Large-diameter filter range – Carbon large-diameter filters
- Application-specific range
- 52°C – 83°C
In general, large-diameter carbon cartridges give approximately four times the capacity of the standard size at double the flow rate. Available in the same extensive configuration as the standard for varying applications and offering the advantages of longer life and higher flow at a greater efficiency.
All large-diameter carbon cartridges are 10″ and 20″ lengths and are most economically used in the Big Blue range of plastic filter housings. For increased flow rates, the multi-cartridge AXR housings can be used with cartridge couplers; the largest housing accepting 5 x 40″ lengths.
Carbon capacity information
Chlorine reduction is based on a feed of 2 ppm and a reduction to a maximum of 0.5 ppm. Once a chlorine breakthrough is recorded at 0.5 ppm, the carbon will still have some capacity.
Note: This is the standard and widely used NSF std 42 test parameter for carbon cartridges. However, ‘real-world’ feed levels are likely to be much lower and often 0.1ppm is the required filtrate quality . Therefore, a reasonably accurate method for calculating the life for individual applications is to multiply the above chlorine reduction capacity by 1.5 (i.e the difference between 2ppm and 0.5ppm) and then divide this figure by the ppm of chlorine in the feedwater. This will give the litres life. Example; EPM-BB = 41,600 x 1.5 = 62,400 divided by (say) 0.5ppm = 124,800 litres capacity.
Note: Flow has a dramatic effect on capacity. Increasing the flow will shorten the life expectancy and, vice-versa, decreasing the flow will increase the cartridge life.