Derry Bold - Polished Brass Thermostatic Radiator Valve & Lockshield Straight 10mm

Thermostatic control with a coordinated valve set

This modern Derry Bold TRV set pairs a thermostatic radiator valve with a matching lockshield, helping you manage the warmth of an individual room without relying only on the main heating controls. The straight body connects to 10mm pipework, while the liquid sensor responds automatically to changes in room temperature.

Why choose these radiator valves?

• Fine-tune warmth one radiator at a time: The valve automatically alters hot-water flow through the individual radiator in response to the room temperature and selected setting.
• Use less unnecessary heat in rooms that are already warm: Restricting flow when less heat is needed can help prevent an already-comfortable room from continuing to receive unnecessary radiator heat.
• Add protection during very cold weather: 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: The set includes the TRV and matching lockshield together, giving you both radiator valves in one coordinated purchase.
• Plan the radiator connection with the right valve shape: Straight valves suit side-entry radiator layouts where the pipework runs along the wall to meet the radiator.
• Choose a heating level that suits the space: The multi-temperature head lets you select different heating levels to suit how much warmth the room needs.
• Benefit from automatic response to changing room temperature: Room-temperature changes are detected by the liquid sensor, allowing the valve to regulate flow automatically.
• Complete the radiator with a coordinated visible fitting: The contemporary body shape is designed to complement modern radiators without adding unnecessary visual bulk. The polished & un-lacquered Polished Brass finish helps coordinate the valves with the radiator and nearby fittings.
• Buy with longer-term reassurance: With a 3 years guarantee, the set comes with added reassurance for the years after 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: 10mm
• Control Type: Multi Temperature Control