Duplex filters are a valuable solution for applications where continuous fluid filtration is essential, and uninterrupted operations are crucial. They provide a balance between efficient filtration and minimal downtime by allowing for on-the-fly switching between two filter housings. This design ensures that the system remains operational even during maintenance or replacement of filter elements.
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While one filter chamber of the duplex filter is in filtering mode, the other chamber is always with a cleaned filter element off line. The liquid passes through the filter element and over time the pressure drop in this filter chamber will increase. The increased pressure drop is an indication that particles have been accumulated and cleaning is required. Optional a differential pressure indicator can be installed on the duplex strainer.
By activating the switch plug, the clean filter chamber will be put in operation and the dirty filter chamber is simultaneously switched off. Switching to the clean filter chamber is carried out without a pressure surge.
For cleaning, the contaminated filter chamber is depressurized by the vent screw, the housing cover is
removed and the filter element has to be removed. The filter element is cleaned by flushing it with a cleaning fluid and subsequently blown out using compressed air.
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BOLL Duplex filters offer several advantages tailored to ensure uninterrupted operation and enhanced safety in industrial processes:
Continuous Operation Assurance: With BOLLFILTER Duplex filters, your process can keep running seamlessly. The duplex design allows for continuous filtration even during maintenance or cleaning procedures. By switching between filter elements, one side remains operational while the other undergoes maintenance, ensuring uninterrupted production.
Variety of Filter Elements: BOLLFILTER Duplex filters offer a wide range of filter elements to accommodate diverse filtration needs. Whether your process requires fine filtration, coarse filtration, or specialized media for specific contaminants, BOLLFILTER provides various options to optimize filtration efficiency and performance.
Increased Safety: BOLLFILTER Duplex filters incorporate Double Block and Bleed (DBB) technology, enhancing safety during maintenance or element changeouts. DBB ensures that both inlet and outlet ports are sealed off simultaneously, isolating the filter chamber from the process flow. This feature prevents fluid bypass and minimizes the risk of contamination or leaks, enhancing operational safety.