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Gas valve 420 thermostatic series "B3" (0.420.003)
Product description:
The gas valve 420 thermostatic series "B3" (0.420.003) is a thermoelectric flame control device designed to ensure the safe and efficient operation of gas appliances. This valve features an outlet for the pilot burner and is suitable for various types of gases.
Technical specifications
| Parameter | Value |
|---|---|
| Operating temperature | 0-80 °C |
| Maximum gas inlet pressure | 150 mBar |
| Opens at | < 200 mA |
| Closes at | > 40 mA |
| Mounting position | Any |
| Connections | Rp 1/4" ISO 7-1:1982 |
| Gas type | Families I, II, and III |
Tips for selecting a part
When selecting the gas valve 420 thermostatic series "B3", consider the following points:
- Ensure that the valve model matches the specifications of your appliance.
- Check the operating temperature and maximum gas pressure to avoid overheating and damage to the equipment.
- Pay attention to the electrical parameters (opening and closing current) to ensure compatibility with your system.
- Verify the connection type (Rp 1/4") for proper installation.
Possible causes of failure
Common causes of gas valve failure include:
- Overheating due to improper appliance operation.
- Clogging of the valve or connections, which can lead to incorrect opening/closing.
- Electrical faults caused by voltage fluctuations.
To prevent failures, it is recommended to perform regular maintenance and check the condition of the valve.
Replacement recommendations
Replacing the gas valve 420 thermostatic series "B3" involves the following steps:
- Disconnect gas and electricity from the appliance.
- Remove the old valve by disconnecting the tubes and electrical connections.
- Install the new valve, ensuring the connections are correct.
- Check the tightness of the connections to avoid gas leaks.
- Turn on the electricity and gas, and test the operation of the appliance.
Replacement difficulty
Replacing the gas valve has a medium level of difficulty and requires basic knowledge of gas equipment and electrical engineering. If you are unsure of your abilities, it is recommended to consult a professional technician.