The filter’s grid assembly comes in different sizes and shapes and is made of plastic covered in synthetic cloth. An air relief valve on the top of the pressure DE pool filter allows internal pressure to release before servicing the equipment. The system will have water inlet and outlet lines located on the bottom half of the filter tank. There is also a seal between the two halves consisting of an O-ring or a gasket. Pressure DE systems have vertical filter tanks, where two halves are held together by compression clamps, bolds, or locking screw closure rings. Certified Pool Operators® require extensive knowledge of all pool filtration systems and DE filtration is a great jumping-off point. This week, we’ll look at the pressure DE pool filter, how they work and how to properly maintain them. is limited - D.E.In our last article, we went over essential information on vacuum DE pool filters and their uses at a swimming facility. is messy and gets everywhere - Grids can tear and leak D.E. The Good: - Filters down to 5 Microns or less - excellent - Can be backwashed in between cleanings - Only have to take it apart and clean it every six months (In most cases) - Grids are long lasting and durable - Water clarity is very good The Bad: - Can be a pain to take apart and clean - D.E. Many cities require it to be plumbed to a P-Trap or ban them entirely. They can also be challenging to take apart and clean. Filter is that they can be messy to take apart and clean, especially if your backyard is all cement. Convenient if the pool gets a lot of dirt and use each season. This is a process in which the water flow is reversed forcing water inside the grids and pushing dirt and algae off of the grids and out the backwash pipe. Filter).Īnother benefit is the ability to backwash a D.E. on the grids (or cartridges in the case of a Quad D.E. Filter just utilizes the sq ft of filtration area much more effectively with the coating of D.E. Filter is inferior to say a 200 sq ft Cartridge filter or a 300 lb Sand Filter. So don't let the smaller sq ft size fool you into thinking that a D.E. So you can easily get away with using a 48 sq ft D.E. Filter sizes are 36 sq ft, 48 sq ft, 60 sq ft, and 72 sq ft (they also make a 100 sq ft Quad D.E. Filter is that the design allows for a very small amount of filter sq ft area to keep your pool crystal clear. Filter will give you the best water quality of the three filter types.Īnother benefit of a D.E. So a micron is a very small measurement and a D.E. A human hair is about 75 microns across (depending on the person). For Size comparison, a human red blood cell is about 5 microns across. Filter to filter down to an amazingly low 3 microns.Ī "micron" is an abbreviated term for "micrometer", or a millionth of a meter (1/1,000,000 meters). coats the grids and acts as a barrier trapping dirt, debris, algae, and organic particles. They use a set of grids or cartridges depending on the filter type and a coating of D.E. Filters or Diatomaceous Earth Filters offer the best filtration of the three types. Filters are the most common filter type in my area so I will touch on these filters first.
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