{"product_id":"grundfos-45s-sp-4-in-submersible-pump-end","title":"Grundfos 45S SP 4 in Submersible Pump End","description":"\u003c!-- TABS --\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\n\n\u003cdiv class=\"gs-head\"\u003e\n\u003cdiv class=\"gs-eyebrow\"\u003eGrundfos · Submersible Pump End\u003c\/div\u003e\n\u003cdiv class=\"gs-title\"\u003e45S SP 4 in Pump End\u003c\/div\u003e\n\u003cdiv class=\"gs-sub\"\u003e45 GPM class stainless steel SP pump end, motor not included: 26 builds for 1 to 25 HP motors, on 4 in and 6 in motors.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-badges\"\u003e\n\u003cdiv class=\"gs-badge\"\u003e45 GPM Rated Flow\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003e1-25 HP\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003e72-1,613 ft Nominal Head\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003e2 in NPT Discharge\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003e4 in and 6 in Motor Fit\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003eNEMA Motor Flange\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003eBuilt-In Check Valve\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003eAISI 304 Stainless Steel\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003ecCSAus\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003e11.2-149.3 lb Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#FFFFFF;border:1px solid #C7CBD1;border-top:3px solid #B3122A;padding:12px 16px 12px;margin:16px 0 4px;font-size:13.5px;line-height:1.55;color:#4A4A4F\"\u003e\n\u003cdiv style=\"font-family:Arial Black,Arial,sans-serif;font-size:11px;letter-spacing:1.2px;text-transform:uppercase;color:#B3122A;margin-bottom:8px\"\u003eWhat Ships and What It Needs to Run\u003c\/div\u003e\n\u003cp style=\"margin:0 0 6px\"\u003e\u003cstrong style=\"color:#B3122A\"\u003eIncluded:\u003c\/strong\u003e the Grundfos 45S SP pump end with its built-in check valve; DS builds come built into a stainless steel sleeve.\u003c\/p\u003e\n\u003cp style=\"margin:0\"\u003e\u003cstrong style=\"color:#B3122A\"\u003eSubmersible motor required, ordered separately.\u003c\/strong\u003e The pump end mounts on a 4 in or 6 in submersible motor with a NEMA motor flange, plus the motor’s control: a control box for a single-phase 3-wire motor, or a starter or drive for a three-phase motor. The motor horsepower and diameter for each build are in the Models \u0026amp; Ratings table.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eOverview\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cp\u003eThe Grundfos 45S is the 45 GPM class of the SP 4 in submersible range, sold here as the pump end alone: stainless steel chambers and impellers with a built-in check valve, ready to mount on a submersible motor. Pump and impellers are AISI 304 stainless steel. Use it to rebuild an SP installation on a sound motor, or to build a pump around a motor you already have; the complete 45S pump with a Grundfos motor is listed separately.\u003c\/p\u003e\n\u003cp\u003eThe 45S pump end has a NEMA motor flange. Match the motor horsepower and diameter in the selector, and the flange to your motor; send us the motor model and we will confirm the fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#E1E3E6;border-left:3px solid #B8BDC4;padding:8px 14px;font-size:11.5px;color:#4A4A4F;margin-top:14px;line-height:1.5\"\u003eGenuine Grundfos equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\u003cp\u003e24 months from date of installation, but not more than 30 months from date of manufacture. In Grundfos's words, products are “warranted to the original user only to be free of defects in material and workmanship”; the full terms are in the installation and operating instructions on the Data Sheet tab.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eSingle Pump or a Set?\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\u003cp\u003eEach pump end builds one pump for one well. For a duty\/standby pair, or a flow outside the 45S range, send us the duty: the other SP 4 in flow classes run from 5 to 77 GPM, and we will size the set with you.