Drayton TRV4 Classic Range
Drayton TRV4 Classic White & Chrome Integral Sensing Head – 07 25 006
The Drayton TRV4 Classic Integral Sensing Head (07 25 006) is a replacement thermostatic radiator valve head designed for compatible Drayton TRV4 valve bodies. Finished in classic white and chrome, it features a liquid-filled temperature sensor for responsive room temperature regulation, a temperature-range limiting function and a frost protection setting. As a standalone sensing head, it allows compatible TRV4 installations to be updated or repaired without replacing the entire valve assembly.
Designed for practical heating control, the Drayton TRV4 Classic sensing head offers a stated temperature setting range of approximately 10°C to 30°C, with numbered settings from 1 to 5 and a maximum setting. Its liquid-filled sensor has a specified sensitivity of 0.22 mm/°C, while a stated response time of 20 minutes supports responsive adjustment to changes in room temperature.
The integral head includes a range-limiting function to help installers restrict temperature adjustments where required. Its frost protection setting, marked with an asterisk, is specified below 8°C. The head can be installed vertically or horizontally, and its adjustable fixing allows the orientation to be set to suit the installation.
Compatibility is important: this sensing head is intended for Drayton TRV4 valve bodies and is not compatible with TRV3 bodies. For older TRV3 installations, the supplied product information recommends using the dedicated TRV4 conversion head.
TRV4 Compatible
Liquid-Filled Sensor
White & Chrome
TELL Class I
BS EN 215
Key Product Highlights
Responsive Temperature Sensing
Liquid-filled sensing technology with a stated sensitivity of 0.22 mm/°C helps regulate radiator output in response to room temperature.
TELL Class I Rating
The supplied specifications identify the head as TELL Class I rated for thermostatic valve performance and energy efficiency.
Adjustable Head Orientation
The head can be fitted vertically or horizontally to accommodate different installation layouts.
Replacement Without Pipework Changes
Designed as a standalone replacement head, it can replace a compatible TRV4 head without changing the pipework.
Key Features
1. Liquid-Filled Sensing Element
The liquid-filled sensor has a specified sensitivity of 0.22 mm/°C for responsive thermostatic radiator control.
2. TELL Class I Performance
The supplied product information lists TELL Class I certification and BS EN 215 approval.
3. Temperature-Range Limiting
The built-in range-limiting collar allows installers to restrict the maximum temperature setting where required.
4. Frost Protection Setting
The asterisk-marked frost protection setting is specified below 8°C to help protect against low room temperatures.
5. Flexible Installation Orientation
The integral sensing head can be positioned vertically or horizontally, with an adjustable fixing for orientation.
6. Classic White & Chrome Finish
The classic finish matches the stated TRV4 Classic styling and provides a practical replacement for compatible existing heads.
What's Included
- 1 × Drayton TRV4 Classic integral sensing head, white and chrome
This is a standalone sensing head. The valve body and pipework components are not stated as included.
Ideal Applications
- Replacing a faulty or worn sensing head on a compatible Drayton TRV4 valve body
- Refreshing the appearance of an existing TRV4 installation with a white and chrome head
- Heating installations requiring temperature-range limiting
- Installations where a vertical or horizontal head orientation is preferable
- Compatible domestic, commercial, HMO and social housing heating applications
Technical Specifications
| Specification |
Details |
| Brand |
Drayton by Schneider Electric |
| Product Name |
TRV4 Classic Integral Sensing Head |
| Product Type |
Integral standard sensing head |
| Manufacturer Stock Code / MPN |
07 25 006 |
| EAN |
5016254100231 |
| Finish |
Classic white and chrome |
| Sensor Type |
Liquid-filled integral sensor |
| Approximate Setting Range |
10°C to 30°C; settings 1–5 and MAX |
| Frost Protection Setting |
Below 8°C, marked with * |
| Maximum Sensor Temperature |
50°C |
| Sensor Sensitivity |
0.22 mm/°C |
| Hysteresis |
0.4 K |
| Response Time |
20 minutes |
| Water Temperature Influence |
0.8 K |
| Differential Pressure Influence |
0.15 K |
| Control Accuracy |
0.6 K |
| Standards and Ratings |
BS EN 215; TELL Class I; Keymark listed |
| Keymark Validity Listed |
31 March 2029 |
| Compatibility |
Drayton TRV4 valve bodies only; not compatible with TRV3 bodies |
| Head Orientation |
Vertical or horizontal |
Frequently Asked Questions
1. Will this sensing head fit my existing TRV valve body?
This head is designed for compatible Drayton TRV4 valve bodies. It is not compatible with TRV3 bodies. For retrofitting an older TRV3 body, the supplied information recommends the dedicated TRV4 conversion head.
2. Can the head be fitted horizontally?
Yes. The integral sensing head can be installed vertically or horizontally, and its adjustable fixing allows the orientation to be set to suit the installation.
3. What does the range-limiting feature do?
The built-in range-limiting collar allows an installer to restrict the maximum temperature setting, helping prevent occupants from adjusting the control beyond the selected limit.
4. What is the difference between this head and a remote sensing head?
This is an integral sensing head, with the sensor incorporated into the head fitted to the valve. A remote sensing head uses a separate sensing position connected to the control. Choose the type suited to the radiator location and installation requirements.
5. Does this head need electrical power?
No electrical power is specified for this thermostatic sensing head. It uses a liquid-filled sensing element for temperature-responsive operation.
Order the Drayton TRV4 Classic Sensing Head
Replace a compatible TRV4 thermostatic head with the classic white and chrome Drayton sensing head.
