Baxi Boiler Flow Turbine / Flow Regulator 12 L/min 7211822

This Baxi flow regulator/flow turbine 7211822 (12 L/min) helps the boiler detect domestic hot water demand, so it fires smoothly when a tap opens. However, limescale or debris can restrict movement over time, and as a result you may get no hot water, temperature swings, hot water cutting out, or the boiler not responding. Therefore, replacing the correct part restores accurate flow sensing and also helps prevent nuisance shutdowns.

Important fitting advice

We recommend that all parts are fitted by a fully qualified Gas Safe registered engineer. If you need help confirming the right part, contact us our team has 10+ years of boiler spares knowledge and friendly chat support to help you quickly.

Delivery

At Boiler Spares Hub, we dispatch orders within 1 working day (Monday-Friday). Orders placed outside working days will be dispatched on the next working day. For delivery options available for this product, please add it to your basket or check our delivery options page.

Returns

We accept 30-day returns. Returns must be in an unopened, sealed box. If we find the item has been used or installation was attempted, we may refuse the return.

Frequently Asked Questions (FAQs)

1. What does a Baxi flow turbine / flow regulator do?
It detects and stabilises DHW flow; therefore, the boiler fires and modulates correctly when a tap opens.

2. Symptoms of a faulty flow turbine?
No hot water, hot water cutting out, temperature swings, or boiler not responding to demand.

3. Can limescale cause flow turbine problems?
Yes – scale/debris can restrict the turbine/regulator and cause incorrect flow readings.

4. Where is the flow turbine located?
Commonly in the cold-water inlet/DHW flow path inside the boiler (varies by model).

5. Do I need a Gas Safe engineer?
For boiler internal components and safe isolation, it’s strongly recommended.