20" Jumbo 0.5 Micron Carbon Block Water Filter Cartridge

Get high-performance drinking-water filtration with a 20" Jumbo 0.5 micron carbon block water filter cartridge designed to combine very fine sediment filtration, activated carbon treatment and cyst reduction in one high-capacity cartridge.

The Davey Microlene BPAC20J uses high-surface-area bonded powdered activated carbon to reduce chlorine, taste, odour, low levels of organic chemicals and THMs, while providing fine particulate filtration and documented cyst removal.

With a 0.5 micron nominal / 1 micron absolute rating, 25 L/min maximum flow, 15 L/min optimal treatment flow, 560,000 litre treatment capacity and >99.9% cyst removal, the BPAC20J is a strong choice for final-stage drinking-water treatment where filtration performance and capacity are priorities.

Product Overview

Davey Microlene BPAC20J

The Davey Microlene BPAC20J is a high-performance carbon block cartridge designed for drinking-water treatment and final-stage filtration.

Its bonded powdered activated carbon media combines several treatment functions in one cartridge:

• Fine sediment polishing
• Chlorine reduction
• Taste and odour improvement
• Reduction of low levels of organic chemicals
• THM reduction
• Giardia cyst removal
• Cryptosporidium cyst removal

The BPAC range provides >99.9% cyst removal and complies with AS/NZS 4348 for cyst reduction.

Why Choose This Water Filter Cartridge?

• 0.5 micron nominal filtration — provides very fine sediment polishing.
• 1 micron absolute rating — provides strong fine-particle retention.
• >99.9% cyst removal — effectively removes Giardia and Cryptosporidium cysts from drinking water.
• Activated carbon treatment — reduces chlorine, taste and odour.
• Organic chemical reduction — highly effective at reducing low levels of organic chemicals and THMs.
• 560,000 litre treatment capacity — provides substantial capacity for higher-use filtration systems.
• 25 L/min maximum flow — supports higher water demand through the cartridge.
• 15 L/min optimal treatment flow — provides effective contact time between the water and activated carbon.
• 20" Jumbo format — provides greater media capacity for larger or higher-use systems.
• High-surface-area bonded carbon — provides strong adsorption and final-stage polishing performance.

How It Works

Water passes through the bonded powdered activated carbon media, where several treatment processes occur together.

The fine 0.5 micron nominal structure captures suspended particles, while the activated carbon reduces chlorine, taste, odour, THMs and low levels of organic chemicals.

The cartridge also acts as a cyst-reduction stage, effectively removing Giardia and Cryptosporidium cysts with documented >99.9% cyst removal.

The BPAC20J can handle a maximum flow of 25 L/min, while 15 L/min is the optimal treatment flow. Operating around the optimal rate provides more contact time between the water and activated carbon.

Best Suited For

The 20" Jumbo 0.5 micron carbon block water filter cartridge is well suited to:

• Drinking water filtration
• Final-stage filtration
• Fine sediment polishing
• Chlorine reduction
• Taste and odour improvement
• Giardia cyst removal
• Cryptosporidium cyst removal
• Larger residential filtration systems
• Beverage industry applications
• Mineral-water bottling
• Laboratory use
• Food-industry water treatment
• Commercial drinking-water applications
• Applications requiring reduction of dissolved chemicals

Davey specifically lists the BPAC range for drinking water, beverage industry, mineral-water bottling, laboratory use, food industry, final filtration and other applications where low contamination levels and removal of dissolved chemicals are required.

Key Specifications

What Makes the BPAC20J Different?

The BPAC20J provides much finer filtration and more specialised treatment than a standard 5 micron carbon block cartridge.

Its 0.5 micron nominal / 1 micron absolute rating makes it an excellent final polishing filter, while its bonded activated carbon reduces chlorine, taste, odour, organic chemicals and THMs.

The standout features are its >99.9% cyst-removal performance and substantial 560,000 litre treatment capacity.

This combination makes the BPAC20J particularly useful where you want fine filtration, carbon treatment and cyst reduction from a single 20" Jumbo cartridge.

Understanding Maximum vs Optimal Flow

The BPAC20J has two useful flow figures:

Maximum flow: 25 L/min

This is the maximum flow rate of the cartridge.