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eCheck the Part Number\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cp\u003eThe model code reads flow class, horsepower and stages: \u003cstrong\u003e45S100-25\u003c\/strong\u003e is the 45S for a 10 HP motor with 25 stages. In the selector, choose the motor horsepower and diameter first, then the model; each model shows the head it adds at 45 GPM. Order by part number; every build is in the Models \u0026amp; Ratings table.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e45S200-40DS, 45S200-43DS, 45S200-47DS, 45S200-51DS, 45S250-54DS, 45S250-57DS, 45S250-60DS, 45S250-63DS\u003c\/strong\u003e: DS (deep set) builds, built into a stainless steel sleeve with an NPT male discharge.\u003c\/li\u003e\n\u003cli\u003eSome models come in a 4 in motor build and a 6 in motor build under different part numbers; the selector shows the motor size with the horsepower.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eModels \u0026amp; Ratings\u003c\/div\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"gs-tbl\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003eMotor HP\u003c\/th\u003e\n\u003cth\u003eMotor\u003c\/th\u003e\n\u003cth\u003eDischarge\u003c\/th\u003e\n\u003cth\u003eMin. Well\u003c\/th\u003e\n\u003cth\u003eNominal Head at 45 GPM, ft\u003c\/th\u003e\n\u003cth\u003eNet Weight, lb\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S10-3\u003c\/td\u003e\n\u003ctd\u003e98914842\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e72-73\u003c\/td\u003e\n\u003ctd\u003e11.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S15-4\u003c\/td\u003e\n\u003ctd\u003e98924047\u003c\/td\u003e\n\u003ctd\u003e1-1\/2\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e97-99\u003c\/td\u003e\n\u003ctd\u003e12.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S20-5\u003c\/td\u003e\n\u003ctd\u003e98924048\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e123-124\u003c\/td\u003e\n\u003ctd\u003e13.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S30-7\u003c\/td\u003e\n\u003ctd\u003e98865395\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e174-178\u003c\/td\u003e\n\u003ctd\u003e16.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S50-9\u003c\/td\u003e\n\u003ctd\u003e98924049\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e234\u003c\/td\u003e\n\u003ctd\u003e19.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S50-12\u003c\/td\u003e\n\u003ctd\u003e98924050\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e306\u003c\/td\u003e\n\u003ctd\u003e22.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S75-15\u003c\/td\u003e\n\u003ctd\u003e98924051\u003c\/td\u003e\n\u003ctd\u003e7-1\/2\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e386\u003c\/td\u003e\n\u003ctd\u003e26.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S75-18\u003c\/td\u003e\n\u003ctd\u003e98924052\u003c\/td\u003e\n\u003ctd\u003e7-1\/2\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e458\u003c\/td\u003e\n\u003ctd\u003e30.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S75-15\u003c\/td\u003e\n\u003ctd\u003e98924055\u003c\/td\u003e\n\u003ctd\u003e7-1\/2\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e388-390\u003c\/td\u003e\n\u003ctd\u003e30.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S75-18\u003c\/td\u003e\n\u003ctd\u003e98924056\u003c\/td\u003e\n\u003ctd\u003e7-1\/2\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e460-463\u003c\/td\u003e\n\u003ctd\u003e34.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S100-22\u003c\/td\u003e\n\u003ctd\u003e98924053\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e564\u003c\/td\u003e\n\u003ctd\u003e35.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S100-25\u003c\/td\u003e\n\u003ctd\u003e98924054\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e632\u003c\/td\u003e\n\u003ctd\u003e39.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S100-22\u003c\/td\u003e\n\u003ctd\u003e98924058\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e564-568\u003c\/td\u003e\n\u003ctd\u003e39.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S100-25\u003c\/td\u003e\n\u003ctd\u003e98924059\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e632-640\u003c\/td\u003e\n\u003ctd\u003e43.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S150-28\u003c\/td\u003e\n\u003ctd\u003e98924060\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e727-729\u003c\/td\u003e\n\u003ctd\u003e50.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S150-31\u003c\/td\u003e\n\u003ctd\u003e98924061\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e801-803\u003c\/td\u003e\n\u003ctd\u003e54.