{"product_id":"tsurumi-lh311w-cast-iron-high-lift-submersible-drainage-pump-for-deep-wells-with-dual-closed-impellers","title":"Tsurumi LH311W Cast Iron High Lift Submersible Drainage Pump for Deep Wells with Dual Closed Impellers","description":"\u003cp\u003eWhen extreme vertical lifts are required to keep deep excavation sites dry, standard pumps simply cannot bridge the gap. The Tsurumi LH311W steps in to conquer these immense elevations, ensuring your foundational works remain free from disruptive water ingress. Its high-head specialization makes it an indispensable asset for large-scale subterranean projects.\u003c\/p\u003e\n\u003cp\u003eThis heavy-duty three-phase unit is driven by an 11 kW motor, operating at 415 V with a rated current of 22 Amps. It achieves a remarkable maximum head of 81 m and a substantial maximum flow of 700 L\/Min. These specifications highlight its ability to push large volumes of fluid against extreme gravitational resistance without faltering.\u003c\/p\u003e\n\u003cp\u003eFluid dynamics are managed by dual closed impellers capable of handling 8.5mm solids, ensuring uninterrupted operation even when the water contains granular debris. The top-discharge configuration not only facilitates installation in narrow casings but also guarantees the motor is continuously cooled by the pumped liquid, allowing for safe operation at varying submersion depths.\u003c\/p\u003e\n\u003cp\u003eThe mechanical architecture features a cast iron body and a robust 420 stainless steel shaft, supported by a duplex angular contact ball bearing setup. This specialized bearing arrangement effectively absorbs the intense axial thrust generated by high-head pumping. A double-face mechanical seal in an oil chamber provides the ultimate barrier against liquid penetration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e Mounted back-to-back in the lower section to expertly manage extreme thrust loads and stabilize the shaft.\u003c\/li\u003e\n\u003cli\u003e Dual configuration designed to maximize vertical lift while resisting wear from suspended sand and grit.\u003c\/li\u003e\n\u003cli\u003e Vents high casing pressure away from the mechanical seal, protecting vital components from abrasive damage.\u003c\/li\u003e\n\u003cli\u003e Guarantees continuous lubrication of the mechanical seal faces, dramatically reducing the risk of dry-running failure.\u003c\/li\u003e\n\u003cli\u003e Directly monitors motor temperature and current, instantly cutting power if hazardous operating conditions arise.\u003c\/li\u003e\n\u003cli\u003e Includes a zinc anode to protect the cast iron casing from electrochemical degradation in harsh water conditions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tsurumi","offers":[{"title":"Default Title","offer_id":50934167208183,"sku":"LH311W","price":0.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/tsurumi-lh311w-cast-iron-high-lift-submersible-drainage-pump-for-deep-wells-with-dual-closed-impellers.png?v=1783937853","url":"https:\/\/foundationpumps.com.au\/products\/tsurumi-lh311w-cast-iron-high-lift-submersible-drainage-pump-for-deep-wells-with-dual-closed-impellers","provider":"Foundation Pumps","version":"1.0","type":"link"}