Product Introduction
The Pall HFU660UY400H is a high-flow, pleated depth filter cartridge engineered for robust industrial water pretreatment. As part of the HFU series, it is designed to consolidate filtration capacity, where a single element can replace multiple standard-sized cartridges, reducing system complexity and operational costs. The model decodes as follows: HFU for High Flow Unit, 660 for 6-inch diameter and 60-inch length, UY for the pleat geometry, and 400 as a series identifier. It functions as a primary guard filter to protect critical downstream processes.
Filtration Precision
The H suffix in the model name indicates a specific filtration grade. In the context of this series and the preceding 400 identifier, the H likely denotes a 1-micron absolute or nominal filtration precision. For mission-critical applications, confirming the exact micron rating with the official manufacturer’s specification is essential.
Flux
This cartridge is designed for high-volume applications. For the 60-inch length, it delivers a very high single-cartridge flow rate, typically up to 204 gallons per minute per pressure differential (gpm/psid), equating to approximately 772 liters per minute at 70 millibars. This high flux reduces the required number of filter vessels and elements for a given system flow.
Salt Rejection Rate
Not Applicable (N/A). This is a mechanical depth filter. It removes suspended particles and sediments but has no capability to reject dissolved salts or ions. Salt removal is the function of downstream membrane processes like Reverse Osmosis (RO).
Pressure Drop
A key feature is efficient flow with minimal resistance.
Initial Pressure Drop: Very low, typically around 0.02 MPa.
Recommended Replacement Pressure Drop: 2.4 Bar. This signals the cartridge is loaded.
Maximum Allowable Pressure Drop: 3.5 Bar.
Molecular Weight Cutoff (MWCO)
Not Applicable (N/A). MWCO is a parameter for molecular-level separation membranes (e.g., Ultrafiltration). This cartridge operates on particle size exclusion in the micron range and has no MWCO.
Membrane Thickness
Not Applicable (N/A). This product does not contain a membrane. It is constructed with a pleated depth filter media, usually polypropylene (PP). Filtration occurs throughout the depth of this thick media bed.
Replacement Cycle
The service life is condition-based. The cartridge must be replaced when the differential pressure across it reaches the 2.4 Bar set point. The actual cycle duration depends entirely on the influent water quality.
Features
High Contaminant Loading: The proprietary pleat design maximizes the filtration surface area and media volume, granting an exceptionally high dirt-holding capacity.
System Consolidation: The high flow rate allows for the design of more compact systems with fewer housings and connections, lowering capital and maintenance costs.
All-Polypropylene Construction: The media, support, and end caps are typically polypropylene, thermally bonded to prevent media migration and ensure a sanitary, adhesive-free fluid path.
Broad Chemical Compatibility: Polypropylene media is resistant to a wide range of chemicals within specified pH and temperature limits.
Application Fields
This filter is used as a pre-filter across heavy industries:
RO/NF Membrane Protection: Critical pre-filtration to prevent particulate fouling of reverse osmosis and nanofiltration membranes.
Power Plant Water Systems: Filtration of condensate and feedwater.
Desalination Pretreatment: Protecting seawater reverse osmosis (SWRO) systems.
Pharmaceutical Water: Pretreatment for Purified Water and WFI generation systems.
Microelectronics: Pre-filtration in ultrapure water (UPW) production loops.
General Industrial Processes: Pre-treatment of water for chemical manufacturing, food & beverage, and metal finishing.
Conclusion
The Pall HFU660UY400H is a high-capacity, high-flow depth filter cartridge that offers reliable and cost-effective particulate removal. Its design focuses on maximizing service life and system efficiency, making it a cornerstone component for protecting sensitive downstream equipment and ensuring stable operation in demanding industrial water treatment plants.
Related Products
Other Precision Grades: Models like
HFU660UY200H1(1µm),HFU660UY200H4(5µm), orHFU660UY200J(2-3µm) for different target particle sizes.Shorter Length Variants:
HFU620UY400H(20-inch) andHFU640UY400H(40-inch) for systems with space constraints.Alternative Media: The
HFU660GF...series, which employs glass fiber media for applications requiring different adsorption properties.Competitive Equivalents: Performance-matched replacement cartridges from other manufacturers designed to the same form and function.
