Baxi Boiler Pressure Relief Valve PRV Replacement Part

This baxi combi pressure relief valve 7683976 (PRV) helps protect your boiler by safely releasing excess system pressure. A failing PRV can cause the external copper discharge pipe to drip, repeated pressure loss, and frequent topping-up; replacing it with the correct PRV is a reliable fix that restores stable pressure control and reduces shutdown risk.

Compatibility :

• Combi: 624, 630, 636, 825, 830, 836
• System: 818, 824

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 (FAQ’s)

1. What does a pressure relief valve (PRV) do?
It protects the heating system by releasing water if pressure rises too high, preventing damage to components.

2. How do I know if the PRV is faulty?
Common signs: constant dripping from the discharge pipe outside, pressure dropping regularly, and needing to top up the system often.

3. If my PRV is leaking, is the valve always the main problem?
Not always an issue like a failed expansion vessel can cause pressure spikes that make the PRV lift and then seep. Replacing the PRV can stop the leak, but checking the expansion vessel is also important.

4. Is this suitable for combi and system boilers?
Yes – this listing is for the Baxi models shown in the compatibility list (Combi and System ranges above).

5. Can I fit this myself?
Because it’s a pressurised boiler component, fitting is best done by a qualified heating engineer to ensure safe operation and correct resealing/pressure testing.