Identifying Your Myson TRV 2 Way Replacement Head
If your Myson thermostatic radiator valve (TRV) head has stopped working or you're looking to upgrade, finding a compatible Myson TRV 2 way replacement head is key. These heads are designed to regulate the temperature in individual rooms by controlling the flow of hot water into the radiator. A '2-way' system typically refers to a two-pipe heating setup, meaning your TRV head needs to be compatible with the valve body designed for this configuration.
- Check the valve body for brand and model markings.
- Measure the valve stem and connection size.
- Note the valve's orientation (angled, straight, corner).
- Consider if a manual or thermostatic head is needed.
The first step is to confirm the original Myson valve body is still intact. Often, the valve head itself can be unscrewed and replaced, saving the cost of a whole new valve. Look for any model numbers or identifying marks directly on the valve body or the existing head. Myson produced various TRV models over the years, and while many heads might share a common connection, specific designs can differ. Understanding the type of valve connection – often a standard 'M30 x 1.5' thread for many modern TRVs, but older or specific Myson models might vary – is crucial.
Ensure the valve body is in good working order before ordering a new head. A faulty valve body can render even a new head ineffective.
Sometimes, a '2 way' designation might also relate to how the valve operates rather than just the pipework it's connected to, but for replacement heads, the primary concern is physical compatibility with the valve body and ensuring it's suited for your heating system's pipe configuration.
Where to Source Your Replacement Myson TRV Head
Finding a specific Myson TRV 2 way replacement head often means checking specialist heating spares retailers online. While Myson may not directly sell replacement parts to consumers, plumbing merchants and online suppliers stock a wide array of TRV heads from various manufacturers, including those compatible with Myson valve bodies. It's essential to look for products that explicitly state compatibility with Myson TRVs or mention the specific thread size and fitting type you require.
Take a photograph of your existing valve head and the valve body before you start searching online; this visual reference is invaluable when comparing options.
When browsing, you'll find different types of TRV heads. Some are simple manual controls, while others are thermostatic, offering variable temperature settings. For a '2 way' system replacement, you'll almost certainly be looking for a thermostatic head. Pay close attention to the connection method – is it a push-fit, a screw-on type, or does it require a specific adapter? Many modern TRV heads utilise a standard push-fit mechanism where the head simply clips onto the valve body after the old one is removed.
Considering Valve Body Type
The shape of your radiator valve is also important. Radiator valves come in several configurations: straight, angled, and corner (or corner-angled). While the head itself is usually universal in fitting the valve body, the overall appearance and function of your radiator might be affected if you were replacing the entire valve. For a replacement head, the key is that it physically fits the Myson valve body securely. If you're unsure about the specific Myson model, searching for 'Myson TRV replacement head' along with the dimensions or any model numbers you can find on your existing valve is your best approach.
A correctly fitted TRV head offers significant control over room temperatures and can contribute to energy savings.
Making the Switch: What to Expect
Replacing a Myson TRV 2 way replacement head is often a straightforward process that doesn't require draining your heating system, making it an affordable DIY task. Before you begin, turn off the lockshield valve on the radiator to prevent water flow. Then, locate the retaining nut or clip that secures the existing TRV head to the valve body. For most screw-on heads, you'll simply need to unscrew the old head, often by hand or with the aid of pliers if it's stiff.
Once the old head is removed, you might need to clean any debris from the valve stem before attaching the new Myson TRV 2 way replacement head. Align the new head with the valve stem and push it into place, or screw it on according to its specific fitting mechanism. If it's a clip-on type, ensure it clicks securely. After fitting, gently turn the lockshield valve back on. Bleed any air from the radiator if necessary.
Checking Compatibility and Function
Always double-check the connection size and type against the manufacturer's specifications of the replacement head before purchase. A common connection for many TRV heads is the M30 x 1.5 thread, but it's vital to verify this fits your specific Myson valve body.
After installation, test the new head by turning it to different temperature settings. You should feel the valve opening and closing, and the radiator should begin to heat up or cool down accordingly. If you encounter issues, re-check the fitting and ensure no debris is obstructing the valve stem. If the problem persists, the valve body itself might be the issue, and you may need to consider replacing the entire radiator valve, which would involve draining the system.