Cartridge DE filters are backwashed easily and completely, or rinsed off with a hose if you want to save water. The Cartridge DE grid material is made from woven polyester in a thicker weave. When DE pool filter manufacturers noticed cartridge pool filter owners using DE powder as a way to improve filter performance, they struck upon an idea and created cylindrical DE grids that looked like a filter cartridge, but with made with different materials that allow greater flow rates and longer filter cycles.
Heavy Duty tamper proof one piece tank clamp.Backwashes with attached multiport or Push-Pull valve.48 sq ft filter area with 8 curved grids.They can also be ‘bumped’, or backwashed for 10 seconds, to conserve water by lengthening the time between backwashes. These filters are used with a backwash valve, either a side mount multiport valve or push-pull valve, for high pressure removal of dirt and de powder, before re-charging the filter with fresh DE powder.
#Hayward de filter grids full#
The curved design conserves space within the tank, and uses only two sizes of grids, 7 full grids, and one partial grid which is half as wide, to fit behind the standpipe. Slightly curved grids are arranged in a concentric circle pattern, held in place by long thru-bolts that pull the bottom plate and the top manifold tightly together.
Integrated Check Valve prevents backflowĬonsidered the standard grid design, the curved grid assembly may also be the most popular, or certainly the most used grid type.Remove Flex-Tube Nest annually for cleaning.40 sq ft filter area, with 120 Flex-Tubes.The Perflex filter is not backwashed, but is flushed and drained periodically. This can result in longer filter cycles, or times between changing the DE powder. Another unique feature of the Perflex line of filters are their unique ‘Bump Handle’, which is used to bump the Flex-Tube Nest assembly, sloughing off and mixing the DE powder and dirt, to reduce filter pressure. Having over 100 tubes creates a large amount of surface area (40 sq ft) in a small package, called the Flex-Tube Nest, shown here. Called Flex-Tubes by Hayward, and called ‘fingers’ by most everyone I know, these 16in long tubes are about 1/2in wide and arranged in a concentric circle pattern. This style of DE filter grid is patented by Hayward, and used on the Perflex line of DE filters. These Grid Styles are ‘Finger’, ‘Curved’, ‘Straight’ and ‘Cartridge’. Grids are not the filter, but serve as the ‘holder’ for the DE powder, which does the filtering of the water. DE grids are the elements inside the tank which are coated with DE powder. If you are in the market for a new pool filter, today’s blog post is a comparison of DE pool filters for inground pools of 20-50,000 gallons.ĭE pool filters are available in 4 grid styles. This can allow you to run the pump less, or use fewer chemicals, clean up adverse water conditions fast – or avoid them altogether. filter is the way to go.ĭiatomaceous Earth pool filters remove particles under 3 microns, which far exceeds the capability of sand (20-40 microns) or cartridge (10-20 microns) filters. In-Ground Pools can use sand or cartridge filters, but if you want the best filtration possible, a D.E.
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