Grundfos TPD 40-190/2 BUBE Pump Replacement Head 240V 4050355 #1894

GRUNDFOS TPD 40-190/2 BUBE – 240V Pump Replacement Head (4050355) #1894

This listing is for a Grundfos TPD pump head assembly, comprising the motor and wet end (impeller and cartridge), suitable as a replacement component for compatible TP/TPD series circulators. It is not a complete pump and does not include the pump housing, volute or pipework connections.

This head can be used on both single-head and twin-head pump configurations where the mechanical interface is compatible.

Condition: supplied as surplus / unused stock. The unit may show cosmetic marks consistent with storage and handling. It is inspected prior to dispatch and confirmed operational.
Guarantee: supplied with our 2-year guarantee.

• Assembly type: Pump head (motor + wet end)
• Electrical supply: 1 × 220–240 V, 50 Hz
• Shaft seal: BUBE mechanical seal

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

Frequently Asked Questions

Will this pump head fit my pump?

This is a pump head only (motor, impeller and wet end) and does not include a housing. Compatibility depends on the mechanical interface with your existing pump body.

This head may be suitable for:

• Grundfos TP single-head pumps of matching frame size
• Grundfos TP twin-head pumps (as replacement for one or both heads)

To confirm suitability, check the exact model code on your existing pump head or contact us with photos of the nameplate and installation details.

What does the BUBE shaft seal code mean?

• B – rubber bellows seal construction
• U – tungsten carbide seal face
• B – carbon, plastic-impregnated counterface
• E – EPDM elastomers

Seal operating temperature (BUBE): suitable from 0 °C up to 120 °C in water duties (EPDM-limited). The tungsten-carbide vs carbon pairing provides good wear resistance, quiet running and tolerance to brief dry running, making it a proven choice for HVAC circulation.

What does the product code mean?

• TPD – twin-head TP pump family
• 40 – nominal size of original pump housing
• 190 – head series designation
• /2 – 2-pole motor
• BUBE – mechanical shaft seal materials

About Our Stock

Stock code: #1894
We specialise in supplying quality pumps and equipment. This pump head is supplied as surplus stock, inspected prior to dispatch and supplied with a 2-year guarantee.