Derry Bold - Chrome Thermostatic Radiator Valve & Lockshield Straight 10mm
Product code: 50189
Control radiator warmth with greater precision
The Derry Bold Chrome thermostatic radiator valve and matching lockshield give you room-by-room control over an individual radiator while keeping the installation visually coordinated. Its straight 10mm fitting and liquid sensor combine practical connection design with automatic thermostatic response as the room temperature changes.
Why choose these radiator valves?
- Take more control of individual room comfort: The valve automatically alters hot-water flow through the individual radiator in response to the room temperature and selected setting.
- Avoid heating a room more than you need: Restricting flow when less heat is needed can help prevent an already-comfortable room from continuing to receive unnecessary radiator heat.
- 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.
- Finish both sides of the radiator with one set: The set includes the TRV and matching lockshield together, giving you both radiator valves in one coordinated purchase.
- Use a fitting designed around your pipe direction: The straight format is suited to aligned pipework and radiator connections, avoiding an unnecessary change in direction.
- 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: The liquid sensor responds to changes in surrounding temperature to operate the thermostatic mechanism automatically.
- Choose a finish that complements the installation: The modern valve shape keeps the installation looking clean and contemporary. In polished & un-lacquered Chrome, the set can be matched deliberately with the radiator finish or used as a contrasting detail.
- Get extra peace of mind after fitting: The included 3 years guarantee adds confidence when choosing a valve set for ongoing everyday use.
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
Need help calculating the heat output for your room?
Guarantee Length: 3 Years
Collection: Derry Bold
Supplied with: TRV Valve Head Head, Lockshield, Pair of 10mm Valve Reducers and Fitting Instructions Included
Colour: Chrome
Finish: Polished & Un-Lacquered
Heat Source: Central Heated/Hot Water
Material: Brass/ABS
Style: Modern
Product Assurances: CE Marked,3 Years
Fitting Type: Straight
Sensor Type: Liquid
SKU DER-TRV-CS-VR10
GTIN:5056675404761
Dry Mass (kg):0.5395kg
Height: 118mm
Width:79mm
Control Type: Multi Temperature Control
- Free delivery options (UK Mainland, Northern Ireland/Highlands/Islands)
- Next working day delivery options (selected products & locations)
- We deliver between 8am and 6pm
- Contact us to delay delivery/request a specific day
- Limitless (that's right, no time limit!) returns on eligible items.
- Free of charge: either we will arrange collection/send a returns label, or we’ll refund your reasonable return postage costs.
- Returns for reasons other than damage or faults can only be accepted if the item is unused, unfitted, and returned in its original packaging and resaleable condition.
- Please note that made-to-order, personalised, or bespoke items manufactured to your specification are exempt from the standard cancellation rights under the Consumer Contracts Regulations and cannot be returned unless faulty or damaged.
- Whilst all our products pass strict quality standards, on very rare occasions an item may arrive damaged. We ask that you inspect the packaging before signing for delivery and note any visible damage when signing, or refuse the delivery and state damage as the reason.
- If you discover damage after accepting delivery, please contact us as soon as possible with photographs of the damage and packaging.
- Once damage or a fault has been confirmed, we will either replace the item completely free of charge or provide a full refund, including any applicable delivery charges.
-
How can I contact you?
You can message us on live chat. We aim to reply in one minute, between 9am - 5:30pm. After 5:30pm, we'll create a ticket and get back to you asap.
-
Where do you deliver?
We deliver to the whole of the UK and Northern Ireland - including the highlands and islands.
We are currently unable to offer international delivery. However, you can place an order for collection and arrange to have a courier of your choice collect the order and delivery it to you.
-
Who will deliver my order?
Our two primary couriers for UK Radiators products are Royal Mail and DX Express. Your courier will depend on the size and weight of the items on your order.
For example a pair of valves will be sent to you with Royal Mail, whereas a Column radiator will be sent with DX.
Tracking is provided for all orders dispatched from our warehouse.
