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B&Q£53.00Visit shop B&Q - Thermostatic Radiator Valve Set Trv Angled With Lockshield 8mmTraditional Style Pewter Derry Bold
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The Derry Traditional Thermostatic Radiator Valve and Lockshield set is designed for homeowners looking to combine authentic period aesthetics with modern climate control efficiency. This angled valve set is an excellent choice for traditional radiator setups, providing reliable temperature regulation in a durable Brown finish. Note that this specific model is engineered for 8mm pipework, so users should verify their existing system dimensions before purchase to ensure a proper fit.
| Colour | Brown |
|---|---|
| Model Part Number | 1431366 |
| Brand | UK Radiators |
No, this specific model is designed for 8mm pipework. Attempting to force it onto 15mm pipes will result in an improper fit and leaks.
The lockshield valve is used to balance the heating system by restricting the flow of water on the return side of the radiator.
The set includes the thermostatic valve and the lockshield valve. You may require additional plumbing accessories like PTFE tape or reducers depending on your specific system.
The finish is high-quality and designed for durability, though it should be kept away from harsh chemicals and abrasive cleaning tools.
No, these are strictly for use with wet central heating systems using hot water.
The thermostatic head contains a sensor that reacts to room temperature. It is normal for the head to feel warm as it regulates the flow.
Check if the thermostatic head is set too low or if the pin has become stuck. Gently tap the valve body or press the pin to ensure it moves freely.
Ensure that PTFE tape or appropriate jointing compound has been correctly applied to the threads during installation and that connections are tightened securely.
This is often caused by the flow direction being reversed. Ensure the TRV is installed on the flow pipe rather than the return pipe.
For a successful setup, ensure your heating system is fully drained before attempting to replace old valves. This set is strictly compatible with 8mm pipework; please ensure your current system matches this dimension, as standard plumbing often uses 15mm. The connection to the radiator is a standard 1/2 inch BSP thread. For maintenance, keep the exterior clean by wiping it with a dry, soft cloth. Avoid using harsh chemical cleaners or abrasive scouring pads, as these can strip the finish and damage the appearance of the valves. If the thermostatic head becomes stiff over time, ensure it is set to the maximum position during the summer months to prevent the internal pin from sticking.
