What is the primary function of the duplex strainer in the fuel oil system?

The primary function of the duplex strainer in the fuel oil system is to clean fuel oil. This equipment is designed to filter out contaminants and impurities from the fuel, preventing these particles from entering the machinery that relies on this oil for operation. By ensuring that the fuel is clean, the duplex strainer helps maintain the efficiency and longevity of engines and other equipment that depend on fuel oil.

Duplex strainers are particularly effective because they can be designed to allow for continuous operation; while one strainer is in use, the other can be cleaned or serviced without interrupting the flow of fuel. This filtration process is crucial in preventing wear and damage to components, as contaminated fuel can lead to malfunctioning onboard systems.