{"product_id":"grundfos-umc-d-80-60-circulator-replacement-pump-head-415v-96406336-5008","title":"Grundfos UMC\/D 80-60 Circulator Replacement Pump Head 415V 96406336 #5008","description":"```html\n\u003cdiv style=\"max-width: 900px; margin: 0 auto; padding: 20px; line-height: 1.6;\"\u003e\n\n\u003ch2\u003eGrundfos UMC\/D 80-60 Circulator Replacement Pump Head 415V 96406336 #5008\u003c\/h2\u003e\n\n\u003cp\u003e\nThis listing is for a \u003cstrong\u003egenuine Grundfos UMC\/D 80-60 replacement circulator pump head\u003c\/strong\u003e, part number \u003cstrong\u003e96406336\u003c\/strong\u003e. Designed for compatible \u003cstrong\u003eUMC 80-60\u003c\/strong\u003e single-head and \u003cstrong\u003eUMCD 80-60\u003c\/strong\u003e twin-head commercial circulator pumps, it provides a practical way to repair an existing installation without replacing the complete pump.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eUMS compatibility:\u003c\/strong\u003e Grundfos' historical replacement-parts documentation also identifies UMC heads and terminal boxes as replacements for the corresponding \u003cstrong\u003eUMS range\u003c\/strong\u003e. This includes compatible UMS 80-60 installations, subject to the correct head\/body interface, voltage and terminal box arrangement.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e This listing is for the replacement pump head, not the complete pump. The existing pump body, flanges and pipework are retained. Please refer to the product photographs for the components supplied.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e As-new surplus condition. Unused, although minor cosmetic marks from storage and handling may be present. Supplied with a \u003cstrong\u003e2-year guarantee\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Grundfos\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e Replacement circulator pump head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e UMC\/D 80-60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrundfos part number:\u003c\/strong\u003e 96406336\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock code:\u003c\/strong\u003e #5008\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible pump models:\u003c\/strong\u003e UMC 80-60 \/ UMCD 80-60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional compatibility:\u003c\/strong\u003e Corresponding UMS 80-60 installations, subject to verification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical supply:\u003c\/strong\u003e 3 × 415V, 50Hz, three-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor type:\u003c\/strong\u003e 4-pole, three-speed circulator motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump construction:\u003c\/strong\u003e Glandless wet-rotor circulator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal pump size:\u003c\/strong\u003e DN80\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum head class:\u003c\/strong\u003e Approximately 6 metres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed 1:\u003c\/strong\u003e 610 rpm \/ 245W input \/ 0.46A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed 2:\u003c\/strong\u003e 1050 rpm \/ 575W input \/ 1.03A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed 3:\u003c\/strong\u003e 1380 rpm \/ 950W input \/ 2.14A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed selection:\u003c\/strong\u003e Three-speed operation using the appropriate original terminal box arrangement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical application:\u003c\/strong\u003e Commercial heating and HVAC water circulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Legacy Grundfos replacement part, now obsolete through normal manufacturer supply channels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eElectrical data:\u003c\/strong\u003e Figures are taken from the original Grundfos UMC\/UPC technical literature for the UMC 80-60 at 415V. Confirm the existing pump nameplate and electrical installation before replacement.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eNeed help confirming compatibility?\u003c\/strong\u003e\u003cbr\u003e\nCall us on \u003cstrong\u003e01803 220416\u003c\/strong\u003e or send photographs of your existing pump nameplate, motor head and terminal box.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical Documentation\u003c\/h3\u003e\n\n\u003cp\u003e\nOriginal Grundfos UMC\/UPC in-line circulator technical brochure, including performance curves, electrical specifications, dimensions and installation information:\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003ca href=\"https:\/\/www.water-pump.biz\/pdf\/UPC-Inline-Circulator.pdf\" target=\"_blank\" rel=\"nofollow noopener\"\u003e\nView Grundfos UMC\/UPC Technical Brochure\n\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eReplacement head for Grundfos UMC 80-60 circulators\u003c\/li\u003e\n\u003cli\u003eReplacement head for Grundfos UMCD 80-60 twin-head circulators\u003c\/li\u003e\n\u003cli\u003eReplacement of compatible Grundfos UMS 80-60 heads\u003c\/li\u003e\n\u003cli\u003eCommercial heating and boiler circulation systems\u003c\/li\u003e\n\u003cli\u003eHVAC and closed-loop heating-water circulation\u003c\/li\u003e\n\u003cli\u003eMaintaining older three-phase installations without unnecessary pipework or electrical alterations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eDoes this head fit both UMC and UMCD pumps?