Express Water standard reverse-osmosis replacement supply set

Systems listed in our guide

FLTSETS6C6G6I3M502 is associated with the following Express Water systems in our research. Open the model page to see every replacement associated with that system, then confirm with the manufacturer.

Filters and stages included

This listing covers the following components. Confirm the quantity, stage order, and part labels shown in the current manufacturer listing before ordering.

• Sediment pre-filters
• Granular activated-carbon filters
• Carbon-block filters
• 50-GPD RO membrane
• Inline post-carbon filters

A complete kit does not mean every stage is due at the same time. Use the system manual’s schedule for each component.

Replacement schedule for FLTSETS6C6G6I3M502

Multi-year staged set; replace each filter and membrane on its specified schedule. Treat this only as general product guidance and follow the system manual. Water quality, usage, pressure, and sediment can change actual filter life.

Reverse-osmosis stages often expire on different schedules. Replacing this item does not necessarily mean the membrane, pre-filters, and post-filter are all due at the same time.

How to avoid ordering the wrong filter

• Confirm the system label includes the complete model, including every dash and suffix.
• Compare the installed part number with FLTSETS6C6G6I3M502.
• Confirm the stage, membrane capacity, and connection style.
• Do not rely on cartridge color, dimensions, or product photography alone.

This set is intended for standard Express Water 50-GPD RO systems. Confirm the membrane capacity, stage count and absence of alkaline or UV stages before ordering.

After installing the replacement

Follow the system manual, restore the water supply slowly, inspect every connection for leaks, and flush the new filter using the manufacturer’s specified volume before drinking the water.

If flow remains low, water tastes unusual, or a leak appears, shut off the supply and recheck the cartridge alignment, seals, tubing, and complete part number. Seek qualified help when needed.

How this entry was researched

We used the named manufacturer’s replacement information as the primary compatibility reference. Retailer descriptions are a purchasing aid, not our source of truth, and this research does not guarantee fit.