Plumbing involves a wide range of technical aspects, including the installation, maintenance, and repair of plumbing systems. Some of the key technical aspects of plumbing include:

Pipe installation: Plumbers are responsible for installing and maintaining a variety of pipes, including those made from materials such as copper, PVC, and PEX. They must be able to properly size, cut, and thread pipes, as well as properly seal joints to prevent leaks.

Drainage systems: Plumbers are responsible for installing, maintaining, and repairing drainage systems, including sinks, toilets, and showers. They must be familiar with the different types of drainage systems, such as gravity-based and pressure-based systems, and know how to properly vent and trap them.

Water supply systems: Plumbers are responsible for installing, maintaining, and repairing water supply systems, including the pipes, valves, and fixtures that bring water into a building. They must be familiar with the different types of water supply systems, such as municipal systems and private well systems, and know how to properly size, install, and maintain them.

Gas systems: Plumbers are responsible for installing, maintaining, and repairing gas systems, including gas lines, gas appliances, and gas meters. They must be familiar with the different types of gas, such as natural gas and propane, and know how to properly size, install, and maintain gas systems.

Ventilation systems: Plumbers are responsible for installing, maintaining, and repairing ventilation systems, including exhaust and supply vents. They must be familiar with the different types of ventilation systems, such as natural ventilation and mechanical ventilation, and know how to properly size, install, and maintain them.

Sewer systems: Plumbers are responsible for installing, maintaining, and repairing sewer systems, including the pipes and fixtures that carry waste water away from a building. They must be familiar with the different types of sewer systems, such as gravity-based and pressure-based systems, and know how to properly vent and trap them.

Water heaters: Plumbers are responsible for installing, maintaining, and repairing water heaters, including electric, gas, and tankless water heaters. They must be familiar with the different types of water heaters and know how to properly size, install, and maintain them.

Code compliance: Plumbers must be familiar with local and national codes and regulations, and must ensure that all of their work complies with these codes. They must also be able to obtain the necessary permits and inspections required by local codes and regulations.

Tools and equipment: Plumbers must be familiar with and able to use a wide range of tools and equipment, such as pipe wrenches, pipe cutters, pipe threaders, soldering equipment, and pressure gauges.

In summary, plumbing involves a wide range of technical aspects, including the installation, maintenance, and repair of plumbing systems. These technical aspects include pipe installation, drainage systems, water supply systems, gas systems, ventilation systems, sewer systems, water heaters, code compliance, and tools and equipment. Plumbers must be familiar with local and national codes and regulations, and must ensure that all of their work complies with these codes. They must also be able to obtain the necessary permits and inspections required by local codes and regulations. Additionally, plumbers should also have knowledge of the different types of materials used in plumbing such as Copper, PVC, PEX, Cast Iron etc and the properties of each of them and the suitability of them in different situations. They should also be able to identify and diagnose problems with plumbing systems, and come up with effective solutions to fix them. They must also be able to communicate effectively with clients, and be able to explain the work that needs to be done, and the reasons for it. They should also be able to work efficiently and safely, and be able to work well as part of a team.