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes. Grundfos part number \u003cstrong\u003e96406336\u003c\/strong\u003e is identified for the UMC 80-60 single-head and UMCD 80-60 twin-head pump ranges. On a compatible twin-head installation, the individual motor\/head assembly can be replaced while retaining the existing shared pump body.\n\u003c\/p\u003e\n\n\u003ch4\u003eWill this replacement head fit a Grundfos UMS pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes, subject to matching the installation. Grundfos' historical replacement-parts documentation specifies the use of \u003cstrong\u003eUMC replacement heads and terminal boxes for UMS pumps\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis means compatible UMS 80-60 installations may be repaired using the corresponding UMC replacement components. The existing pump model, voltage, head mounting arrangement and terminal box must be checked before ordering. Not every UMS installation should be assumed interchangeable without inspection.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhy replace the head instead of fitting a modern high-efficiency circulator?\u003c\/h4\u003e\n\n\u003cp\u003e\nOne of the biggest advantages is retaining the existing \u003cstrong\u003e415V three-phase electrical supply\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nMany modern electronically controlled commercial circulators use \u003cstrong\u003e230V single-phase power\u003c\/strong\u003e. Replacing an older three-phase pump with one of these models can require alterations to the electrical supply, motor protection, controls and associated wiring.\n\u003c\/p\u003e\n\n\u003cp\u003e\nUsing the correct original-style replacement head can avoid these alterations, allowing the existing three-phase installation to be retained where the wiring and controls remain suitable.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThere are also potential mechanical advantages. Replacing the head allows the existing pump body, flanges and pipework to remain in position, avoiding unnecessary modifications to a functioning installation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nModern high-efficiency pumps can offer significant energy savings, but a complete replacement should be assessed for electrical compatibility, hydraulic performance, installation dimensions and control requirements.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat about NPSH and minimum inlet pressure?\u003c\/h4\u003e\n\n\u003cp\u003e\nWhen selecting a modern replacement circulator, the \u003cstrong\u003eminimum inlet pressure and Net Positive Suction Head (NPSH) requirements\u003c\/strong\u003e must be considered.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDifferent pump designs may have different inlet-pressure requirements. Insufficient inlet pressure, particularly when circulating hot water, can lead to cavitation, noise and premature component wear.\n\u003c\/p\u003e\n\n\u003cp\u003e\nRetaining the correct original-style replacement head keeps the installation closer to its existing hydraulic design and avoids introducing a different pump with potentially different inlet-pressure requirements.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, both original and modern circulators require adequate inlet pressure. System pressure, operating temperature and hydraulic conditions should always be checked.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat does UMC 80-60 mean?\u003c\/h4\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eUMC\u003c\/strong\u003e identifies the Grundfos four-pole, three-speed circulator range. The \u003cstrong\u003e80\u003c\/strong\u003e refers to the nominal DN80 pump connection size, while \u003cstrong\u003e60\u003c\/strong\u003e represents a nominal shut-off head of 60 kPa, approximately 6 metres.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eUMCD\u003c\/strong\u003e refers to the corresponding twin-head pump arrangement.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this a three-speed pump head?