{"product_id":"grundfos-upc-upscd-50-120-f-circulator-pump-head-240v-55533223-4875","title":"Grundfos UPC UPCD 50-120 F Circulator Pump Head 240V 55533223  #4875","description":"\u003cdiv style=\"max-width: 900px; margin: 0 auto; padding: 20px; line-height: 1.6;\"\u003e\n\n\u003ch2\u003eGrundfos UPC \/ UPCD 50-120 F Replacement Pump Head – 240V Circulator Head (55533223 \/ 96406328) #4875\u003c\/h2\u003e\n\n\u003cp\u003e\nThis listing is for a \u003cstrong\u003eGrundfos UPC \/ UPCD 50-120 F replacement pump head\u003c\/strong\u003e, marked with part number \u003cstrong\u003e55533223\u003c\/strong\u003e. The later replacement head reference for this UPC 50-120 240V single-phase head is commonly cited as \u003cstrong\u003e96406328\u003c\/strong\u003e. It is intended for compatible Grundfos UPC \/ UPCD 50-120 F circulator pump bodies where the motor head, hydraulic unit, voltage and body interface match the existing installation.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e supplied in \u003cstrong\u003eas new surplus condition\u003c\/strong\u003e – the unit has not been installed or used but may show minor cosmetic markings from storage and handling. \u003cstrong\u003eGuarantee:\u003c\/strong\u003e supplied with a \u003cstrong\u003e2-year guarantee\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e replacement circulator pump head \/ motor head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number on item:\u003c\/strong\u003e 55533223\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLater \/ replacement reference:\u003c\/strong\u003e 96406328\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel reference:\u003c\/strong\u003e UPC \/ UPCD 50-120 F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical supply:\u003c\/strong\u003e 230–240 V, 1-phase, 50 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump style:\u003c\/strong\u003e glandless wet-rotor circulator head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e replacement head for compatible UPC \/ UPCD 50-120 F pump assemblies\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e pump body, flanges and pipework connections are not included\u003c\/li\u003e\n\u003c\/ul\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 for technical advice before ordering.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eCompatibility guidance\u003c\/h3\u003e\n\n\u003cp\u003e\nThis is a \u003cstrong\u003ereplacement pump head only\u003c\/strong\u003e, not a complete circulator pump. It should be selected by matching the existing Grundfos model, head part number, voltage, hydraulic size and pump body interface.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCheck the existing pump is a compatible \u003cstrong\u003eUPC \/ UPCD 50-120 F\u003c\/strong\u003e assembly\u003c\/li\u003e\n  \u003cli\u003eConfirm the existing head or motor label is \u003cstrong\u003e230–240 V single-phase\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eConfirm the replacement head interface matches the installed pump body\u003c\/li\u003e\n  \u003cli\u003eCheck whether the existing unit is single-head UPC or twin-head UPCD\u003c\/li\u003e\n  \u003cli\u003eIf unsure, send us photos of the existing pump nameplate, head label and pump body\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eReference body details\u003c\/h3\u003e\n\n\u003cp\u003e\nFor reference, UPC 50-120 F pump bodies are commonly associated with \u003cstrong\u003eDN50 flanged pipework\u003c\/strong\u003e and a \u003cstrong\u003e280 mm port-to-port length\u003c\/strong\u003e. This listing is for the \u003cstrong\u003ehead only\u003c\/strong\u003e, so the existing pump body, flanges and pipework are retained.\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 existing UPC \/ UPCD 50-120 F installations\u003c\/li\u003e\n  \u003cli\u003eHeating circulation systems\u003c\/li\u003e\n  \u003cli\u003eCommercial building-services circulation\u003c\/li\u003e\n  \u003cli\u003ePlant-room pump repairs where the existing pump body remains installed\u003c\/li\u003e\n  \u003cli\u003eLike-for-like repair where pipework changes are not required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eIs this a complete pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nNo. This listing is for the \u003cstrong\u003ereplacement pump head \/ motor head only\u003c\/strong\u003e. It does not include the pump body, flanges or pipework connections.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the relationship between 55533223 and 96406328?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe head supplied is marked with part number \u003cstrong\u003e55533223\u003c\/strong\u003e. The reference \u003cstrong\u003e96406328\u003c\/strong\u003e is commonly listed as the later Grundfos replacement head number for \u003cstrong\u003eUPC 50-120 240V single-phase\u003c\/strong\u003e pump heads. When replacing an existing head, please compare the full head label, voltage and pump body interface before ordering.