Derry Bold - Black Thermostatic Radiator Valve & Lockshield Straight 8mm

More individual control for your radiator

The Derry Bold Black thermostatic radiator valve and matching lockshield give you room-by-room control over an individual radiator while keeping the installation visually coordinated. Its straight 8mm fitting and liquid sensor combine practical connection design with automatic thermostatic response as the room temperature changes.

Why choose these radiator valves?

• Fine-tune warmth one radiator at a time: Thermostatic control lets this radiator react to the temperature of its own room rather than relying only on the main heating controls.
• Reduce unnecessary radiator heating: By reducing hot-water flow when the room is warm enough, the valve can help limit unnecessary heating in that space.
• Reduce the risk of freezing in colder conditions: A frost-protection setting helps reduce freezing risk by allowing some hot-water flow when the room temperature drops to a very low level.
• Avoid sourcing a matching lockshield separately: A matching lockshield is supplied with the thermostatic valve, so the corresponding valve does not need to be bought separately.
• Match the fitting to the direction of your pipework: Where pipework travels horizontally along the wall into a side radiator connection, the straight body keeps the route direct.
• Tailor radiator output to the room's needs: Multi-temperature adjustment lets the radiator be set to a more appropriate comfort level for the room.
• Get automatic temperature-responsive control: Room-temperature changes are detected by the liquid sensor, allowing the valve to regulate flow automatically.
• Give the radiator a more considered finishing detail: The contemporary body shape is designed to complement modern radiators without adding unnecessary visual bulk. Its matt Black surface lets the valves become part of the radiator's overall finish rather than an afterthought.
• Choose with added confidence beyond installation: A 3 years guarantee gives you longer-term reassurance beyond the initial installation.

What's included

• Thermostatic radiator valve head with body
• Matching lockshield valve
• Decorator's cap

Key technical details

• Connection Size Type: 1/2 BSP
• Fitting Type: Straight
• Connection: 8mm
• Control Type: Multi Temperature Control