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S150-34\u003c\/td\u003e\n\u003ctd\u003e98924062\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e869-876\u003c\/td\u003e\n\u003ctd\u003e58.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S150-37\u003c\/td\u003e\n\u003ctd\u003e98924063\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT female\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e939-942\u003c\/td\u003e\n\u003ctd\u003e62.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S200-40DS\u003c\/td\u003e\n\u003ctd\u003e98924064\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1037-1044\u003c\/td\u003e\n\u003ctd\u003e105.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S200-43DS\u003c\/td\u003e\n\u003ctd\u003e98924066\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1105-1118\u003c\/td\u003e\n\u003ctd\u003e110.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S200-47DS\u003c\/td\u003e\n\u003ctd\u003e98924067\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1199-1216\u003c\/td\u003e\n\u003ctd\u003e118.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S200-51DS\u003c\/td\u003e\n\u003ctd\u003e98924068\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1291-1392\u003c\/td\u003e\n\u003ctd\u003e126.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S250-54DS\u003c\/td\u003e\n\u003ctd\u003e98924069\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1389-1405\u003c\/td\u003e\n\u003ctd\u003e132.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S250-57DS\u003c\/td\u003e\n\u003ctd\u003e98924070\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1460-1471\u003c\/td\u003e\n\u003ctd\u003e137.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S250-60DS\u003c\/td\u003e\n\u003ctd\u003e98924071\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1530-1543\u003c\/td\u003e\n\u003ctd\u003e143.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45S250-63DS\u003c\/td\u003e\n\u003ctd\u003e98924072\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e2 in NPT male\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003e1599-1613\u003c\/td\u003e\n\u003ctd\u003e149.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:12.5px;color:#9B9EA3;margin-top:8px;line-height:1.55\"\u003ePart numbers, horsepower, motor size and minimum well: Grundfos US price list, effective January 1, 2026. Nominal head: Grundfos SP data booklet, 60 Hz, May 2026 (complete-pump tables for the same model and motor size; where two figures are shown, builds on different motors or voltages differ slightly). Discharge thread and net weight of the pump end: Grundfos Product Center.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eShared Specifications\u003c\/div\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"gs-tbl\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated flow\u003c\/td\u003e\n\u003ctd\u003e45 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor horsepower\u003c\/td\u003e\n\u003ctd\u003e1 to 25 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor\u003c\/td\u003e\n\u003ctd\u003e4 in or 6 in submersible motor, NEMA motor flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge\u003c\/td\u003e\n\u003ctd\u003e2 in NPT; male on DS builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum well\u003c\/td\u003e\n\u003ctd\u003e4 \/ 6 in (per build, Models \u0026amp; Ratings table)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCheck valve\u003c\/td\u003e\n\u003ctd\u003eBuilt in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiquid temperature\u003c\/td\u003e\n\u003ctd\u003eUp to 140°F (60°C) at the pump end; the motor sets the working limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003ecCSAus and CULDWUS (Grundfos Product Center codes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurve tolerance\u003c\/td\u003e\n\u003ctd\u003eISO 9906\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003ePump end only; motor and its control ordered separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003ePerformance — Will It Do What You Need?\u003c\/div\u003e\n\u003cp style=\"font-size:13.5px;margin-bottom:10px\"\u003eEvery 45S is rated at \u003cstrong\u003e45 GPM\u003c\/strong\u003e. The nominal head in the Models \u0026amp; Ratings table is the total head Grundfos publishes for each model at that rated flow, in feet. Pick a model whose nominal head covers your pumping level plus the pressure you need at the surface (2.31 ft per psi) plus pipe friction.