Grundfos TP 50-190/2 A-F-A-BQQE 1.5kW DN50 Inline Circulator Pump 415V 96086996 USED #5015

Grundfos TP 50-190/2 A-F-A-BQQE DN50 Flanged In-Line Pump 415V 1.5kW 96086996 #5015 USED

This listing is for a Grundfos TP 50-190/2 A-F-A-BQQE single-stage in-line centrifugal circulator pump, product number 96086996. It is a fixed-speed, dry-rotor commercial heating and cooling pump with DN50 PN16 DIN flanged connections, a 340 mm port-to-port length and a 1.5 kW three-phase 400V / 415V motor.

The Grundfos TP range is designed for commercial heating, cooling, HVAC and compatible industrial circulation duties. Its in-line construction allows installation directly into matching pipework, while the top-pull-out design enables removal of the motor, pump head and impeller for maintenance without removing the pump housing from the pipework.

Condition: supplied as a USED pump. The unit has previously been installed and may show cosmetic wear consistent with service use.

Important condition note: There is a crack to the motor cooling-fan cowl (fan cover). Please refer to the product photographs. The fan guard should be inspected and repaired or replaced where necessary before operation to ensure the cooling fan remains safely guarded and airflow is unobstructed.

Guarantee: supplied with a 6-month guarantee.

Technical Specifications

• Manufacturer: Grundfos
• Model: TP 50-190/2 A-F-A-BQQE
• Grundfos product number: 96086996
• Stock code: #5015
• EAN: 5700395309522
• Pump type: Single-stage dry-rotor in-line centrifugal pump
• Speed type: Fixed speed
• Connection size: DN50 inlet / DN50 outlet
• Connection type: DIN flanged, EN 1092-2
• Flange pressure rating: PN16
• Port-to-port length: 340 mm
• Maximum operating pressure: 16 bar
• Maximum head: 190 dm / 19 metres
• Rated flow: 22.2 m³/h / 6.17 L/s
• Rated head: 15.5 metres
• Maximum flow reference: Approximately 28 m³/h / 7.78 L/s at low differential head
• Actual impeller diameter: 120 mm
• Rated motor output P2: 1.5 kW
• Electrical supply: 3-phase, 50Hz, 3 × 220–240V Delta / 380–415V Star
• Nominal UK supply: 400V / 415V three-phase
• Rated speed: Approximately 2890–2910 rpm
• Motor: 2-pole, fan-cooled asynchronous motor
• Motor efficiency class: IE3
• Motor enclosure class: IP55 manufacturer's standard specification
• Motor insulation class: F
• Motor protection: Requires external overload protection
• Shaft seal: BQQE mechanical shaft seal
• Seal construction: Rubber bellows mechanical seal
• Seal faces: Silicon carbide / silicon carbide
• Secondary seal material: EPDM
• Liquid temperature range: -25°C to +120°C
• Pump housing material: Cast iron EN-GJL-250 / EN-JL1040
• Impeller material: Cast iron EN-GJL-200 / EN-JL1030
• Minimum Efficiency Index: MEI ≥ 0.70
• Condition: USED – crack to motor fan cowl
• Guarantee: 6 months

Electrical note: Published motor details vary slightly between production versions. The fitted motor nameplate should be used to confirm the exact rated current and overload setting.

Need help confirming suitability?
Call us on 01803 220416 for technical advice.

Manufacturer Product Page

The official Grundfos product page for this pump can be viewed here:
View Grundfos TP 50-190/2 – 96086996

Technical Documentation

Grundfos product-specific technical data, including performance curves, motor data, installation dimensions and electrical connection diagrams:
View Grundfos TP 50-190/2 Specification Sheet and Dimensional Drawing

Grundfos TP / TPD / TPE / TPED technical data booklet:
View Grundfos TP and TPD Technical Data Booklet

Typical Applications

• Commercial heating circulation systems
• Boiler primary and secondary circuits
• HVAC circulation systems
• District heating and cooling circuits
• Air-conditioning and chilled-water circulation
• Industrial cooling and temperature-control systems
• Compatible clean-water circulation duties
• Replacement of matching DN50 flanged Grundfos TP installations

Frequently Asked Questions

What is this pump used for?

The Grundfos TP 50-190/2 is a commercial dry-rotor in-line centrifugal pump designed for circulating water in heating, cooling, HVAC and compatible industrial systems.

It is particularly suitable for applications requiring a relatively high flow rate against a moderate pressure loss, with a rated duty point of 22.2 m³/h at 15.5 metres head.

What does TP 50-190/2 mean?

• TP: Grundfos single-stage dry-rotor in-line centrifugal pump range.
• 50: Nominal DN50 inlet and outlet connections.
• 190: Maximum head class of 190 decimetres, approximately 19 metres.
• /2: Two-pole motor, operating at approximately 2900 rpm on a 50Hz supply.

What does A-F-A-BQQE mean?

• A: Basic pump version.
• F: DIN flanged pipe connections.
• A: Basic material configuration.
• BQQE: Mechanical shaft seal code.

What is the BQQE shaft seal?

The BQQE seal is a rubber bellows mechanical shaft seal with silicon carbide / silicon carbide seal faces and EPDM secondary elastomers.

The silicon carbide seal faces provide excellent hardness and good wear resistance, while the EPDM elastomers are particularly suitable for many clean-water and hot-water duties.

