Definition and context of domestic gas installations

Domestic gas installations are systems designed to distribute and supply fuel gas, mainly natural gas or liquefied petroleum gas (LPG), within homes for uses such as heating, cooking and domestic hot water. These facilities comprise a network of pipes, control devices, valves and consumption points that guarantee a safe and efficient supply of gas.

The correct design, installation and maintenance of these networks is essential to prevent risks associated with the handling of flammable gases, such as leaks, explosions and poisoning. Therefore, they are subject to strict technical regulations that regulate both materials and construction and operating procedures.

Pipes and ducts

Pipes constitute the main element of any domestic gas installation, responsible for transporting gas from the source to the points of consumption. Galvanized steel, copper, polyethylene or polypropylene pipes are usually used, each with specific characteristics that determine its use depending on the type of gas and pressure.

Galvanized steel is strong and durable, suitable for fixed and high-pressure installations, although it requires protection against corrosion in humid environments. Copper is common for internal networks due to its ease of installation, corrosion resistance, and compatibility with natural gas and LPG. Plastics such as polyethylene are generally used in outdoor networks or flexible connections, due to their chemical resistance and flexibility.

The selection of pipes must also consider the working pressure, compatibility with the gas used and environmental conditions to ensure safety and durability.

Valves and control devices

Valves are essential components to control the flow of gas within the facility. There are various types, such as ball, gate and safety valves, that allow opening, closing or regulating the passage of gas according to operating needs or in emergency situations.