 stainless steel casing resists corrosion during long-term submersion\u003c\/li\u003e\n\u003cli\u003eTechnopolymer impeller reduces starting torque for smoother motor operation\u003c\/li\u003e\n\u003cli\u003eSupplied with heatshrink kit for waterproof electrical connections\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lowara","offers":[{"title":"Default Title","offer_id":50985367404791,"sku":"12GS75-3","price":5503.35,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/lowara-12gs75-3-stainless-steel-4-submersible-bore-pump-for-residential-water-supply-with-floating-impeller.png?v=1785405713","url":"https:\/\/foundationpumps.com.au\/products\/lowara-12gs75-3-stainless-steel-4-submersible-bore-pump-for-residential-water-supply-with-floating-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}