How does a gas pressure regulator work?

The pressure in a gas bottle is determined by the temperature. The pressure is therefore not always the same. To ensure that the pressure is always constant, use a gas pressure regulator. When connecting the gas pressure regulator, ensure that it indicates the same pressure value as the equipment to be connected (30 mbar).


An approved gas hose

You must also ensure that you only use approved propane or butane gas hoses. You can recognize an approved gas hose by the print “NEN5654” and the production year. When the hose doesn’t have pre-assembled cable glands, always use hose clamps on both sides so that the hose cannot come loose. To prevent dehydration, it is important that you replace the hose every 3 – 5 years. Always close the gas tap when connecting and changing the gas bottle, also when gas bottles are empty . Always open the gas tap by hand. Do not use tools or force to unscrew the gas tap. If you cannot open the gas tap yourself, return the gas bottle to your supplier.

What are the most important parts of a pressure regulator?

The pressure regulator consists of two “chambers”.

  1. The one (through which the gas flows) is isolated from the outside air and contains the reducing valve.
  2. The other is connected to the outside air through the ventilation opening and contains the controller (this is a spring with a certain pressure).

How does a gas pressure regulator work?

The propane or butane gas is under high pressure in a storage container (a bottle or tank for propane and butane gas) and enters the pressure regulator. The pressure on the inside of the pressure regulator (chamber) rises. As a result, the inner membrane and the valve attached to it are pushed away, thereby limiting the gas flow. When the gas comes out of the pressure regulator, the internal pressure decreases again and the diaphragm is pushed back again by the spring. This opens the valve and more gas flows into the pressure regulator. The pressure is therefore mainly dependent on the pressure of the spring, which is set at a certain flow rate.

These two “chambers” are separated from each other by a flexible elastomeric membrane (also called aperture).