Surface Thermostats
A surface thermostat is clamped or spring-fixed to the pipe surface, senses the water temperature inside the pipe from outside and changes a contact at the set value.
It is used for circulation pump control, underfloor heating over-temperature protection and solar circuits, allowing installation without a pocket. Setting range and contact arrangement are chosen per model.
Main Applications
- Circulation pump control
- Underfloor heating over-temperature protection
- Solar circuits
- Boiler return line control
- Calorifier charging pump
- Retrofit control on existing lines
Technical Data
| Type | Surface (pipe surface) thermostat |
|---|---|
| Sensing | Sensor in contact with the pipe surface |
| Setting range | Depending on model |
| Contact | Depending on model |
| Contact rating | Depending on model |
| Mounting | Clamp / spring on the pipe (depending on model) |
| Pipe size | Depending on model |
| Protection class | Depending on model |
Material Options
| Part | Surface thermostat | Immersion thermostat |
|---|---|---|
| Mounting | Outside the pipe | In a pocket |
| Line intervention | Not needed | Pocket needed |
| Response | Slower (via surface) | Faster (direct) |
| Typical use | Pumps and protection | Boiler control |
Which material? A surface thermostat must be fixed with good contact to a clean, uninsulated pipe surface; heat transfer paste improves sensing. Setting and contact data are checked for the chosen thermostat.
Advantages
Pocketless Mounting
- Without draining the line
Practical Application
- Retrofit on existing systems
Protective Function
- Underfloor heating safety
Pump Control
- Energy saving
Construction and Design Features
- Surface sensor
- Fixing clamp or spring
- Setting knob
- Contact and terminals
Send the pipe size, setting range and controlled device; we will confirm a suitable surface thermostat.
How to Choose?
- Pipe and mountingDetermine the fixing element for the pipe size.
- Surface preparationClean the contact surface and apply paste.
- Setting rangeChoose a range for the controlled temperature.
- Contact loadMatch pump or boiler load to the contact.
Complementary Products
Why ORFA?
Other Thermostats
Frost Protection Thermostats
Frost protection thermostats protect air and water coils from freezing by reacting when temperature falls.
Details →
Capillary Thermostats
Capillary thermostats sense temperature through a capillary bulb and switch a contact at the set value.
Details →
Boiler Thermostats
Boiler thermostats control the burner or pump to keep boiler water at the set temperature.
Details →
Incubator Thermostats
Incubator thermostats keep the temperature in incubators steady and precise.
Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.