Where are duplex strainers typically located in a fuel oil system?

Duplex strainers are critical components in a fuel oil system, specifically situated on the suction and discharge sides of a fuel oil pump. This placement is vital for maintaining fuel purity and ensuring the efficient operation of the pump. The primary function of the duplex strainer is to remove particulate contaminants from the fuel oil, which could damage the pump and ultimately affect the overall performance of the boiler system.

By positioning duplex strainers at these points, operators can ensure that the fuel entering the pump is clean, thereby extending the lifespan of the equipment and preventing maintenance issues. Additionally, the duplex feature allows for one strainer to be in operation while the other is cleaned or replaced without interrupting the fuel supply, enhancing the reliability of the fuel system.

In contrast, strainers located at other points, such as on the supply and return lines or at the storage tank, would not provide the same level of protection directly to the pump, which is more vulnerable to damage from contaminants. Similarly, the space between the burner and the fuel nozzle is typically focused on fuel delivery, rather than contamination removal at the pump level. Hence, the optimal placement of duplex strainers is indeed on the suction and discharge sides of the fuel oil pump, ensuring effective filtration and protection.