\n\u003c\/p\u003e\n\n\u003ch4\u003eWill this fit my existing UPC \/ UPCD 50-120 F pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nIt may fit if your existing pump body is a compatible \u003cstrong\u003eUPC \/ UPCD 50-120 F\u003c\/strong\u003e assembly and the head interface, voltage and hydraulic size match. UPC replacement heads are commonly used across compatible single-head UPC and twin-head UPCD pump bodies, but the physical interface and electrical specification must still be checked.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the difference between UPC and UPCD?\u003c\/h4\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e generally refers to the single-head circulator version, while \u003cstrong\u003eUPCD\u003c\/strong\u003e refers to the twin-head version. A compatible replacement head may be used on the matching side of a twin-head UPCD pump body, provided the head interface and electrical specification match.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhy replace the pump head instead of the full pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nReplacing the pump head can be a practical option where the existing pump body, flanges and pipework are still serviceable. It avoids disturbing the pipework, changing flange dimensions or converting the installation to a different pump platform.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhy use an original-style replacement head instead of a modern high-efficiency replacement?\u003c\/h4\u003e\n\n\u003cp\u003e\nAn original-style UPC \/ UPCD replacement head can suit sites where the existing system was designed around the older UPC \/ UPS wet-rotor circulator style. If the pump body, hydraulic duty, electrical supply and head interface are correct, replacing the head can be simpler and less disruptive than redesigning the installation around a new high-efficiency circulator.\n\u003c\/p\u003e\n\n\u003cp\u003e\nOlder Grundfos catalogue data for the related UPS 50-120 F 280 family gives low minimum inlet-pressure requirements, including \u003cstrong\u003e0.05 bar at 75 °C\u003c\/strong\u003e, \u003cstrong\u003e0.35 bar at 90 °C\u003c\/strong\u003e and \u003cstrong\u003e1.65 bar at 120 °C\u003c\/strong\u003e. This is not a substitute for checking the exact installed pump duty, but any modern replacement should be checked against its own minimum inlet pressure \/ NPSH requirement before substitution.\n\u003c\/p\u003e\n\n\u003cp\u003e\nSome customers also prefer repairing older Grundfos circulators because the original pump body and installation have already proved reliable on site. Where the existing body is sound, a replacement head can keep the system closer to its original specification.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes this pump head have a mechanical shaft seal?\u003c\/h4\u003e\n\n\u003cp\u003e\nNo. UPC \/ UPCD circulators are glandless wet-rotor style pumps, meaning the pump head does not use a conventional mechanical shaft seal like a dry-rotor pump.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this a modern high-efficiency circulator?\u003c\/h4\u003e\n\n\u003cp\u003e\nNo. This is an original-style replacement head for compatible UPC \/ UPCD circulator assemblies. If replacing the full pump with a modern high-efficiency circulator, the pipework dimensions, flange standard, electrical supply, control arrangement and hydraulic duty should all be checked carefully.\n\u003c\/p\u003e\n\n\u003ch4\u003eWho should install this pump head?\u003c\/h4\u003e\n\n\u003cp\u003e\nInstallation should be carried out by a competent heating engineer or electrician. The pump must be isolated electrically and hydraulically, and the replacement head must be fitted to a compatible pump body using the correct procedure and seals.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eAbout Our Stock\u003c\/h3\u003e\n\n\u003cp\u003e\nStock code: \u003cstrong\u003e#4875\u003c\/strong\u003e\u003cbr\u003e\nWe specialise in supplying \u003cstrong\u003enew and unused surplus pumps, pump heads and pump spares\u003c\/strong\u003e. All units are inspected prior to dispatch and supplied with a \u003cstrong\u003e2-year guarantee\u003c\/strong\u003e.\n\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.water-pump.biz\/pdf\/UPC-Inline-Circulator.pdf\" rel=\"nofollow noopener\" target=\"_blank\"\u003e\nView archived Grundfos UMC \/ UPC in-line circulator data\n\u003c\/a\u003e\n\u003c\/div\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":57400968544633,"sku":null,"price":795.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1218\/7894\/files\/78400fea-9e55-4aa0-81ae-931778bb7296.jpg?v=1780924802","url":"https:\/\/thepumpdealer.co.uk\/products\/grundfos-upc-upscd-50-120-f-circulator-pump-head-240v-55533223-4875","provider":"The Pump Dealer","version":"1.0","type":"link"}