Product Name: Water Filter Cartridge, 3.00 Micron, 20 Inch (Part Nos. 204814 / 202466)

Description:
This component is a high-capacity water filter cartridge with a nominal filtration rating of 3.00 microns and a standard nominal length of 20 inches. It is typically manufactured from high-quality polypropylene (PP) using a melt-blown or spun-bonded process, creating a dense, gradient-density fiber matrix. This "depth filtration" design allows the cartridge to capture and retain particulate contaminants throughout its entire thickness, offering high dirt-holding capacity, low pressure drop, and a long operational life.

The 3.0-micron rating makes this cartridge suitable as a primary or secondary sediment filter in the water pre-treatment system for high-pressure waterjet cutting machines. It is installed in a compatible 20-inch filter housing on the low-pressure water supply line before the water reaches the intensifier pump. Its primary function is to remove suspended solids—such as fine sand, rust particles, silt, and other insoluble sediments—ensuring a high level of water purity. This filtration stage is crucial for protecting sensitive and expensive components, including high-pressure seals, check valves, and the ultra-precision diamond or sapphire cutting orifice, from premature wear and clogging.

These part numbers (204814, 202466) are OEM replacements for filter cartridges used in major waterjet systems and are cross-referenced with industry-standard specifications. The actual outer diameter of the 20-inch cartridge is typically 2.5 to 2.68 inches.

Applications:

• Primary sediment filtration in the water pre-treatment system for ultra-high pressure waterjet cutting machines

• Secondary filtration stage following coarser filters (e.g., 5-10 micron) to provide polished water for critical pump and cutting head components

• Protects the intensifier pump, high-pressure seals, and the cutting head's jewel orifice from abrasive wear caused by particulate matter

• Installed in compatible 20-inch (nominal) standard filter housings

Features:

• Filtration Rating: 3.0-micron nominal rating effectively removes fine particles

• Filtration Technology: Depth filter design using thermally bonded microfibers of polypropylene for high particle retention and dirt-holding capacity

• High Capacity: The larger 20-inch length and 3.0-micron rating provide significantly higher dirt-holding capacity and service life compared to shorter or finer filter cartridges

• Material Construction: Pure polypropylene (PP) media provides broad chemical compatibility, low extractables, and resistance to bacterial growth

• Dimensions: Standard 20-inch length, approximately 2.5 to 2.68 inches outer diameter for fitting standard industrial housings

• OEM Compatibility: Direct replacement for OMAX (204814, 202466), KMT, FLOW, and other major waterjet systems

Maintenance:

When to Replace (Failure Diagnosis):

• Scheduled Preventive Maintenance: Replace the cartridge on a regular schedule based on operating hours and water quality, typically every 500-1,000 hours or every 3-6 months. Following a strict schedule is more reliable than visual inspection

• Reduced Flow / Pressure Drop: A significant drop in system water flow or low-pressure water supply pressure indicates a clogged filter element

• Premature Component Wear: If jewel orifices, seals, or check valves require replacement more frequently than normal, the filter may be ineffective or past its service life

• Visual Inspection: If the cartridge appears discolored (brown/black), coated with sediment, or physically deformed during a housing check

Replacement Guidelines:

• Full Depressurization (Critical): Before any maintenance, fully depressurize the waterjet system, shut off the water supply, and follow lockout/tagout procedures

• Disposable Component: This is a single-use component. Do not attempt to clean or reuse it, as this will damage the depth filtration matrix and will not remove embedded contaminants

• Housing Inspection: Before installing a new cartridge, clean the inside of the filter housing. Inspect the housing O-ring or seal for damage or debris. Replace the O-ring if necessary

• Proper Seating: Ensure the new cartridge is correctly seated on the housing's internal standpipe to prevent water bypass, which would allow unfiltered water to reach sensitive components

• Record Keeping: Keep maintenance logs recording filter change dates and operating hours to establish an optimal replacement schedule for your specific water quality