Baxi Isolation Flow Tap Valve Replacement Part

Baxi 105 HE Isolation Flow Tap Valve replacement part designed to fix common boiler valve problems like leaking joints, dripping from the spindle, or a stiff/stuck tap that won’t fully isolate the flow. A worn isolation valve can lead to slow pressure loss, damp marks under the boiler, or difficulty carrying out servicing because the water can’t be shut off properly. Replacing the faulty valve helps restore a tight seal and makes maintenance safer and easier

Compatibility :

• Baxi 80 / 105 Series: 105 HE A Instant, Combi 105E, Combi 105HE, Combi 80 Eco, Combi 80 Maxflue, Combi 80E, Combi Instant 105 E, Combi Instant 105E HE, Combi Instant
• 80E, Combi Instant 80E HE
• Baxi Duo-Tec HE: Duo-Tec 24 HE, Duo-Tec 28 HE, Duo-Tec 33 HE, Duo-Tec 40 HE
• Baxi Duo-Tec Combi ErP: Duo-Tec 24 Combi ErP, Duo-Tec 28 Combi ErP, Duo-Tec 33 Combi ErP, Duo-Tec 40 Combi ErP
• Baxi HE System: 15 HE System, 18 HE System, 24 HE System, 28 HE System, 32 HE System
• Baxi Megaflo System HE A: Megaflo 15 HE A, Megaflo 18 HE A, Megaflo 24 HE A, Megaflo 28 HE A, Megaflo 32 HE A
• Baxi System ErP: 15 System ErP, 18 System ErP, 24 System ErP, 28 System ErP, 32 System ErP
• Baxi Combi HE: Combi 24 HE, Combi 28 HE, Combi 33 HE
• Baxi Platinum Combi HE: Platinum Combi 24 HE, Platinum Combi 28 HE, Platinum Combi 33 HE, Platinum Combi 40 HE
• Baxi Combi ErP: 24 Combi ErP, 28 Combi ErP, 33 Combi ErP, 40 Combi ErP
• Baxi System: System 35/60, System 60/100

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 is a tap isolation valve?
A tap isolation valve lets you shut off water to a tap or appliance without turning off the whole system.

2. What do isolation valves do?
Isolation valves control water flow and allow repairs or replacements without draining the entire plumbing system.

3. Which is the pressure tap on a Baxi boiler?
The pressure tap on a Baxi boiler is usually located on the flow or return line and is used for checking system pressure during servicing.

4. What is the most common Baxi boiler error?
Common Baxi faults often involve ignition failure, low water pressure, sensor issues or fan problems. Error codes vary by model.

5. Where is this valve located in the boiler?
Typically on the pipework connections underneath the boiler (often on the flow/return connections), depending on the model.