Optimal treatment flow: 15 L/min

The Davey datasheet specifies 15 L/min as the optimal flow rate for the 20" Jumbo BPAC cartridge.

For applications where carbon-treatment performance is the priority, operating around the optimal rate provides greater contact time between the water and activated carbon.

Treatment Capacity

One of the major advantages of the BPAC20J is its 560,000 litre treatment capacity.

The larger 20" Jumbo cartridge contains substantially more treatment media than the 10" Jumbo BPAC10J, making it particularly useful for higher-use water systems.

Cartridge life will still depend on incoming water quality and sediment loading.

Installation

This cartridge is designed for use in a compatible 20" Jumbo water filter housing.

To replace the cartridge:

1. Turn off the water supply.
2. Release pressure from the filter housing.
3. Remove the housing sump.
4. Remove the existing cartridge.
5. Clean the housing if required.
6. Check that the O-ring is clean and seated correctly.
7. Insert the BPAC20J cartridge.
8. Reassemble the housing.
9. Slowly restore water pressure.
10. Check the housing for leaks.

Davey recommends using a sediment-removal prefilter where required to prevent premature clogging of the carbon's active sites.

Maintenance

The BPAC20J has a recommended 6-month hygienic lifespan.

Actual cartridge life depends to some extent on feedwater quality. Water with higher sediment levels can clog the carbon media sooner, which is why a sediment prefilter is recommended where required.

Replace the cartridge at the recommended hygienic interval or sooner if filtration performance noticeably reduces.

Flushing After Installation

The BPAC20J should be flushed before the water is used for drinking.

Davey recommends running water through the cartridge for at least 5 minutes after installation to remove carbon fines.

The cartridge should also be flushed for 20 seconds before using the water for drinking.

What's Included

1 × Davey Microlene BPAC20J 20" Jumbo 0.5 Micron Carbon Block Water Filter Cartridge

Frequently Asked Questions

What does 0.5 micron mean?

The BPAC20J has a 0.5 micron nominal sediment-removal rating, making it an excellent fine polishing cartridge.

It also has a 1 micron absolute rating.

Does this filter remove Giardia and Cryptosporidium?

Yes. The BPAC range effectively removes Giardia and Cryptosporidium cysts from drinking water and complies with AS/NZS 4348, providing >99.9% cyst removal.

Does it reduce chlorine taste and smell?

Yes. The bonded activated carbon is designed to reduce chlorine, taste and odour, helping improve drinking-water quality.

Does it reduce chemicals?

Yes. The high-surface-area bonded activated carbon is highly effective at reducing low levels of organic chemicals and THMs.

What is the maximum flow rate?

The BPAC20J has a maximum flow rate of 25 L/min.

What is the optimal treatment flow?

The BPAC20J has an optimal treatment flow of 15 L/min.

Why is optimal flow lower than maximum flow?

The maximum flow tells you how much water can flow through the cartridge, while the optimal treatment flow is the rate to target for stronger carbon-treatment performance.

Activated carbon benefits from contact time, so a lower flow gives the water more time in contact with the carbon media.

What is the treatment capacity?

The BPAC20J has a documented treatment capacity of 560,000 litres.

How often should I replace it?

Davey specifies a 6-month hygienic lifespan for the BPAC range.

Cartridge life can also vary depending on feedwater quality.

Should I use a sediment prefilter?

For water with higher sediment loading, yes.

Davey recommends a sediment-removal prefilter to help prevent premature clogging of the carbon's active sites.

Can it be used with hot water?

The BPAC range is suitable for cold or hot-water service, with a maximum temperature specification of 82°C.

Do I need to flush the cartridge after installation?

Yes. Run the cartridge for at least 5 minutes after installation to remove carbon fines.

Davey also specifies flushing for 20 seconds before using the water for drinking.

Why choose the 20" Jumbo instead of the 10" Jumbo?

The 20" Jumbo provides substantially greater treatment capacity.

The BPAC20J is rated at 560,000 litres, compared with 190,000 litres for the BPAC10J. The 20" Jumbo also has a higher optimal flow rate of 15 L/min, compared with 7.6 L/min for the 10" Jumbo model.

This makes the 20" version better suited to higher-use filtration systems.

Will this fit a 20" Jumbo housing?

Yes. The BPAC20J is the 20" Jumbo model and is intended for a compatible 20" Jumbo cartridge housing.