Whole House Carbon Filter "25-TF-10”

Technical Details:
Large, and thus powerful enough to significantly reduce not just chlorine, but also chloramines (which municipalities increasingly use for disinfecting), as well as other breathable pollutants, such as gases (radon), solvents, petroleum products, etc. Exposure to these pollutants, which evaporate into the surrounding air upon contact, is much higher via inhalation than by drinking the water, so that it becomes important to filter not just the water at the kitchen faucet, but throughout the whole house. Its features explained:

• 1.5 cubic feet (>40lbs.) of high quality, 12x40 mesh carbon: With this quantity of carbon and a typical flow rate of, say 5gpm (gallons per minute), the water takes more than two minutes to flow through the carbon bed. This amount of “contact time” is necessary for any reliable, high percentage reduction in chemicals, especially those that are highly soluble in water.

• The carbon granules are as small as practical (12x40 mesh) in order to maximize available surface area and easy access to their pore structure. With carbon granules below this size the bed gets so dense that pressure drop easily becomes prohibitive.

• Carbon is produced from many different sources and displays different characteristics – some more desirable than others. “Our” carbon is made from bituminous coal. It has pores of multiple sizes and thus good all-around removal capacities for a wide range of chemicals. Also, this carbon is very “hard”, i.e. resistant to physical degradation, which is important for carbon that will be backwashed frequently (abrasion!).

• Fully automatic Fleckenstein control valve, one of the most renowned names in the industry: With use, the carbon bed gradually compacts and it also traps particles. Its resistance to flow increases and chances grow that “channeling” occurs, whereby the water – following the path of least resistance – finds or creates itself a channel through the carbon bed and thus avoids the necessary contact with the “adsorptive” surfaces. To prevent channeling, remove trapped particles, and minimize resistance to flow (pressure drop), the carbon bed is regularly backwashed. This backwash happens automatically (usually at 2:00 a.m. when the filter is not in use) and is handled by your Fleckenstein control valve.

• Fleckenstein control valve model 2510 offers the largest passage ways of any control valve in their residential line-up and thus minimizes pressure drop: Every filter introduces some resistance to flow, however, this pressure drop can ideally be kept imperceptibly small. The most resistance is not contributed by the filter bed / media, but by the control valve, as the water passes through its various internal channels. Therefore, maximizing these channels has the biggest impact (reduction) on pressure drop.

• External (brass) bypass valve allows removal of the unit for service without interrupting the water supply to the house: An external (meaning outside the filter) bypass is definitely a must, so that you won’t be without water in the house if there is a problem with the filter, or even just while it is serviced. Sometimes the installer / plumber will fashion a bypass by plumbing a pipe loop with valves – an additional expense you won’t need to incur.

• 5/10-year warranty: Your whole house carbon filter comes with a 5-year warranty (parts and labor) on the control valve and a 10-year warranty (parts and labor) on the tank. If Service Agreement is purchased, all warranties are extended to lifetime (parts and labor).

Use your system ONLY on potable water supplies and within the following parameters:

Turbidity: less than 5 NTU (Nephelometric Turbidity Units)
Water Temp: 33o F - 120o F

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