Fabricated Duplex Strainer

Fabricated duplex strainers (double basket strainers) are used when the flow or process cannot be shut down and must continue to flow. Thus, duplex strainers allow you to shut one basket for cleaning while the other is still in operation. Moreover, double basket strainers are normally used where larger amounts of trash/solids need to be removed. The screen is in the shape of a basket and removed from the top of the fabricated duplex strainer. Fabricated duplex strainers can come with a blow-off connection for manual or automatic cleaning.

Duplex Strainers

The main application for duplex strainers is in fluid handling systems such as cooling water, fire lines, hydrocarbon, fuel lines, freshwater, pump suction, compressors, and lubrication systems. A fabricated duplex strainer’s body can be casting or fabricated material. Always check material compatibility with the process. Screens should be sized to meet the perforations, and mesh requirements.    

Fabricated duplex strainers gaskets, end connections, and blow-off connections should be part of the sizing equation. Contact us for more information or for a quote. Read about industrial strainers.

Double Basket Strainer

Duplex strainer or twin basket strainer is a type of filter built into a fuel, oil or water piping system and it is used to remove large particles of dirt and debris. The duplex strainer system usually consists of two separate strainer baskets housings. The system also contains a valve handle placed between the two baskets to divert the flow of liquid to one strainer while the other is being cleaned. On some strainers, the valve will work automatically, and the strainer will perform a self-cleaning operation.

These types of strainers are installed in pipeline systems where flow cannot be stopped. Depending upon their NB size they are capable of filtration up to 40 µm. Basket Strainers find use in industries where impurities are mostly solids. Unlike other types of strainers, it is easy to conduct maintenance on these strainers.

Duplex strainers are mainly used in various industries such as process industry, power industry, chemical industry, oil and gas industry, pulp and paper industry, pharmaceutical industry, metals and mining industry, water and waste management, firefighting industry, refineries and petrochemical plants. Strainers are used to remove hazardous elements that might cause partial or complete breakdown of operations if they get into the system.