Burner flame flickers

If the burner flame on your gas stove flickers, it might be due to one of the following:

• It may be due to a faulty gas regulator. If this is the case, then you’ll also find that the flames will be too high or too low. You can fix the fault by changing the thermocouple – find a new thermocouple here.
• The error may be due to incorrect nozzles being used - or the fine adjustment after nozzle replacement not being carried out correctly. A distinction is made between three gas sources: Liquefied petroleum gas (LPG), natural gas, and town gas. Each type of gas has its own pressure and the hole in the nozzle is therefore decisive for the maximum amount of gas that reaches the flare. In a nozzle set, there will often be a nozzle for each gas burner. Individual burners - the so-called wok burners - can have two nozzles. The nozzle hole size (value) is stamped on the nozzle and is different depending on the size. The bigger the flare, the higher the value. If the wrong nozzles have been used, you will be able to find new ones here - you can read more about the three gas types below.

Installation of gas nozzles

A smaller margin (value deviation) is allowed, as the gas burner must be regulated/fine-tuned when changing nozzles so that the right flame size is obtained. A density test and a fan test must also be carried out.

Briefly about the three gas types: Town gas, natural gas and LPG

Town gas:

A gas pressure of 8 mbar is used. As the gas pressure is low, relatively speaking, the holes in the nozzles used on stoves for city gas are larger than for stoves that use bottled gas and natural gas. When a stove is connected to town gas, a pressure regulator must be located between the stove and the gas installation, which regulates the gas pressure down to the correct connection pressure. Pressure regulators are not used for LPG and natural gas. Find a pressure regulator here.

Natural gas:

Natural gas has a high content of methane, and a gas pressure of 20 mbar is used. This type of gas is used partly for heating homes and partly for cooking.

Liquefied petroleum gas (LPG):

LPG has the highest gas pressure of 30 mbar, and therefore nozzles with smaller holes are used compared to other types of gas. LPG consists of a mixture of propane and butane.

ATTENTION! We must point out that replacement of nozzles and other gas-related parts should always be carried out by an authorized plumber.