\u003c\/p\u003e\n\u003cp style=\"font-size:12.5px;color:#9B9EA3;margin-top:8px;line-height:1.55\"\u003eSource: Grundfos SP data booklet, 60 Hz, May 2026 (SP 45S tables, pages 51-55). Performance conforms to ISO 9906. The 45S head and power curves are in the product images, and the 45S data sheet on the Data Sheet tab carries the full curves and tables.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 4px\"\u003e\n\u003ca href=\"\/pages\/submersible-well-pump-sizing-calculator\" style=\"flex:1 1 200px;text-align:center;display:block;background:#B3122A;color:#ffffff;font-family:Arial Black,Arial,sans-serif;font-size:12px;text-transform:uppercase;letter-spacing:1.2px;padding:11px 18px;text-decoration:none\"\u003eSubmersible Calculator\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eBefore You Buy — The Limits That Decide the Fit\u003c\/div\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"gs-tbl\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eWhat to confirm\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor\u003c\/td\u003e\n\u003ctd\u003eA 4 in or 6 in submersible motor of the horsepower in the selector, with a NEMA motor flange; ordered separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor control\u003c\/td\u003e\n\u003ctd\u003eControl box for a single-phase 3-wire motor; starter or drive for a three-phase motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWell size\u003c\/td\u003e\n\u003ctd\u003eCasing ID at least the minimum well for the build (Models \u0026amp; Ratings table)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDuty point\u003c\/td\u003e\n\u003ctd\u003eChoose the model from the Grundfos curve at your flow and total head. Send us the pumping level, pipe run and pressure and we will check it against the curve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eMaterials of Construction\u003c\/div\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"gs-tbl\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump\u003c\/td\u003e\n\u003ctd\u003eStainless steel, EN 1.4301 (AISI 304)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpellers\u003c\/td\u003e\n\u003ctd\u003eStainless steel, EN 1.4301 (AISI 304)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:12.5px;color:#9B9EA3;margin-top:8px;line-height:1.55\"\u003eSource: Grundfos Product Center.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gs-contact\"\u003eFor engineering-led sizing and selection support or a factory submittal, email \u003ca href=\"mailto:sales@watermainsupply.com\"\u003esales@watermainsupply.com\u003c\/a\u003e or call \u003ca href=\"tel:18885104036\"\u003e1-888.510.4036\u003c\/a\u003e.\u003cbr\u003e© Watermain Supply — A division of E4 Industrial LLC\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch5\u003eData Sheet\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\n\u003cdiv class=\"gs-dl\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/Grundfos-SP-45S-Data-Sheet-60Hz.pdf?v=1790906035\" target=\"_blank\" rel=\"noopener\"\u003eSP 45S Data Sheet, 60 Hz\u003c\/a\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/Grundfos-SP-SPE-Installation-Operating-Instructions.pdf?v=1790731395\" target=\"_blank\" rel=\"noopener\"\u003eSP\/SPE Installation and Operating Instructions\u003c\/a\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/Grundfos-MS-MMS-Submersible-Motor-Guide.pdf?v=1790731394\" target=\"_blank\" rel=\"noopener\"\u003eMS\/MMS Submersible Motor Guide\u003c\/a\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/Grundfos-SP-Submersible-Pumps-Brochure.pdf?v=1790731387\" target=\"_blank\" rel=\"noopener\"\u003eSP Submersible Pumps Brochure\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch5\u003eVideos\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\u003cdiv class=\"gs-sec\" style=\"margin-top:6px\"\u003e\n\u003cp style=\"font-size:13px;color:#9B9EA3\"\u003eProduct videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c!