Basket Strainers

What is a Basket Strainer?

Basket strainers allow a wide range of fluids to be strained & filtered and hold solid components of almost any size.  They are all conveniently retraceable & easy-to-clean baskets. Depending on the application specification, basket strainer components can be delivered in single cylinder, double cylinder, multi-cylinder & pleated styles. They are designed with filter housing, perforated cage-supported filter element, a positive sealing arrangement to prevent any bypass and end link choices.

A basket strainer in an official statement defined as:

“A closed vessel with cleanable screen element designed to remove and retain foreign particles down to 0.001-inch diameter from various flowing fluids.“

How Does Basket Strainer Work?

When the filter is operating, the water to be filtered enters the strainer basket thru the inlet, flows through the filter panel, and enters the desired pipe through the process flow outlet. Particle/solid impurities present in the water are stuck inside the basket filter screen. With this continuous flow, more and more particles are caught, and the speed of filtering gets slower over time. However, the transported sewage also runs constantly and the filter hole would get narrower and smaller, this results in a pressure differential between the inlet and the outlet. As the gap between inlet and outlet pressure exceeds the fixed value, the differential pressure sensor transmits the electrical signal to the controller, and the control mechanism begins the drive motor to rotate the shaft via the transmitting element. At the same time, the blowing port is opened and discharge of debris takes place from the blowing port.  As the filter screen is cleaned by blowdown, the differential pressure decreases to the minimum value, the system comes back to the original filtering condition, and the system works normally. The filter consists of a casing, several filter components, a backwashing device, a differential pressure regulator, etc. During operation, the liquid reaches the lower chamber of the strainer through the inlet and the inside chamber of the straining element through the diaphragm opening. It is an innovative, effective, and easy-to-use automated filtering system.

Features And Benefits Of The Basket Strainer

People do not always know how important it is for companies to use strainers and filters. For industrial uses, strainers are employed to extract larger unwanted particles, such as sand, dirt, organic material, and chemical lesions from the pipeline or stream of industrial components, while filters are used to eliminate smaller solids or even chemical components that are not visible.

In situations where fast flow and high pressure are important, the basket strainer is perfect. They are easy to maintain or clean – the cover is removed which allows easy access to the strainer element. This allows them to be easily replaced, washed, or repaired. Two layers of basket strainers are frequently used, and they are called duplex strainers. These are very convenient because they allow the operation to proceed while the strainer is washed or serviced, so there is no need to interrupt the output of the strainers. This makes it quite practical and easy to deal with.

Applications Of The Basket Strainer

Basket strainers are extremely useful in petrochemical processes because they are capable of straining unwanted solid particles from fuel lines and distribution pipelines, and normally, further down the feedline, some filters are used to purify the material even further.

The pharmaceutical industry also uses industrial basket strainers in all of its operations. Both prescription items are designed to make individuals feel better. This ensures that the goods must conform with the best sanitary standards in the whole manufacturing process. The use of a sanitary 3A certified wire basket strainer during the manufacturing process would ensure that the goods are suitable for human use.

Another sector that is highly based on the basket strainer concerns the manufacture of paint. It is important that the final product is clear of all unwanted solids, and that the paint is smooth and simple to apply. Filtration systems are often used in some situations to ensure that the final product is consistent and without any lumps or particles that can impact the application and quality of the paint after applying it.

Many such applications are there for which basket strainers are utilized for filtration purposes such as the Power industry, Environmental industry, Food, and chemical industry, etc.

Selection Of Right Basket Strainer

A separate basket strainer could be needed for different use. Before settling on a strainer, consider the particular functions of your pipeline. Significant considerations include the pressure and temperature specifications of your system, the type of liquid flow (corrosive, abrasive, etc.), the size of the debris present in the liquid, and the frequency of cleaning and maintenance of the basket strainer. A duplex-style basket strainer can also be considered that has two strainer baskets which are fed by three-way valves. This device allows one basket to be washed and serviced while the other retains its flow.

How Do You Clean A Basket Strainer?

In comparison to filters that need to be replaced on a regular basis, basket strainers can be used indefinitely as long as they are regularly washed and maintained. Maintaining pressure in high-flow systems is essential for a working pipeline.  Pressure gauges can be installed on either side of the basket strainer which can alert you to possible line irregularities. Pressure building up in the strainer means that the strainer has to be removed and washed. Failure to manage the strainer may cause a significant clog, causing the strainer to be replaced, so be careful to control the pressure closely.

In addition to pressure readings, frequent cleaning is recommended to ensure the durability of the strainer. It is necessary to remember that before removing and cleaning a basket strainer, you must depressurize the system pipe where the filter is present, as the maintenance of a pressurized strainer could result in personal injury or harm to the machinery. After extraction of the basket filter element, flush the strainer and soak it in a washing solution. Scrub with a brush if needed, and avoid causing the debris to harden on the mesh. To stop full device shutdowns, you may want additional screens to be used during the cleaning procedure.

In Summary

Basket strainers are no longer a simple cast body with a wire mesh filtering element but are technically, highly refined piece of equipment that is now used to handle some of the most critical liquids in a challenging system environment. Choosing the right Basket strainer as per the requirement saves money not only by protecting the downstream equipment but also lowers the operation and maintenance cost of machinery.

NTGD Valve is a professional basket strainer manufacturer, please feel free to contact me if you need any help.