If you order a Terma product, your item(s) will be coming directly from their warehouse.
The couriers they use are Stop Start and Parcelforce, and tracking is provided where possible.
-
Can I choose a specific time or day for my delivery?
If, for any reason, you would like to delay your delivery, please contact one of the customer service team as soon as you have placed your order, who will be able to assist you.
We are currently unable to request specific delivery time slots with our couriers.
Some of our couriers will advise you of a smaller time slot for your delivery, but unless otherwise stated, deliveries can take place any time between 7am and 7pm.
-
Can I upgrade my delivery?
We offer the option to upgrade delivery to either Two Man VIP delivery to a room of your choice, or Next Working Day delivery. Upgrade availability is dependant on the size of product and delivery location. Once dispatched, your order is sent on the delivery service chosen at checkout. This cannot be changed after dispatch.
-
Can I send orders to a different address?
You can change the shipping address to a different address if your billing address matches what's registered against your payment method.
However, this can only be done when placing the order.
We are unable to change the delivery address after the order has been placed and dispatched. In this instance, the order would need to be cancelled and refunded, and a new order placed with the correct delivery address.
Derry Bold - Chrome Thermostatic Radiator Valve & Lockshield Straight 10mm
Product code: 50189
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Derry Bold - Chrome Thermostatic Radiator Valve & Lockshield Straight 10mm
The Alpha White Column Radiator (H500mm × W768mm) offers the perfect mix of classic elegance and dependable performance.
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Watts & BTUs (British Thermal Units) Explained
What is a Watt?
Watts are our main unit of energy/power in the UK, commonly associated with lightbulbs and Home Energy performance certificates (EPCs).
What is a BTU?
BTUs are the unit of measurement used to portray a radiators heat output and a rooms heating requirement. 1 Watt is equal to 3.41 BTUs.
Why are they important?
We buy radiators to heat our homes, right? So, we need a way of knowing if a radiator is powerful enough to heat the room that we are shopping for - Watts and BTUs provide us with a value that makes its easier to compare radiators and ultimately choose the right one for our heating requirement.
Need help figuring out how much heat your room needs?
Our fast and easy-to-use BTU calculator can help you:
- Work out a heating requirement value (in BTUs & Watts) for your room
- Show you in-stock radiator recommendations that can fulfil this heat requirement
Delta (Δ) Ratings Explained
What is a Delta (Δ) Rating?
When discussing heat outputs, the Delta rating is the difference between the temperature of the water inside the heating system and the desired temperature of the room.
What does the value represent?
In simple terms, this value is about heat loss. Heating a room only works, if the radiator output exceeds the heat loss of the room.
We use this calculation to make it easy to choose a radiator that will have a heat output that exceeds the heat loss of the room when connected to your heating system type.
If you don't know the room heat loss, you can use our calculator to find out.
What Delta Rating should I use?
- Δ50 = Gas or oil boiler with a flow temperature of around 75°C and a return temperature of around 65°C.
- Δ30 = Low temperature systems e.g heat pumps.
Control radiator warmth with greater precision
The Derry Bold Chrome thermostatic radiator valve and matching lockshield give you room-by-room control over an individual radiator while keeping the installation visually coordinated. Its straight 10mm fitting and liquid sensor combine practical connection design with automatic thermostatic response as the room temperature changes.
Why choose these radiator valves?
- Take more control of individual room comfort: The valve automatically alters hot-water flow through the individual radiator in response to the room temperature and selected setting.
- Avoid heating a room more than you need: Restricting flow when less heat is needed can help prevent an already-comfortable room from continuing to receive unnecessary radiator heat.
- 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.
- Finish both sides of the radiator with one set: The set includes the TRV and matching lockshield together, giving you both radiator valves in one coordinated purchase.
- Use a fitting designed around your pipe direction: The straight format is suited to aligned pipework and radiator connections, avoiding an unnecessary change in direction.
- 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: The liquid sensor responds to changes in surrounding temperature to operate the thermostatic mechanism automatically.
