Pall HFU660UY200H4W 5-Micron High-Flow Prefilter Cartridge (6″x40″), Polypropylene Pleated Media with Wetted & Low Extractable Design for USP Purified Water Systems

Product Introduction

The HFU660UY200H4W is a high-flow, pleated filter cartridge designed for industrial water pretreatment, serving as a protective “guard filter” in large-scale systems. It is commonly used to replace Pall’s original equipment. The model name decodes as follows: HFU (High Flow Unit), 660 (6-inch diameter, 60-inch length), UY (pleat geometry), 200 (likely related to the filtration area or media type), H4 (filtration rating), and W (a variant suffix, often indicating a specific material or feature).

Filtration Precision

The “H4” suffix in the model code specifically indicates its filtration rating. For this product series, “H4” denotes a 5-micron filtration precision. It is designed to effectively capture fine particulate matter.

Flux

This cartridge is engineered for very high flow rates. For the 60-inch (1524mm) length, the maximum flow capacity is up to 204 gallons per minute per pressure differential (gpm/psid), equivalent to approximately 772 liters per minute at 70 millibars. Another common specification cites a maximum recommended flow rate of 1300 liters per minute (LPM).

Salt Rejection Rate

Not Applicable. This is a critical distinction. The HFU660UY200H4W is a mechanical, depth filter cartridge. Its function is solely the physical removal of suspended particles (like sediment and silt) based on size exclusion. It does not remove dissolved salts or ions. This function is specific to membrane processes like Reverse Osmosis (RO) or Nanofiltration (NF).

Pressure Drop

The hydraulic performance is characterized by a very low initial pressure drop, typically around 0.02 MPa for a clean cartridge. The cartridge is considered loaded and should be replaced when the differential pressure across it reaches 2.4 Bar. The maximum allowable pressure drop is 3.5 Bar.

Molecular Weight Cutoff (MWCO)

Not Applicable. MWCO (e.g., 1-500 kDa) is a key parameter for molecular separation processes like Ultrafiltration (UF) and Nanofiltration (NF). This pleated cartridge operates purely on mechanical particle size exclusion (micron rating) and has no defined MWCO.

Membrane Thickness

This product is not a membrane element. It uses a pleated depth filter media, typically made from polypropylene (PP). The filtration occurs throughout the entire thickness of this pleated media bed. The concept of a thin, selective “membrane” layer (which can be just a few microns thick, as in composite membranes) does not apply here.

Replacement Cycle

The service life is condition-based, not time-based. The primary indicator for replacement is when the system’s differential pressure reaches the 2.4 Bar set point. The actual cycle depends entirely on the inlet water quality and system operating hours.

Features

• High Dirt Holding Capacity: The unique crescent or geometric pleat design provides a large filtration area, maximizing contaminant loading and extending service life.

• High Flow with Low Pressure Drop: The large 6-inch diameter and optimized pleat design enable high throughput with minimal flow resistance.

• Cost-Effective Operation: High single-cartridge flow reduces the number of housings needed, and long service life lowers change-out frequency and labor costs.

• Material and Construction: Features all-polypropylene construction (media, support, end caps) for broad chemical compatibility. Filtered contaminants are trapped inside the cartridge, preventing secondary release during handling.

• Cage-Less Design: The “UY” series often indicates a construction without an internal metal support cage.

Application Fields

This filter is a versatile pre-filter in numerous industrial sectors:

• Reverse Osmosis (RO) Protection: As a critical “guard filter” to protect RO membranes from particulate fouling.

• Power Industry: Condensate water filtration in power plants.

• Desalination: Pretreatment for seawater desalination systems.

• Pharmaceutical & Biotech: Filtration of process water, solvents, and raw materials.

• Food & Beverage: Filtration of products like bottled water, juices, and dairy.

• General Industry: Pre-treatment in petrochemical, paint, and microelectronics manufacturing.

Conclusion

The HFU660UY200H4W is a high-performance, large-flow depth filter cartridge designed for reliability in demanding industrial water pretreatment. Its 5-micron precision, exceptional dirt-holding capacity, and high-flow design make it an efficient and cost-effective solution for protecting sensitive downstream equipment, thereby ensuring system stability and reducing overall operating costs.

Related Products

• Different Precision Ratings: Models with suffixes like HFU660UY200H1 (1-micron) or HFU660UY200J (often 2 or 3-micron) offer varying levels of filtration.

• Other Lengths in the H4 Series: HFU620UY200H4W (20-inch) and HFU640UY200H4W (40-inch) for systems with different space or flow requirements.

• Different Media Types: The HFU660GF... series, which likely uses Glass Fiber media for different adsorption characteristics.

• Non-“W” Variants: The standard HFU660UY200H4 model, where the “W” suffix may indicate a specific material grade or feature (e.g., higher temperature rating or different gasket material).