Derry Bold - White Thermostatic Radiator Valve & Lockshield Straight 15mm

A complete TRV set for more flexible room heating

Designed to combine individual radiator control with a coordinated finish, this White Derry Bold thermostatic valve set includes both the TRV and matching lockshield. Its straight layout suits the relevant pipe route, and the liquid sensing mechanism adjusts the valve as surrounding temperature changes.

Why choose these radiator valves?

• Manage radiator warmth around how the room is used: Instead of leaving the radiator fully open, the TRV adjusts the flow of hot water as the surrounding room temperature changes.
• Avoid heating a room more than you need: By reducing hot-water flow when the room is warm enough, the valve can help limit unnecessary heating in that space.
• Give the heating system extra protection from freezing conditions: The frost setting provides a safeguard for very cold conditions by allowing the valve to open slightly when temperatures fall sufficiently low.
• Simplify the purchase with both valves supplied: Supplying a matching lockshield alongside the TRV means both visible valve positions can be completed as one coordinated set.
• Make the connection work with your installation layout: 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 control provides a choice of thermostatic settings rather than limiting the radiator to fully open or fully closed.
• Let the valve respond automatically to room temperature: The liquid sensing element changes with room temperature and drives the valve's automatic thermostatic response.
• Choose a finish that complements the installation: A cleaner modern form helps the valve set feel coordinated with contemporary radiator designs. The gloss White finish helps coordinate the valves with the radiator and nearby fittings.
• Add longer-term confidence to the purchase: 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: 15mm
• Control Type: Multi Temperature Control