Water Filter Cartridge, 4.5 x 20 Inches, Featuring a 222 Double O-Ring Seal and Pleated Nanofiber Media

This water filter cartridge combines a washable 5-micron outer layer and pleated nano alumina fiber media for mechanical filtration and electro-adhesion. The outer layer can be rinsed when sediment accumulates, making it easier to maintain the cartridge's first filtration layer.

The 4.5 x 20-inch cartridge has a 222 double O-ring seal. Plan pretreatment around your incoming water: iron, sulfur and manganese must be removed upstream, and a 1-micron filter ahead of this cartridge is recommended. Replacement timing depends on water quality rather than a fixed service interval.

Features

• Washable 5-micron outer filter layer allows accumulated sediment to be rinsed away.
• Pleated nano alumina fiber media combines mechanical filtration and electro-adhesion.
• 222 double O-ring seal provides a positive barrier.
• Typical clean pressure drop is less than 3 PSID.

Specifications

• Product: Replacement water filter cartridge
• Dimensions: 4.5 x 20 inches
• Seal configuration: 222 double O-ring
• Outer filtration layer: 5 microns; washable when sediment accumulates
• Inner media: Pleated nano alumina fibers
• Typical clean pressure drop: Less than 3 PSID
• Pretreatment turbidity: Less than 3 NTU
• Pretreatment pH range: 5–9.5
• Pretreatment iron level: Less than 0.3 ppm
• Pretreatment manganese level: Less than 0.05 ppm
• Upstream treatment: Remove iron, sulfur and manganese before this cartridge
• Recommended upstream filtration: 1-micron filter

Frequently Asked Questions

What should I check before buying this replacement cartridge?

Check that your system requires a 4.5 x 20-inch cartridge with a 222 double O-ring seal. Match both the cartridge dimensions and seal configuration before ordering.

Can I wash the entire cartridge instead of replacing it?

Only the 5-micron outer layer is identified as washable when sediment accumulates. Washing that layer does not make the inner pleated media reusable indefinitely.

What pretreatment does this cartridge need?

This cartridge needs iron, sulfur and manganese removed upstream. A 1-micron pre-filter is also recommended; pretreatment guidelines include turbidity below 3 NTU and a pH of 5–9.5.

How often should I replace this cartridge?

Replacement timing for this cartridge depends on incoming water quality and pretreatment. There is no fixed service-life guarantee, so do not plan maintenance solely around a calendar interval.