The rubber bellows construction allows axial movement of the seal without relying on an O-ring sliding along the pump shaft. This helps prevent deposits on the shaft from restricting seal movement.

What temperature and pressure can this pump operate at?

Grundfos lists a liquid temperature range of -25°C to +120°C for this BQQE configuration, with a maximum operating pressure of 16 bar.

The maximum operating pressure applies to the complete pump system and should not be confused with the differential pressure generated by the pump.

Operation at high temperatures requires sufficient inlet pressure to prevent cavitation and ensure adequate lubrication of the shaft seal.

What liquids can this pump circulate?

This pump is suitable for thin, clean, non-aggressive and non-flammable liquids compatible with its cast-iron construction and BQQE mechanical shaft seal.

Typical suitable duties include:

• Clean heating system water
• Commercial cooling water
• Chilled-water circulation
• Air-conditioning circulation water
• District heating and cooling water
• Compatible treated and softened water
• Selected water-glycol mixtures
• Compatible clean industrial circulation liquids

The pump is not intended for sewage, wastewater, sludge, abrasive solids, fibres or liquids that chemically attack its components.

Can this pump be used with glycol?

Yes, subject to the mixture and operating conditions. Grundfos recommends BQQE or DQQE shaft seals for certain TP pump duties involving glycol or antifreeze mixtures. This pump is fitted with BQQE.

Glycol type, concentration, viscosity and inhibitor package affect pump performance and seal life. Higher viscosity can increase motor load and may require the pump duty to be reassessed.

The exact liquid mixture should therefore be checked against Grundfos liquid compatibility guidance before installation.

Is this suitable for mineral oils or fuels?

Not with the standard BQQE seal arrangement.

The fitted seal uses EPDM elastomers, which are generally suitable for many water-based duties but are not compatible with mineral oils and petroleum-based fuels.

Oil or fuel applications normally require a different seal and material selection. This pump should not be used for flammable or explosive liquids without specific approval for the complete application.

Is this suitable for potable water?

This is a cast-iron commercial circulator primarily intended for heating, cooling and industrial circulation duties.

Although the wider Grundfos TP range includes pumps used in water supply applications, this standard cast-iron version should not automatically be regarded as suitable for potable domestic hot-water systems.

For drinking-water or domestic hot-water circulation, the pump materials, water quality and relevant approvals must be checked.

What is the advantage of the top-pull-out design?

The Grundfos TP uses a top-pull-out construction, allowing the motor, pump head and impeller assembly to be removed for inspection or maintenance while the main pump housing remains installed in the pipework.

This can simplify servicing and reduce the need to disturb existing flanges and pipework.

Is this a variable-speed pump?

No. This is a fixed-speed TP pump with a standard three-phase asynchronous motor.

Grundfos documentation identifies the possibility of using a suitable external variable-frequency drive, such as a Grundfos CUE, where speed control is required.

Any inverter installation must be correctly matched to the fitted motor and commissioned with suitable electrical protection.

What electrical supply does this pump require?

The pump has a three-phase, 50Hz motor rated for:

• 220–240V Delta
• 380–415V Star

For a normal UK 400V / 415V three-phase supply, the motor is connected in the appropriate star configuration according to its nameplate and wiring diagram.

The motor requires suitable external overload protection because it does not incorporate built-in motor protection.

What is the minimum inlet pressure or NPSH requirement?

The required minimum inlet pressure depends on liquid temperature, operating flow and the available suction conditions.

Grundfos provides an NPSH curve in the product-specific technical documentation. This should be used when assessing installations with elevated water temperatures, restricted suction pipework or limited available inlet pressure.

Insufficient inlet pressure can cause cavitation, noise, reduced performance and premature damage to the impeller and shaft seal.

The pump must always be correctly filled and vented before operation.

Will this replace my existing DN50 TP pump?

This pump has DN50 PN16 DIN flanged connections, a 340 mm port-to-port length and a 1.5 kW three-phase motor.

It may replace an existing matching Grundfos TP pump or a comparable in-line circulator from manufacturers such as Wilo, Lowara or KSB, provided the hydraulic duty, flange standard, installation dimensions and electrical requirements are suitable.

The pump should be selected against the required flow and head rather than connection size alone.

What is the condition of the motor fan cowl?

There is a crack in the motor cooling-fan cowl. This is an existing defect and is disclosed as part of the used condition of the pump.

The fan cowl is the protective cover around the motor's external cooling fan. It helps prevent contact with the rotating fan while allowing cooling air to circulate around the motor.

A cracked fan cowl should be inspected before operation. If the cover is insecure, damaged sufficiently to expose the fan or obstructs cooling airflow, it should be repaired or replaced before commissioning.

Please refer to the product photographs for the condition of the supplied unit.

What should I check before ordering?

• Existing pump model and product number
• Required flow and head duty point
• DN50 PN16 flange compatibility
• 340 mm port-to-port installation length
• Three-phase 400V / 415V electrical supply
• Motor overload protection and controls
• Pumped-liquid compatibility and temperature
• Available inlet pressure / NPSH requirements
• Condition of the motor fan cowl

About Our Stock

Stock code: #5015

We specialise in supplying used, surplus and obsolete commercial pumps and pumping equipment.

This pump is supplied in USED condition and has a crack to the motor cooling-fan cowl, as described above.

Supplied with a 6-month guarantee. Please check the product number, electrical supply, flange dimensions, hydraulic performance and disclosed condition before purchasing.