- Choose a finish that complements the installation: The modern valve shape keeps the installation looking clean and contemporary. In polished & un-lacquered Chrome, the set can be matched deliberately with the radiator finish or used as a contrasting detail.
- Get extra peace of mind after fitting: The included 3 years guarantee adds confidence when choosing a valve set for ongoing everyday use.
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
Need help calculating the heat output for your room?
Guarantee Length: 3 Years
Collection: Derry Bold
Supplied with: TRV Valve Head Head, Lockshield, Pair of 10mm Valve Reducers and Fitting Instructions Included
Colour: Chrome
Finish: Polished & Un-Lacquered
Heat Source: Central Heated/Hot Water
Material: Brass/ABS
Style: Modern
Product Assurances: CE Marked,3 Years
Fitting Type: Straight
Sensor Type: Liquid
SKU DER-TRV-CS-VR10
GTIN:5056675404761
Dry Mass (kg):0.5395kg
Height: 118mm
Width:79mm
Control Type: Multi Temperature Control
- Free delivery options (UK Mainland, Northern Ireland/Highlands/Islands)
- Next working day delivery options (selected products & locations)
- We deliver between 8am and 6pm
- Contact us to delay delivery/request a specific day
- Limitless (that's right, no time limit!) returns on eligible items.
- Free of charge: either we will arrange collection/send a returns label, or we’ll refund your reasonable return postage costs.
- Returns for reasons other than damage or faults can only be accepted if the item is unused, unfitted, and returned in its original packaging and resaleable condition.
- Please note that made-to-order, personalised, or bespoke items manufactured to your specification are exempt from the standard cancellation rights under the Consumer Contracts Regulations and cannot be returned unless faulty or damaged.
- Whilst all our products pass strict quality standards, on very rare occasions an item may arrive damaged. We ask that you inspect the packaging before signing for delivery and note any visible damage when signing, or refuse the delivery and state damage as the reason.
- If you discover damage after accepting delivery, please contact us as soon as possible with photographs of the damage and packaging.
- Once damage or a fault has been confirmed, we will either replace the item completely free of charge or provide a full refund, including any applicable delivery charges.
-
How can I contact you?
You can message us on live chat. We aim to reply in one minute, between 9am - 5:30pm. After 5:30pm, we'll create a ticket and get back to you asap.
-
Where do you deliver?
We deliver to the whole of the UK and Northern Ireland - including the highlands and islands.
We are currently unable to offer international delivery. However, you can place an order for collection and arrange to have a courier of your choice collect the order and delivery it to you.
-
Who will deliver my order?
Our two primary couriers for UK Radiators products are Royal Mail and DX Express. Your courier will depend on the size and weight of the items on your order.
For example a pair of valves will be sent to you with Royal Mail, whereas a Column radiator will be sent with DX.
Tracking is provided for all orders dispatched from our warehouse.
If you order a Terma product, your item(s) will be coming directly from their warehouse.
The couriers they use are Stop Start and Parcelforce, and tracking is provided where possible.
-
Can I choose a specific time or day for my delivery?
If, for any reason, you would like to delay your delivery, please contact one of the customer service team as soon as you have placed your order, who will be able to assist you.
We are currently unable to request specific delivery time slots with our couriers.
Some of our couriers will advise you of a smaller time slot for your delivery, but unless otherwise stated, deliveries can take place any time between 7am and 7pm.
-
Can I upgrade my delivery?
We offer the option to upgrade delivery to either Two Man VIP delivery to a room of your choice, or Next Working Day delivery. Upgrade availability is dependant on the size of product and delivery location. Once dispatched, your order is sent on the delivery service chosen at checkout. This cannot be changed after dispatch.
-
Can I send orders to a different address?
You can change the shipping address to a different address if your billing address matches what's registered against your payment method.
However, this can only be done when placing the order.
We are unable to change the delivery address after the order has been placed and dispatched. In this instance, the order would need to be cancelled and refunded, and a new order placed with the correct delivery address.
