{"product_id":"grundfos-tpd-65-120-2-a-f-a-bqqe-gw1-flanged-pump-heating-circulator-230v-dn65-98958002-4916","title":"Grundfos TPD 65-120\/2 A-F-A-BQQE-GW1 Flanged Pump Heating Circulator 230v Dn65 98958002 #4916","description":"\u003cdiv style=\"max-width: 900px; margin: 0 auto; padding: 20px; line-height: 1.6;\"\u003e\n\n\u003ch2\u003eGrundfos TPD 65-120\/2 A-F-A-BQQE-GW1 – 230V Twin-Head Flanged Heating Circulator Pump DN65 (98958002) #4916\u003c\/h2\u003e\n\n\u003cp\u003e\nThis listing is for a \u003cstrong\u003eGrundfos TPD 65-120\/2 A-F-A-BQQE-GW1\u003c\/strong\u003e twin-head in-line circulator pump with \u003cstrong\u003eDN65 flanged connections\u003c\/strong\u003e and a \u003cstrong\u003e340 mm port-to-port length\u003c\/strong\u003e. The TPD range is the twin-head version of the Grundfos TP dry-rotor in-line circulator range, designed for clean heating, cooling and building-services circulation duties.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis is a \u003cstrong\u003ecomplete twin-head flanged pump\u003c\/strong\u003e, not just a replacement pump head. Each pump head has its own motor and hydraulic assembly mounted on a common twin-head pump body, allowing duty\/standby or alternating operation depending on the external control arrangement used on site.\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\u003ePump type:\u003c\/strong\u003e TPD twin-head dry-rotor in-line circulator\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrundfos product number:\u003c\/strong\u003e 98958002\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e TPD 65-120\/2 A-F-A-BQQE-GW1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e DN65 flanged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePort-to-port length:\u003c\/strong\u003e 340 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure rating:\u003c\/strong\u003e PN6\/10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical supply:\u003c\/strong\u003e 1 × 230 V \/ 240 V class, 50 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor power:\u003c\/strong\u003e 2 × 1.1 kW\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePole number:\u003c\/strong\u003e 2-pole\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated speed:\u003c\/strong\u003e approx. 2880–2900 rpm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum head class:\u003c\/strong\u003e 12 m\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum flow:\u003c\/strong\u003e approx. 39 m³\/h \/ 10.8 L\/s\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiquid temperature range with fitted BQQE seal:\u003c\/strong\u003e -25 °C to +120 °C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump range temperature note:\u003c\/strong\u003e Grundfos gives higher-temperature guidance for the wider TP\/TPD range, but this supplied BQQE version should be treated as limited to +120 °C unless the shaft seal is changed and confirmed for the duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump housing:\u003c\/strong\u003e cast iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImpeller:\u003c\/strong\u003e stainless steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft seal:\u003c\/strong\u003e BQQE mechanical shaft seal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e single-stage, close-coupled, in-line centrifugal twin-head pump\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStock code:\u003c\/strong\u003e #4916\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eNeed help confirming suitability?\u003c\/strong\u003e\u003cbr\u003e\nCall us on \u003cstrong\u003e01803 220416\u003c\/strong\u003e for technical advice.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eManufacturer product page\u003c\/h3\u003e\n\n\u003cp\u003e\nFull technical specifications, curves and documentation can be viewed on the official Grundfos product page:\u003cbr\u003e\n\u003ca href=\"https:\/\/product-selection.grundfos.com\/uk\/products\/tp-tpe\/tpd\/tpd-65-1202-98958002?frequency=50\u0026amp;pumpsystemid=2979288748\u0026amp;tab=variant-specifications\" rel=\"nofollow noopener\" target=\"_blank\"\u003e\nView Grundfos TPD 65-120\/2 A-F-A-BQQE-GW1 (98958002) – Variant specifications\n\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical documentation\u003c\/h3\u003e\n\n\u003cp\u003e\nGrundfos TP, TPE and TPD technical data can be viewed here:\u003cbr\u003e\n\u003ca href=\"https:\/\/api.grundfos.com\/literature\/Grundfosliterature-1580.pdf\" rel=\"nofollow noopener\" target=\"_blank\"\u003e\nView Grundfos TP \/ TPE \/ TPD technical data PDF\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\u003eCommercial heating circulation systems\u003c\/li\u003e\n  \u003cli\u003eBoiler circuits and primary heating circuits\u003c\/li\u003e\n  \u003cli\u003eAir-conditioning and cooling systems\u003c\/li\u003e\n  \u003cli\u003eDistrict heating and district cooling systems\u003c\/li\u003e\n  \u003cli\u003eClean industrial circulation duties\u003c\/li\u003e\n  \u003cli\u003eBuilding-services circulation systems\u003c\/li\u003e\n  \u003cli\u003eReplacement of matching DN65 flanged twin-head circulators\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eWhat does the model number mean?