-- \/TABS --\u003e","brand":"Grundfos","offers":[{"title":"1 HP - 4 in Motor \/ 45S10-3 - 72-73 ft at 45 GPM","offer_id":50562916647087,"sku":"98914842","price":1276.76,"currency_code":"USD","in_stock":true},{"title":"1-1\/2 HP - 4 in Motor \/ 45S15-4 - 97-99 ft at 45 GPM","offer_id":50562916679855,"sku":"98924047","price":1301.88,"currency_code":"USD","in_stock":true},{"title":"2 HP - 4 in Motor \/ 45S20-5 - 123-124 ft at 45 GPM","offer_id":50562916712623,"sku":"98924048","price":1276.0,"currency_code":"USD","in_stock":true},{"title":"3 HP - 4 in Motor \/ 45S30-7 - 174-178 ft at 45 GPM","offer_id":50562916745391,"sku":"98865395","price":1673.31,"currency_code":"USD","in_stock":true},{"title":"5 HP - 4 in Motor \/ 45S50-9 - 234 ft at 45 GPM","offer_id":50562916778159,"sku":"98924049","price":2770.11,"currency_code":"USD","in_stock":true},{"title":"5 HP - 4 in Motor \/ 45S50-12 - 306 ft at 45 GPM","offer_id":50562916810927,"sku":"98924050","price":3220.66,"currency_code":"USD","in_stock":true},{"title":"7-1\/2 HP - 4 in Motor \/ 45S75-15 - 386 ft at 45 GPM","offer_id":50562916843695,"sku":"98924051","price":4596.79,"currency_code":"USD","in_stock":true},{"title":"7-1\/2 HP - 4 in Motor \/ 45S75-18 - 458 ft at 45 GPM","offer_id":50562916876463,"sku":"98924052","price":5348.03,"currency_code":"USD","in_stock":true},{"title":"7-1\/2 HP - 6 in Motor \/ 45S75-15 - 388-390 ft at 45 GPM","offer_id":50562916909231,"sku":"98924055","price":4596.79,"currency_code":"USD","in_stock":true},{"title":"7-1\/2 HP - 6 in Motor \/ 45S75-18 - 460-463 ft at 45 GPM","offer_id":50562916941999,"sku":"98924056","price":5348.03,"currency_code":"USD","in_stock":true},{"title":"10 HP - 4 in Motor \/ 45S100-22 - 564 ft at 45 GPM","offer_id":50562916974767,"sku":"98924053","price":6096.99,"currency_code":"USD","in_stock":true},{"title":"10 HP - 4 in Motor \/ 45S100-25 - 632 ft at 45 GPM","offer_id":50562917007535,"sku":"98924054","price":7565.21,"currency_code":"USD","in_stock":true},{"title":"10 HP - 6 in Motor \/ 45S100-22 - 564-568 ft at 45 GPM","offer_id":50562917040303,"sku":"98924058","price":6096.99,"currency_code":"USD","in_stock":true},{"title":"10 HP - 6 in Motor \/ 45S100-25 - 632-640 ft at 45 GPM","offer_id":50562917073071,"sku":"98924059","price":7565.21,"currency_code":"USD","in_stock":true},{"title":"15 HP - 6 in Motor \/ 45S150-28 - 727-729 ft at 45 GPM","offer_id":50562917105839,"sku":"98924060","price":8888.83,"currency_code":"USD","in_stock":true},{"title":"15 HP - 6 in Motor \/ 45S150-31 - 801-803 ft at 45 GPM","offer_id":50562917138607,"sku":"98924061","price":9437.15,"currency_code":"USD","in_stock":true},{"title":"15 HP - 6 in Motor \/ 45S150-34 - 869-876 ft at 45 GPM","offer_id":50562917171375,"sku":"98924062","price":9951.68,"currency_code":"USD","in_stock":true},{"title":"15 HP - 6 in Motor \/ 45S150-37 - 939-942 ft at 45 GPM","offer_id":50562917204143,"sku":"98924063","price":10461.64,"currency_code":"USD","in_stock":true},{"title":"20 HP - 6 in Motor \/ 45S200-40DS - 1037-1044 ft at 45 GPM","offer_id":50562917236911,"sku":"98924064","price":13355.21,"currency_code":"USD","in_stock":true},{"title":"20 HP - 6 in Motor \/ 45S200-43DS - 1105-1118 ft at 45 GPM","offer_id":50562917269679,"sku":"98924066","price":14046.54,"currency_code":"USD","in_stock":true},{"title":"20 HP - 6 in Motor \/ 45S200-47DS - 1199-1216 ft at 45 GPM","offer_id":50562917302447,"sku":"98924067","price":14704.16,"currency_code":"USD","in_stock":true},{"title":"20 HP - 6 in Motor \/ 45S200-51DS - 1291-1392 ft at 45 GPM","offer_id":50562917335215,"sku":"98924068","price":15363.3,"currency_code":"USD","in_stock":true},{"title":"25 HP - 6 in Motor \/ 45S250-54DS - 1389-1405 ft at 45 GPM","offer_id":50562917367983,"sku":"98924069","price":15932.63,"currency_code":"USD","in_stock":true},{"title":"25 HP - 6 in Motor \/ 45S250-57DS - 1460-1471 ft at 45 GPM","offer_id":50562917400751,"sku":"98924070","price":16548.39,"currency_code":"USD","in_stock":true},{"title":"25 HP - 6 in Motor \/ 45S250-60DS - 1530-1543 ft at 45 GPM","offer_id":50562917433519,"sku":"98924071","price":17222.75,"currency_code":"USD","in_stock":true},{"title":"25 HP - 6 in Motor \/ 45S250-63DS - 1599-1613 ft at 45 GPM","offer_id":50562917466287,"sku":"98924072","price":17951.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/grundfos-sp-4-in-pump-end_5ea6ce0e-66ad-4135-be7d-5ed086337aed.jpg?v=1790906527","url":"https:\/\/watermainsupply.com\/products\/grundfos-45s-sp-4-in-submersible-pump-end","provider":"Watermainsupply","version":"1.0","type":"link"}