The capillary thermostat is a temperature-control device that uses the principle of thermal expansion to actuate or control the operation of heating source in appliances, like water heaters. The capillary thermostat can regulate the heating of the water when it reaches the desired temperate, and prevents overheating which may cause the appliance to be unsafe for the environment or be damaged. We can manufacture this capillary thermostat as per your request, or drawings, or you can select from one of the following types of thermostat you need.
Jaye Heater Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of caplilary thermostat used in water heater in China, also supports custom service. Welcome to wholesale high quality caplilary thermostat used in water heater at competitive price from our factory.
The capillary thermostat is a temperature-control device that uses the principle of thermal expansion to actuate or control the operation of heating source in appliances, like water heaters. The capillary thermostat can regulate the heating of the water when it reaches the desired temperate, and prevents overheating which may cause the appliance to be unsafe for the environment or be damaged. We can manufacture this capillary thermostat as per your request, or drawings, or you can select from one of the following types of thermostat you need.

| Feature | Typical Values |
| Electrical Voltage | 220–240V AC or 110–120V AC |
| Electrical Current | Typically 10A to 20A for water heaters |
| Contact Type | Normally open (NO) or normally closed (NC) |
| Reset Type | Manual |
| Operating Temperature | 60°C to 320°C |
| Capillary Tube Length | 500 mm to 2000 mm (customizable for specific installations) |
| Sensor Material | Copper or stainless steel |
| Bulb Size | Varies by model, usually 6–12 mm in diameter and 50–100 mm in length |
| Life Cycle | Rated for 100,000+ |




Why Choose Our Capillary Thermostat
1-High Sensitivity: Fast react to low temperature changes.
2-Much Adjustability: Usually adjustable anywhere from 30 °C to 90 °C (or more in the case of industrial models).
3-Safety Features: Thermal cut-off prevents overheating.
4-Durable: Mechanically resistant with permanency features.




You can also use capillary thermostats in various Household Appliances beyond water heaters. Here are some common and specialized uses:
1-Ovens and Cooktops
Maintains precise cooking temperatures.
Ensures safety by cutting off heating when the set temperature is exceeded.
2-Refrigerators and Freezers
Regulates internal temperatures to keep food at optimal conditions.
Prevents overcooling or freezing in specific zones.
3-Electric Irons
Controls the soleplate temperature for different fabric settings.
4-Toasters and Sandwich Makers
Ensures consistent heating to achieve desired toasting levels.

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