\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTPD\u003c\/strong\u003e – Grundfos twin-head dry-rotor in-line circulator pump\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e65\u003c\/strong\u003e – nominal inlet and outlet diameter, DN65\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120\u003c\/strong\u003e – maximum head class, 120 dm \/ approximately 12 m\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e\/2\u003c\/strong\u003e – 2-pole motor speed class\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e – basic pump version\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eF\u003c\/strong\u003e – DIN flange connection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e – standard cast iron material version\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBQQE\u003c\/strong\u003e – mechanical shaft seal code\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGW1\u003c\/strong\u003e – motor \/ market \/ speed variant suffix\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat connection does this pump have?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis pump has \u003cstrong\u003eDN65 flanged connections\u003c\/strong\u003e with a \u003cstrong\u003e340 mm port-to-port length\u003c\/strong\u003e. Please check the flange size, pressure rating, pipework gap and bolt pattern against your existing pump before ordering.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this a complete pump or just a pump head?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis listing is for the \u003cstrong\u003ecomplete twin-head flanged pump\u003c\/strong\u003e, including the pump body and both pump heads. It is not just a replacement motor head.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is a TPD twin-head pump used for?\u003c\/h4\u003e\n\n\u003cp\u003e\nA TPD pump has two pump heads mounted on a common in-line pump body. This type of pump is commonly used where the system requires duty\/standby operation, alternating operation or additional service resilience. The exact operating arrangement depends on the control panel or external control system used on site.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this a fixed-speed or variable-speed pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis is a mains-operated TPD pump, not a TPE or TPED electronically speed-controlled model. It does not have an integrated variable-speed drive. If speed control is required, the complete system design and motor suitability should be checked before using any external control equipment.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat does the BQQE shaft seal mean?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe BQQE seal code means:\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB\u003c\/strong\u003e – rubber bellows seal construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ\u003c\/strong\u003e – silicon carbide rotating seal face\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ\u003c\/strong\u003e – silicon carbide stationary seal face\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eE\u003c\/strong\u003e – EPDM rubber secondary seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nBQQE is commonly used for clean heating and cooling water duties where the pumped liquid is compatible with EPDM. Silicon carbide \/ silicon carbide seal faces provide good wear resistance for demanding clean-water circulation applications.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat temperature range does this pump cover?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis pump is supplied with a \u003cstrong\u003eBQQE mechanical shaft seal\u003c\/strong\u003e. For the supplied configuration, it should be treated as suitable for liquid temperatures from \u003cstrong\u003e-25 °C to +120 °C\u003c\/strong\u003e, provided the liquid is compatible with the pump materials and EPDM seal components.\n\u003c\/p\u003e\n\n\u003cp\u003e\nGrundfos gives higher-temperature guidance for the wider TP\/TPD pump range, including inlet-pressure values above 120 °C, but those higher-temperature duties require the correct shaft seal selection. Shaft seals are serviceable\/interchangeable parts, so another Grundfos seal may be fitted for a different duty, but it must be correctly matched to the exact pump model, liquid, temperature, pressure and operating conditions.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat liquids can this pump be used with?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe TP \/ TPD range is designed for clean, non-aggressive and non-flammable circulation liquids compatible with the pump materials and shaft seal. With the fitted BQQE seal, typical uses include clean heating water, chilled water, district heating water and suitable water\/glycol mixtures within the seal and system limits.