{"product_id":"atlas-copco-weda-s04n-submersible-sludge-pump-0-5-hp-115v-1-phase-2-discharge-1-solids","title":"Atlas Copco WEDA S04N | Submersible Sludge Pump — 0.5 HP, 115V 1-Phase, 2\" Discharge, 1\" Solids","description":"\u003cdiv class=\"weda-sludge-product\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAtlas Copco WEDA S04N\u003c\/strong\u003e is a 0.5 HP (0.4 kW) submersible sludge pump engineered for the wet, gritty, semi-solid liquids that wreck ordinary drainage pumps — wet mud, mining residues, thickened sewage, tank cleanout, and pond bottoms. With a \u003cstrong\u003e1-inch solids-handling capacity\u003c\/strong\u003e, a 115V single-phase plug-and-play motor, and a 2-inch NPT discharge, the S04N is the smallest pump in the WEDA Sludge range and the most accessible entry point into Atlas Copco's industrial dewatering line.\u003c\/p\u003e\n\n\u003ch2\u003ePerformance Snapshot\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Head\u003c\/th\u003e\n\u003ctd\u003e33 ft (10 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Flow\u003c\/th\u003e\n\u003ctd\u003e62 gpm (3.9 L\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Solids\u003c\/th\u003e\n\u003ctd\u003e1 in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDischarge\u003c\/th\u003e\n\u003ctd\u003e2\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated Output\u003c\/th\u003e\n\u003ctd\u003e0.5 HP (0.4 kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Power Input\u003c\/th\u003e\n\u003ctd\u003e0.7 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Speed\u003c\/th\u003e\n\u003ctd\u003e3,500 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e115V, 60 Hz, single-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated Current\u003c\/th\u003e\n\u003ctd\u003e5.8 A @ 115V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e24 lb (10.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H × W × D)\u003c\/th\u003e\n\u003ctd\u003e14.8\" × 10.9\" × 9.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Fluid Temperature\u003c\/th\u003e\n\u003ctd\u003e95°F (35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSubmerged Depth\u003c\/th\u003e\n\u003ctd\u003eup to 16 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003epH Tolerance\u003c\/th\u003e\n\u003ctd\u003e6.5 – 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eUL listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number \/ SKU\u003c\/th\u003e\n\u003ctd\u003e8162172900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e12 months from start-up \/ 18 months from receipt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy a Sludge Pump and Not a Drainage Pump\u003c\/h2\u003e\n\n\u003cp\u003eDrainage pumps are designed around impellers that maximize hydraulic efficiency for clean water — they jam, abrade, or wear out quickly when they hit grit, fibrous matter, or thickened liquids. The WEDA S04N uses a \u003cstrong\u003evortex impeller in high-chrome cast iron\u003c\/strong\u003e, set back into the volute so solids pass through the eye of the rotation rather than being chopped by the blade. This costs a small amount of peak efficiency at clean-water duty but gives the S04N something a drainage pump can't match: \u003cem\u003ethe ability to keep pumping when the fluid thickens, scums up, or carries 1-inch particulates\u003c\/em\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eBuilt for the Worst of It\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble mechanical seal in a stainless-steel cartridge\u003c\/strong\u003e — the primary seal runs in oil; the secondary blocks any path between the medium and the motor. The cartridge design means the seal is replaced as a unit, not piece-by-piece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVortex-style high-chrome cast-iron impeller\u003c\/strong\u003e — abrasive-resistant alloy, low-clog geometry, optimized for solids up to 1\".\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum-alloy body\u003c\/strong\u003e — light enough that one person can carry and place the pump; corrosion-resistant for sustained immersion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass E motor insulation\u003c\/strong\u003e with thermal protection — automatic shutdown on overtemperature, then auto-restart when the motor cools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry-running tolerance\u003c\/strong\u003e — the carefully oversized motor and heat-dissipating jacket design allow the S04N to run dry without immediate damage if the sump drops below the inlet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e33 ft of integrated power cable\u003c\/strong\u003e — long enough for typical pit and tank applications without dragging out an extension cord.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon Applications\u003c\/h2\u003e\n\n\u003cp\u003eThe S04N is at home wherever the fluid is too dirty for a clean-water pump but too thin to call a slurry pump:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction site sumps\u003c\/strong\u003e with mud and sediment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSewage and bypass pumping\u003c\/strong\u003e — gravity-line maintenance, lift-station service\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlum sludge removal\u003c\/strong\u003e at potable water and wastewater treatment plants\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank and basin cleanout\u003c\/strong\u003e — process tanks, settling basins, retention ponds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight dredging and waterway maintenance\u003c\/strong\u003e — sediment removal, surface contaminant clearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMining and quarry trench cleanout\u003c\/strong\u003e — small-bore work where the larger S30N is overkill\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgricultural and dairy operations\u003c\/strong\u003e — manure pit edges, washdown sumps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency response\u003c\/strong\u003e — flood cleanup where water is mixed with mud and debris\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWEDA Range Compatibility\u003c\/h2\u003e\n\n\u003cp\u003eThe S04N shares the WEDA Sludge family architecture with the S08N, S30N, S50N, and S60N — meaning operators familiar with one are productive on all. Common service kits, common cable terminations, common float-switch accessories. If your job site grows into a bigger pump, the operating knowledge transfers directly.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Ships in the Box\u003c\/h2\u003e\n\n\u003cp\u003eThe pump comes ready to run: 33 ft of cable terminated for a standard 115V outlet, integrated thermal protection, factory-set seal cartridge, and the 2\" NPT discharge connection. Float switches, control panels, level regulators, and longer cable runs are available as accessories — contact us if your install needs more than what's standard.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSKU 8162172900\u003c\/strong\u003e · WEDA S04N · 115V 1-Phase 60 Hz · 2\" NPT discharge · 1\" solids · UL listed. Backed by Atlas Copco's North American service network.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Atlas Copco","offers":[{"title":"Default Title","offer_id":54217172713747,"sku":"8162172900","price":350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/S08N.png?v=1780350673","url":"https:\/\/aircompressorstore.com\/products\/atlas-copco-weda-s04n-submersible-sludge-pump-0-5-hp-115v-1-phase-2-discharge-1-solids","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}