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20 inch Big Blue CTO Carbon Filter
₺2,895.68
VAT included · In stock · Free shipping
Installation is a service · plumbing is the customer’s responsibility
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Across Türkiye
Fast Delivery
Across Türkiye · 1–3 business days
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0850 304 95 25
- SKU
- WP-SF-034
- Category
- Water Filters, Water Treatment Spare Parts
Big Blue · Long Carbon Block
The Highest-Capacity Chlorine Reduction with the 20 inch Big Blue CTO Carbon Filter
The 20 inch Big Blue CTO Carbon Filter is a large-diameter, long-bodied treatment cartridge made by compressing activated carbon into a solid block. It adsorbs chlorine, odour, off-taste and organic compounds from the water and works with long contact time on high-flow main lines.
- Size
- 20" Big Blue
- Construction
- Compressed Carbon Block
- Function
- Chlorine · Taste · Odour
01Problem & Solution
On Busy Lines the Carbon Saturates Early
Problem
Frequent Replacement, Returning Odour
Water use on building and estate lines is high. Small carbon cartridges saturate quickly; the smell of chlorine returns before long, and frequent replacement adds to the operating burden.
Solution
Large Diameter, Long Body
With its large diameter and long body, the 20 inch Big Blue CTO Carbon Filter offers the highest carbon volume. Contact time lengthens, chlorine reduction stays effective and the replacement interval widens.
02Key Features
Maximum Carbon, Easy Flow
The 20 inch Big Blue CTO Carbon Filter is the highest-capacity carbon cartridge for main-line filtration.
Chlorine Reduction
By adsorbing free chlorine from mains water, it improves the taste and smell of the water.
Large Diameter & Long Body
The Big Blue diameter and the 20 inch length together give the highest carbon volume.
Long Contact Time
Because the water stays inside the block longer, removal efficiency holds up even at high flow.
Organic Compound Adsorption
Helps capture the organic compounds that give water colour, taste and odour.
Covers the Whole House
Working on the main line, it reduces chlorine smell in the bathroom, the kitchen and at every point of use.
Big Blue Housing Compatibility
Compatible with common 20 inch Big Blue filter housings; it can be used regardless of brand.
03Technical Specifications
Product Details
| Feature | Value | What it does |
|---|---|---|
| Product Type | Carbon Block (CTO) Filter | Which family the unit belongs to. Products in the same family can be used in place of one another. |
| Size | 20 inch Big Blue | The physical size. If a spare does not match this, it will not go into the housing. |
| Construction | Compressed Activated Carbon | How the unit is put together. A compact cabinet takes little room; an open system makes servicing easier. |
| Function | Chlorine, Taste and Odour Reduction | What the product does to the water. |
| Stage | Carbon After Sediment | The number of treatment stages. Each stage takes out a different kind of contamination. |
| Compatibility | 20" Big Blue Filter Housings | Which units and housings it works with. Compare it with yours before ordering. |
04Applications
Where Is It Used?
The 20 inch Big Blue CTO Carbon Filter is used on main lines with high water use.
- Building & Estate Inlets
- Villas & Detached Houses
- Hotels & Accommodation
- Well & Borehole Water Lines
- Business & Workshop Lines
- RO System Pre-Treatment
- Annual Filter Replacement
- Service & Installation Engineers
05How It Works
How Does the 20 inch Big Blue CTO Carbon Filter Work?
It Comes After the Sediment Stage
Water that has passed the sediment filter on the main line reaches the carbon free of coarse particles.
It Passes Through the Long Block Body
Water travels from the outer surface of the large-diameter, 20 inch long carbon block towards the centre.
Adsorption Takes Place
Chlorine, odour and organic molecules attach to the porous carbon surface and leave the water.
Clear Water Goes Out to the Line
Free of chlorine, the water is delivered to the plumbing and reaches any further treatment stages protected.
Replaced When Saturated
When the carbon surface is saturated, chlorine reduction weakens and a change in taste and smell becomes noticeable.
06Making the Right Choice
20 inch or 10 inch Big Blue?
When choosing the 20 inch Big Blue CTO Carbon Filter, consider the housing size, the flow rate and the chlorine level.
Housing Size
This cartridge is for 20 inch Big Blue housings; a 10 inch Big Blue housing takes a shorter cartridge.
Flow Requirement
On building and estate lines with high water use, the 20 inch size gives longer contact time.
Chlorine Level
On mains supplies with a high chlorine level, a larger carbon volume extends the replacement interval.
Installation Space
A 20 inch Big Blue housing is longer; leave enough clearance beneath it for cartridge changes.
07Maintenance and Use
Replacement Notes
Replaced on time, the 20 inch Big Blue CTO Carbon Filter keeps protecting the whole line.
- This cartridge is not washable; once the carbon surface is saturated it must be replaced with a new one.
- When the smell of chlorine becomes noticeable at the taps again, it is time to replace it.
- Before replacement, close the main valve, release the pressure in the housing and check the large O-ring.
- After fitting the new cartridge, run the line for a few minutes to rinse out carbon dust.
08Frequently Asked Questions
Common Questions
What does the 20 inch Big Blue CTO Carbon Filter do?
It removes chlorine, odour, off-taste and organic compounds from the water by adsorption. Its large diameter and long body let it work effectively on high-flow main lines while protecting the treatment stages.
How does it differ from a 10 inch Big Blue cartridge?
The diameter is the same, the length differs. Being twice as long, the 20 inch cartridge contains more carbon; water stays inside the block longer and the replacement interval lengthens markedly.
Will it fit a standard 20 inch housing?
No. Big Blue cartridges fit Big Blue housings only. If you have a standard slim 20 inch housing, choose a cartridge made for that diameter.
How does it differ from a GAC carbon filter?
GAC consists of a granular carbon fill; CTO is a pressed block. The block structure gives longer contact time and less carbon carry-over, while the granular structure restricts flow less.
Does it remove limescale and sediment?
No. Carbon works by adsorption; it does not reduce hardness and does not remove dissolved salts. A sediment filter is needed for sand and silt, and a softening stage for hardness.
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Questions & Answers
Questions asked about this product
Questions on compatibility, capacity and installation are answered by our technical team. The answers stay public — so the next person with the same question can see them too.
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Installation and commissioning
Installation is a service · plumbing is the customer’s responsibilityThe system is delivered ready to install; it only needs to be connected to the inlet and outlet lines. If valve setup is required, we provide free support over a video call. Installation and commissioning fall under our service work and are subject to a service fee. Plumbing labour and any pipes, valves and fittings are not included in the price; these items are the customer’s responsibility.
Warranty
ConsumableThis product is classed as a consumable or spare part; because its life depends on use, it is not covered by warranty. Faulty or incorrectly shipped items are replaced — just get in touch with us.
Withdrawal and returns
Distance sales agreementThe right of withdrawal and the return terms are set out in detail in the distance sales agreement. Systems that have been installed and commissioned, and made-to-order products, are outside its scope.
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