Derry Bold - Thermostatic Radiator Valve & Lockshield - White

The Derry Bold Thermostatic Radiator Valve and Lockshield set is designed for vertical pipework in...

Best current price£24.80from Amazon

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AmazonUk Radiators Glossy White Thermostatic Radiator Valve Set 1/2" X 15Mm - Solid Brass Trv
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B&QB&Q - Thermostatic Radiator Valve Set Trv Straight With Lockshield 15mmModern Style White Stirling Bold
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£31.00
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The RangeUk Radiators Derry Bold - Chrome Thermostatic Radiator Valve & Lockshield Straight - White / 79Mm / 118Mm / Trv Valve, Lockshield And Fitting Instructions Included
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Product Information

Full details

The Derry Bold Thermostatic Radiator Valve (TRV) and Lockshield set is an essential upgrade for homeowners looking to improve the efficiency and aesthetic of their heating system. Ideal for those with vertical pipework installations, this white-finished kit provides precise temperature control and a clean, modern look. While it offers excellent versatility, users should verify their existing pipework diameter and orientation to ensure a seamless fit before installation.

All features

ColourWhite
Model Part Number1431281
BrandUK Radiators

Extended Product Information

FAQs

Can I use this on 10mm pipes?

This specific set is engineered for 15mm pipework and will not fit 10mm pipes without appropriate reducing adapters.

Is this suitable for all radiators?

Yes, as long as your radiator has a standard 1/2 inch BSP connection point.

Does it come with both valves needed for one radiator?

Yes, the kit includes both the thermostatic valve and the lockshield valve required to control a single radiator.

Is this an angled or straight valve?

This is a straight valve set, designed for pipes coming directly out of the floor.

How often should I replace the valve?

TRVs do not have a specific expiration date but should be replaced if they no longer respond to temperature changes or if they begin to leak.

Troubleshooting

Radiator fails to heat up

Check if the thermostatic pin is stuck. Remove the head and gently press the pin to ensure it moves freely; if it remains stuck, use a penetrating oil or replace the insert.

Leaking at the valve connection

Ensure the connection is tightened to the correct torque using proper plumbing tools and verify that the olives are properly seated on the pipe.

Pros and Cons

Pros

  • Compatible with all UK heating systems
  • Includes both TRV and lockshield for a complete solution
  • Clean, modern white finish matches most decor
  • Energy-efficient temperature management

Cons

  • Specific to vertical pipework installations
  • Requires professional plumbing knowledge for correct installation
  • Only fits 15mm pipework systems

Setup, Compatibility & Care

Installation should always be performed by a qualified plumber to ensure the system is properly balanced and leak-free. The set is compatible with standard 15mm copper or plastic pipework and standard 1/2" BSP radiator tail connections.

Maintenance Tips:

  • Keep the thermostatic head free of dust to ensure accurate temperature sensing.
  • Periodically check the valve connections for any signs of weeping or moisture.
  • Do not use harsh chemical cleaners on the finish; a soft, damp cloth is sufficient to maintain the white exterior.
  • If the radiator is not heating, check the pin on the thermostatic valve to ensure it is not stuck, a common occurrence after summer dormancy.

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