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eLiquids containing solids or fibres\u003c\/li\u003e\n  \u003cli\u003eDirty water, wastewater or drainage duties\u003c\/li\u003e\n  \u003cli\u003eFlammable or explosive liquids\u003c\/li\u003e\n  \u003cli\u003eMineral oils or aggressive chemicals unless compatibility has been confirmed\u003c\/li\u003e\n  \u003cli\u003eSeawater or aggressive saline solutions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eCan this be used with glycol?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes, subject to the glycol type, concentration, temperature and duty point being checked. The Grundfos literature states that if glycol or another antifreeze agent is added to the pumped liquid, the pump must have a \u003cstrong\u003eBQQE\u003c\/strong\u003e or \u003cstrong\u003eDQQE\u003c\/strong\u003e shaft seal. This pump is supplied with a \u003cstrong\u003eBQQE\u003c\/strong\u003e seal, which is one of the listed seal types for water\/glycol mixtures.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe literature also states that liquids with higher density or kinematic viscosity than water can cause a considerable pressure drop, reduced hydraulic performance and increased power consumption. For glycol duties, the concentration, liquid temperature and system duty should therefore be checked before ordering. If the temperature or mixture falls outside the BQQE operating range, a different shaft seal, such as DQQE, may be required.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this suitable to replace other DN65 twin-head circulators?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis pump may be suitable as a replacement for matching DN65 in-line twin-head circulators from Grundfos, Wilo, Lowara or KSB where the flange size, port-to-port length, voltage, pressure rating and hydraulic duty are compatible.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPlease compare the existing pump nameplate, flange details, pipework gap, electrical supply and duty point before ordering. If you are unsure, send us photos of the existing pump nameplate and installation and we can help check suitability.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat minimum inlet pressure is required?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe required minimum inlet pressure depends on liquid temperature. For \u003cstrong\u003eTPD 65-120\/2\u003c\/strong\u003e, Grundfos gives the following relative minimum inlet pressures:\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20 °C:\u003c\/strong\u003e 0.5 bar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e60 °C:\u003c\/strong\u003e 0.7 bar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e90 °C:\u003c\/strong\u003e 1.2 bar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e110 °C:\u003c\/strong\u003e 2.0 bar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120 °C:\u003c\/strong\u003e 2.5 bar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e140 °C:\u003c\/strong\u003e 4.2 bar\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nHowever, this pump is supplied with a \u003cstrong\u003eBQQE shaft seal\u003c\/strong\u003e, so the practical listed liquid temperature range should be treated as up to \u003cstrong\u003e120 °C\u003c\/strong\u003e unless the shaft seal is changed and confirmed for a higher-temperature duty. The inlet pressure, operating temperature and total system pressure should always be checked against the installed duty and manufacturer documentation before commissioning.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes this pump have a mechanical shaft seal?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes. Unlike a wet-rotor MAGNA or UPS circulator, the TP \/ TPD range is a dry-rotor in-line centrifugal pump with a mechanical shaft seal. This model is supplied with a \u003cstrong\u003eBQQE mechanical shaft seal\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the advantage of the top-pull-out design?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe top-pull-out design allows the motor, pump head and impeller assembly to be removed for service while the pump housing remains installed in the pipework. This can make maintenance easier on larger commercial installations, provided there is adequate access around the pump.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this a new pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis listing is for \u003cstrong\u003eas new surplus stock\u003c\/strong\u003e. The unit has not been installed or used but may show cosmetic marks from storage and handling.\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#4916\u003c\/strong\u003e\u003cbr\u003e\nWe specialise in supplying \u003cstrong\u003enew and unused surplus pumps\u003c\/strong\u003e. This unit is inspected prior to dispatch and supplied with a \u003cstrong\u003e2-year guarantee\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":57405978116473,"sku":null,"price":2495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1218\/7894\/files\/07d0be75-e9ae-4064-ba44-89fcbed58011.jpg?v=1781006013","url":"https:\/\/thepumpdealer.co.uk\/products\/grundfos-tpd-65-120-2-a-f-a-bqqe-gw1-flanged-pump-heating-circulator-230v-dn65-98958002-4916","provider":"The Pump Dealer","version":"1.0","type":"link"}