Water filters and housings/ Sediment removal
Filtration systems are effective ways of removing sediment and physical contaminants from your water supply. Our most common application for filtration is to remove sediment from the water to provide a clear sample of water for your ultraviolet unit to treat.
- We supply and install a large variety of water filters and filter housings
- All our stock filters and housings are WRAS approved for use with potable water systems
- The filter cartridge is placed inside a filter housing through which the water passes
- We will help you select a suitable type and size of filter to meet your requirements
- FWT only install quality filter housings such as Pentek, Pentek plastic filter housings, they are WRAS approved for use with potable water and all Pentek plastic filter housings carry a 5-year warranty (clear bowls, 1 year), conditional on the proper use of the housing
The filter type and size is dependent on the required flow rate and quantity of sediment in the water, filters are generally sized in 10” increments and come in 2 different diameters a ‘standard’ 2.5” diameter and ‘big blue’ 4.5” diameter for a larger surface area. As a rule of thumb FWT recommend approximately 10” of filtration for every 15 L/min of flow.
Types of filters and sediment removal
Spun filter cartridge
The spun range resemble long reels of compressed candy floss and are a cost effective way of removing fine sediment from the water. Our filters offer WRAS approval, consistent true depth filtration, high dirt holding capacity and low cost. These cartridges are made of a pure polypropylene construction using FDA approved materials, which meet NSF standard 42 with the manufacturing process being ISO 9001 certified and comply with regulation 31 and are available in micron ratings of 1- 100. FWT generally install at least a 5 micron spun filter prior to an ultraviolet treatment unit to ensure a clear sample of water for the UV light to penetrate, available in standard and big blue diameters.
Pleated filter cartridge
The pleated range offer longer life, finer filtration and purity. Constructed of all-polypropylene materials encased in a ridged outer. Pleated filters are available in a range of efficiencies up to 100% efficient and micron ratings 0.003 – 100. Filters are generally not able to control bacteria in water but can remove cysts, such as Crytosporidium. They are more efficient that their spun counterparts and rather than a reel of compressed candyfloss its best to think of a pleated filter as a very fine strainer. Pleated filters are generally more expensive that spun filters and are available in standard and big blue diameters.
Activated carbon filters
Activated carbon filters are effective in the removal of tastes and odours from water and for the reduction of chlorine. They also have the ability to reduce many organic compounds. Specially prepared activated carbon is selected for its efficient filtration capabilities from a variety of material sources. A large surface of available filtration area is achieved by the creation of many fine pores and channels in each of the carbon granules, carbon filters are usually used in conjunction with a standard spun sediment filters, so the spun takes out the majority of the contaminants and the carbon filter ‘polishes’ the water. Carbon filters are available for both standard and big blue filter housings
Micro Z sediment treatment unit
If you need to remove large volumes of sediment, standard filter systems may not be the most efficient method. The Micro Z back washable filter system is capable of filtering out large quantities of sediment to a nominal 5 micron. It consists of a vertical chamber containing the micro z media through which the water passes and the sediment is trapped, the media is then back washed at a pre-determined quantity of water or time to a drain. A standard sediment removal filter is usually recommended after the micro z if the water is used for human consumption.