pall filter Germany pall model pall price

pall filters are widely used in industrial and commercial fields, such as food, textiles, metallurgy, plastics, pharmaceuticals, building materials, papermaking, HVAC systems for industrial and commercial buildings, irrigation, wastewater treatment, sewage regeneration, municipal water supply, waterworks, large power plants, chemical enterprises, and emergency filtration. The filtration grade is determined by the water quality requirements of downstream water systems or equipment and the specific water usage scenarios. They are typically installed at the inlet of pressure reducing valves, relief valves, constant level valves, and other equipment. The filter consists of a housing, stainless steel filter screen, blowdown section, drive mechanism, and electrical control components.

pall filter principle

The filter element of the electronic water processor disc filter uses discs as the carrier for impurity removal. It is composed of a stack of plastic discs with grooves in different directions on both sides. The edges of the grooves on adjacent surfaces form numerous intersection points, creating many cavities and irregular passages that narrow continuously from the outside in. During filtration, these passages cause turbulence in the water, ultimately trapping impurities at the intersection points. When the discs are stacked on the filter element skeleton, spring and inlet water pressure form a filtration unit that is loose on the outside and tight on the inside. The discs in each filtration unit, compressed by springs and water pressure, form a fine mesh that impurity particles cannot pass through. The disc width is 12 - 18 mm, and the disc material is high-quality engineering plastic with extremely high wear resistance.

pall filter features

Thorough and efficient backwashing is achieved because the filter pores are fully opened during backwashing, combined with a centrifugal jet action, delivering cleaning results unattainable by other filters. The backwash process for each filter unit takes only 10 to 24 seconds to complete. Fully automatic operation; continuous water output and differential pressure control initiate backwashing. Within the filter system, backwashing is performed sequentially across individual filter units and workstations. Automatic switching between operating and backwashing states ensures continuous water output, low system pressure loss, and consistent filtration and backwashing performance over time. Modular design allows users to select the number of parallel filter units as needed, offering flexibility and high interchangeability. It makes flexible use of corner spaces on-site, enabling installation adapted to local conditions with a small footprint. Simple maintenance requires almost no daily upkeep; inspections do not require special tools, and there are very few detachable components.

pall filter test

When the filter membrane and element are completely wetted with a specific solution, pressure is applied from one side via a gas source (our instrument includes an intake control system to stabilize pressure and regulate intake). As pressure increases, gas is released from one side of the filter membrane, appearing as bubbles of varying sizes and quantities on that side. The corresponding pressure value identified by the instrument is the bubble point. Diffusive flow test principle: The diffusive flow test refers to the state when the gas pressure is at 84% of the filter element's bubble point value. At this stage, significant gas perforation has not yet occurred; instead, a small amount of gas first dissolves into the liquid-phase membrane and then diffuses from this liquid phase to the gas phase on the other side. This portion of gas is called the diffusive flow. Measuring the diffusive flow value provides a quantitative measure that not only accurately determines the integrity of the filter but also reflects issues related to membrane porosity, flow rate, and effective filtration area. This is why manufacturers abroad use the diffusive flow method to test integrity.

Weidou Intelligent Technology specializes in selling German pall filters, pall filter screens, pall filter elements, pall filtration systems, pall oil filters, pall water purification filters, pall filtration machines, pall filtration equipment, pall filter tubes, pall vacuum filters, pall filter controllers, pall filter valves, pall automatic filters, pall filter ball valves, pall water strainers, pall original German imports. Welcome customers to inquire and order.