{"product_id":"davey-d75g-cast-iron-double-mechanical-seal-submersible-grinder-pump-for-grey-water-with-open-impeller","title":"Davey D75G Cast Iron Double Mechanical Seal Submersible Grinder Pump for Grey Water with Open Impeller","description":"\u003cp\u003eManaging domestic sewage and septic effluent in residential pits requires a specialized hydraulic solution capable of reducing solids to a manageable slurry. The Davey D75G is an advanced manual grinder pump engineered to handle black water and grey water containing soft organic solids and sanitary products. By utilizing a heavy-duty shredding and grinding ring at the inlet, the unit prevents blockages in small-diameter discharge pipe systems. This centrifugal unit is specifically designed for sump emptying and water transfer in environments where standard dewatering pumps would fail due to solid accumulation.\u003c\/p\u003e\n\u003cp\u003eHydraulic force is provided by a 0.75 kW single-phase motor operating on a standard 240v supply to satisfy demanding residential discharge requirements. The assembly delivers a maximum flow rate of approximately 150 L\/Min and reaches a maximum total head of 18.5 metres to support connection to pressure sewer mains. An electrical configuration maintaining a 7.5 Amps full load current ensures consistent performance at a synchronous speed of 2900rpm. This robust profile allows for the efficient evacuation of waste water through the 1 1\/4\" BSP F outlet port.\u003c\/p\u003e\n\u003cp\u003eThe internal shredding system features a high chromium steel grinding ring and shredding ring that aggressively macerates textiles and soft solids. This mechanism works in tandem with a cast iron open impeller to maintain high fluid velocity and prevent internal clogging. By shredding waste into a slurry, the pump allows for the use of smaller, more cost-effective piping for long-distance effluent disposal. The centrifugal design is optimized for continuous reliability in sub-surface domestic pits.\u003c\/p\u003e\n\u003cp\u003eMechanical integrity is reinforced by a heavy-duty powder-coated cast iron pump body and a 304 stainless steel motor shell. Motor protection is achieved through a double mechanical shaft seal in an oil bath, utilizing hard-faced silicon carbide and ceramic materials on the pump side. For operational security, the unit includes an automatic resetting thermal overload and a 10-metre HO7RN-F oil-resistant lead. The architectural casting includes mounting feet with rubber cushions for a stable and firm installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-duty high chromium steel shredding and grinding ring at the inlet macerates solids into a slurry.\u003c\/li\u003e\n\u003cli\u003eOpen centrifugal cast iron impeller prevents internal blockages while maintaining high head discharge.\u003c\/li\u003e\n\u003cli\u003eDouble mechanical shaft seal in an oil bath with silicon carbide faces ensures maximum motor insulation.\u003c\/li\u003e\n\u003cli\u003eCorrosive resistant 304 stainless steel motor shell and fasteners provide lasting structural integrity.\u003c\/li\u003e\n\u003cli\u003eIntegrated mounting feet with rubber cushions ensure firm and stable positioning in the pit.\u003c\/li\u003e\n\u003cli\u003eAutomatic resetting thermal overload protects the 0.75 kW motor from electrical and thermal stress.\u003c\/li\u003e\n\u003cli\u003eHO7RN-F 10 metre oil-resistant power lead with bare wire ends for professional termination.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Davey","offers":[{"title":"Default Title","offer_id":50866544247031,"sku":"D75G","price":1649.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/davey-d75g-cast-iron-double-mechanical-seal-submersible-grinder-pump-for-grey-water-with-open-impeller.png?v=1781604291","url":"https:\/\/foundationpumps.com.au\/products\/davey-d75g-cast-iron-double-mechanical-seal-submersible-grinder-pump-for-grey-water-with-open-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}