Berkey BK4X2-BB Water Filtration System
- Capacity: 2.1 gallons
- Purification Method: Activated Carbon
- Installation Type: Countertop
- Power Source: Gravity-Fed
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A stainless steel gravity system with an 8 liter capacity, built for counters where power and plumbing aren't an option.
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ASIN: B0CBVMTYMGModel: BK4X2-BBCategory: Water Filtration Systems
Overview
The Berkey BK4X2-BB is a stainless steel countertop gravity filtration system with an 8 liter capacity, using activated carbon filtration and standing 19.25 inches tall.
Gravity-fed systems like this filter water through carbon elements without power or plumbing, pouring water into the top chamber and letting it filter down. The 8 liter capacity and stainless build put it in the larger, more durable end of countertop filters in this batch.
- Activated carbon gravity filtration
- 8 liter capacity
- Stainless steel construction
- 8.5 x 8.5 x 19.25 inch footprint
Who it's for
Households or off-grid users wanting a filter that works without electricity or plumbing hookups. Not the choice for anyone tight on counter space, given its 19.25 inch height.
Pros and cons
- Works without electricity or plumbing
- Stainless steel build with 8 liter capacity
- Stands 19.25 inches tall, needing tall counter clearance
- Requires manual refilling rather than a continuous feed
Performance notes
Gravity filtration relies on the height of the two-chamber design to push water through carbon elements by weight alone, rather than water pressure or electricity. That makes it usable anywhere you can pour water in, including off-grid, but it also means refilling by hand rather than a continuous tap feed.
Specifications
| Brand | Berkey |
|---|---|
| Model | BK4X2-BB |
| Dimensions & fit | |
| Item Dimensions L X W X H | 8.5 × 8.5 × 19.2 inches |
| Capacity & performance | |
| Capacity | 2.1 gallonslower than 76% of 46 water filtration systems |
| Filter Life Cycle | 7 years |
| Power & efficiency | |
| Power Source | Gravity-Fed |
| Construction & materials | |
| Material Type | Stainless Steel |
| Compatibility & installation | |
| Installation Type | Countertop |
| Included components | |
| Included Components | System, 2 Black Berkey Elements, Standard Spigot |
| Other details | |
| Purification Method | Activated Carbon |
| Container Type | Bottle |
| Number Of Items | 1 |
| Other Special Features Of The Product | Chlorine Reduction |
| Part Number | BK4X2-BB |
Closest rivals on specs
Apec Water ROCT-C1 Water Filtration System- Capacity 2.1 vs 1.3 gallons (+62%)
Culligan MCV701P Water Filtration System- Capacity 2.1 vs 3 gallons (-30%)
Frequently asked questions
Does the Berkey BK4X2-BB need to be plugged in or plumbed?
No, it's a gravity-fed countertop system that needs neither power nor plumbing.
What is the BK4X2-BB made of?
Stainless steel.
How much water does the BK4X2-BB hold?
8 liters.