Description
The Viessmann Filling Loop with Backflow Preventer 7506620 is a genuine brand-new replacement component designed for selected Viessmann Vitodens 100-W combi boilers. Supplied under manufacturer part number 7506620, this filling loop comes complete with a built-in backflow preventer and includes a 12-month warranty. Before ordering, always confirm your boiler model and manufacturer part number to ensure compatibility.
The filling loop is used to top up the boiler’s central heating system pressure, while the integrated backflow preventer helps stop water from flowing back into the mains supply. A faulty filling loop or backflow preventer may cause pressure filling issues or water leakage. Installation should be completed by a suitably qualified Gas Safe registered engineer where applicable.
Product Details
Brand: Viessmann
Part Type: Filling Loop with Backflow Preventer
MPN: 7506620
Warranty: 12 Months
Condition: Genuine Brand New
Boiler Compatibility
The Viessmann Filling Loop with Backflow Preventer 7506620 is compatible with the following boilers.
Viessmann Vitodens 100-W
Fits Appliance GC No.
Vitodens 100-W B1KF26 Combi NG
Vitodens 100-W B1KF30 Combi NG
Vitodens 100-W B1KF30M Combi NG
Vitodens 100-W B1KF35 Combi NG
Before ordering, please check your boiler model, GC number, serial number and Viessmann manufacturer part number 7506620 to ensure this is the correct replacement part for your appliance.
Delivery & Collection
Collection is available from our Newcastle showroom at Unit 5, Penn Street, Newcastle upon Tyne, NE4 7BG, subject to stock availability. We also offer fast UK delivery via Royal Mail First Class or DPD Next Day, with most orders arriving within one to two working days. Boiler components should be installed by a suitably qualified Gas Safe registered engineer.
Warranty
This brand-new genuine Viessmann boiler filling loop with backflow preventer is supplied with a 12-month warranty. Warranty claims may be subject to inspection and confirmation that the component was correctly selected and professionally installed.
Returns
We accept returns within 30 days of delivery. The product must be unused, unfitted and returned in its original unopened packaging with all seals intact. We cannot accept returns for components that have been fitted, used, damaged or returned in an unsuitable condition. Please check the boiler model, GC number, edition, serial-number range and part number carefully before ordering.
If you need any help, our team is happy to assist. Please contact us by phone or WhatsApp chat.
Frequently Asked Questions
Is the Viessmann 7506620 filling loop compatible with my boiler?
This filling loop is compatible with the listed Viessmann Vitodens 100-W B1KF26, B1KF30, B1KF30M and B1KF35 Combi NG boilers. Always confirm your boiler model and manufacturer part number before ordering.
What does the Viessmann 7506620 filling loop with backflow preventer do?
It allows you to safely top up the central heating system pressure while preventing water from flowing back into the mains water supply.
What symptoms may indicate a faulty filling loop or backflow preventer?
Common symptoms include difficulty repressurising the boiler, water leaks around the filling loop, loss of system pressure or continuous filling issues.
How do I confirm that 7506620 is the correct replacement part?
Check your boiler model and confirm that Viessmann manufacturer part number 7506620 matches your existing filling loop or the official Viessmann parts information.
Does this product come with a warranty?
Yes. This genuine brand-new Viessmann filling loop with backflow preventer comes with a 12-month warranty.
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