Baxi Diaphragm - Press/Diff Valve Dhw 248066

A sudden loss of hot water from your taps, especially when the central heating still works, points to a common boiler fault. This frustrating problem often has a surprisingly simple and affordable solution. This genuine Baxi Diaphragm Press Diff Valve DHW 248066 is the essential component required to get your hot water flowing properly again, restoring your system to full working order.

A Fast, Reliable Fix for Your Hot Water

Inside your combi boiler, the diverter valve acts as a critical traffic controller, and the Baxi Diaphragm Press Diff Valve DHW 248066 is the brain behind the operation. When you turn on a hot tap, the change in water pressure flexes this diaphragm for differential valve. This movement pushes a pin to switch the valve's position, instantly redirecting hot water from your radiators to your taps. It's a clever piece of engineering that we often take for granted until it starts to fail. The most common symptom is a complete loss of domestic hot water, but a failing diaphragm can also cause fluctuating water temperatures, giving you a shower that annoyingly cycles between hot and cold.

Over thousands of cycles, the rubber can perish, harden, or develop a minuscule split. When this happens, it can no longer create the seal needed to operate the valve correctly. Choosing a genuine manufacturer part like this Baxi 248066 is essential for a lasting repair. Here at Heating and Plumbing World, we always recommend authentic parts. Baxi engineers these components with specific materials designed to withstand constant pressure changes and high temperatures. A pattern part might look the same, but it often lacks the precise thickness and material quality, leading to a premature failure and putting you right back where you started.

This cost-effective fix prevents the need for more expensive call-outs and protects the longevity of your boiler. For a competent person, this is a manageable DIY job, but always remember that safety is paramount when working with gas appliances. Ensure the boiler is powered down and you are confident in the task.

A healthy boiler is the heart of an efficient home, and using genuine spares ensures it runs at peak performance, which can even help keep your energy bills in check. Carrying out this repair is a great opportunity to ensure other parts of your system, like your central heating pumps and heating controls, are in good working order. Our extensive range of plumbing supplies has you covered for any larger projects. Should you need any advice on compatibility or fitting, our expert team is ready to help; you can find our details on the contact page.

Product Specifications

• Product Type: Diaphragm / Pressure Differential Valve
• Manufacturer: Baxi
• Manufacturer's Part Number: 248066
• Heating and Plumbing World SKU: 35605
• Compatibility: Suitable for a wide range of Baxi models, including the Baxi Combi 80E, 105E, 105HE, and more.