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Pool Filter

Every pool has to have a filter whether it is for a regular pool or a salt water pool.  There are
many different kinds of pool filters, and most are able to be used for any type of pool.  A lot of
pool filters are set up in the same way, and therefore, they can look a lot alike, but be different
forms of filtering systems.  All pool filters basically work the same way because the primary goal of
any system is to keep the water clean for swimmers.

One of the most common forms for pool filters is the sand filter.  While sand filters have been
popular for years, they have continually improved on the technology many times over the years.  
As a result, our standards for sand filters these days are much higher.  Today’s sand filter is now
capable of flowing at the rate of 15 to 20 gallons per minute per square foot of filtered area. This
type of pool filter is a quick method for cleaning the water in virtually every type of pool.

The Filtering Method

The water begins the filtering process by entering the filter through the upper bulkhead fitting.  It
then will pass through into a diffuser.  This causes the water to pass through evenly in the sand
bed.  As the water passes down through the sand bed, any of the debris in the water gets trapped
between the many grains of sand in the sand filter.  There is a lateral assembly that is at the
bottom of the sand filter which helps to collect the water so that it can then return it back to the
pool when it is finally cleaned.  There is also an air relief tube that serves to continuously remove
any air pockets that are formed at the very top of the sand filter.  The air relief valve is actually
there to help give the air a way to manually remove any type of air pockets that are inside of the

Your Other Options

A lot of debris gets inside of your pool so a sand filter is there to help be able to remove any
pieces of debris that are about 40 microns in size.  This amount of debris removal is very good for
pools, at least in most cases.  Sand filters do have competitors, though. A DE filter removes the
debris down to roughly five to eight microns in size.  It is, however, not a very practical idea for
any pools that are used a lot.  A DE filter is used for pools that are not frequently used. Cartridge
filters are far more economical, but they run at a much lower pressure.

If you’re looking for a solid pool filter, the sand filter is a good filter to have handy when you want
to have a personal pool of your own.  It has developed a lot and is one of the best filters
available.  It helps keep your pool nice and clean which then keeps you safe and healthy while
you swim the days away.
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