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes. The UMC 80-60 was designed with three selectable operating speeds, allowing the pump performance to be adjusted to suit the installation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe original Grundfos electrical data specifies approximately \u003cstrong\u003e610, 1050 and 1380 rpm\u003c\/strong\u003e, with maximum-speed electrical input of \u003cstrong\u003e950W per head\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nSpeed selection depends on the appropriate terminal box and electrical arrangement.\n\u003c\/p\u003e\n\n\u003ch4\u003eShould the terminal box be replaced?\u003c\/h4\u003e\n\n\u003cp\u003e\nGrundfos distributor guidance recommends replacing the terminal box when installing a replacement head. This is particularly important where the existing terminal box shows signs of age, overheating, water damage or electrical deterioration.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor older UMS installations, the historical Grundfos replacement guidance specifically refers to using both the corresponding UMC head and terminal box.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003ePlease check the listing photographs to confirm whether a terminal box is supplied.\u003c\/strong\u003e If you are unsure which components are required, contact us before ordering.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes this pump head have a mechanical shaft seal?\u003c\/h4\u003e\n\n\u003cp\u003e\nNo. The UMC is a \u003cstrong\u003eglandless wet-rotor circulator\u003c\/strong\u003e and does not use a conventional mechanical shaft seal like a dry-rotor centrifugal pump.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe pumped liquid provides lubrication and cooling for the rotor and bearing arrangement. The pump must therefore be correctly filled and vented before operation and must not be run dry.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat liquids can this pump circulate?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe UMC range is primarily intended for clean heating and HVAC circulation water in compatible systems.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt is not suitable for sewage, sludge, heavily contaminated water or liquids containing abrasive solids and fibres. Poor water quality can damage the rotor and bearings.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor glycol mixtures, chemical additives or unusual operating temperatures, compatibility must be checked against the complete pump specification and system conditions.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this replacement head obsolete?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes. The Grundfos UMC\/UPC replacement head range has been discontinued through normal manufacturer supply channels, making genuine replacement heads increasingly difficult to source.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor installations where the existing pump body and pipework remain serviceable, an original replacement head offers an alternative to changing the entire circulator.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat should I check before ordering?\u003c\/h4\u003e\n\n\u003cul\u003e\n\u003cli\u003eExisting pump model: UMC 80-60, UMCD 80-60 or compatible UMS 80-60\u003c\/li\u003e\n\u003cli\u003eReplacement part number: 96406336\u003c\/li\u003e\n\u003cli\u003eElectrical supply: 415V three-phase, 50Hz\u003c\/li\u003e\n\u003cli\u003eHead mounting arrangement and pump body compatibility\u003c\/li\u003e\n\u003cli\u003eTerminal box compatibility and components supplied\u003c\/li\u003e\n\u003cli\u003eCondition of the existing pump body and system water\u003c\/li\u003e\n\u003cli\u003eExisting control and electrical protection arrangements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eAbout Our Stock\u003c\/h3\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eStock code: #5008\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\nWe specialise in supplying \u003cstrong\u003enew and unused surplus commercial pumps, circulators and replacement pump heads\u003c\/strong\u003e, including genuine obsolete equipment that can be difficult to obtain through traditional distributors.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis item is supplied in \u003cstrong\u003eas-new surplus condition with a 2-year guarantee\u003c\/strong\u003e. Minor cosmetic marks from storage or handling may be present.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPlease confirm compatibility before purchasing. Our team can assist with identifying older Grundfos pumps and replacement heads.\n\u003c\/p\u003e\n\n\u003c\/div\u003e\n```\n","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":63786052747641,"sku":null,"price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1218\/7894\/files\/6ca21c0a-f72f-41e6-be26-e404ae371e12.jpg?v=1792401951","url":"https:\/\/thepumpdealer.co.uk\/products\/grundfos-umc-d-80-60-circulator-replacement-pump-head-415v-96406336-5008","provider":"The Pump Dealer","version":"1.0","type":"link"}