How our water systems work
The Pre-Coat solution
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How big is 1/2 of a micron?
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It's difficult to imagine something as small as 1/50 000 inch
or 1/2 of a micron. So let's put it into perspective.
A single particle of cigarette smoke is approximately
1/2 a micron in size.
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Everpure's unique pre-coat design consists of material folded over a
drainage grid which supports a coat of the adsorptive Micro-Pure®
powder - a proprietary blend of powdered activated carbon and other filtering
materials.
When tap
water fills the cartridge and flows through the Micro-Pure coating, foul
tastes and odours are stripped from the water by millions of Micro-Pure
particles. Water leaving your tap is sparkling, brilliant, and free of
unwanted tastes and odours.
The
Filtration Solution
Microscopic
protozoan cysts, asbestos fibers, particles of rust and turbidity and
many other substances are often smaller than 5 microns in size. Conventional
filters won't remove these from your water, but these Drinking Water Systems
will. Each of them is Certified to remove at least 99% of turbidity, 99.6%
of asbestos fibers, 99.9% of all particles 1/2 micron and larger in size,
and 99.9% of cryptosporidium cysts, the smallest of intestinal parasites.
The Absorptive Solution
Everpure's System provides the exceptional mechanical filtration capacity
of pre-coat with the highly efficient chemical removal capabilities of
carefully selected granular activated carbon. The two-chambered unit is
no bigger than a large thermos bottle and fits easily beneath the kitchen
sink. Under normal water conditions and usage, Everpure's systems provide
six months to a year's supply of drinking and cooking water right from
the tap.
How the Everpure pre-coat water filter works
A filter's ability to physically remove turbidity and suspended matter
from water differs greatly from its ability to remove tastes and odours,
which usually exist in dissolved form. Most common filters are capable
of only one or the other of these functions, while Everpure has uniquely
combined both in the same filter.
Unique Pre-Coat Design
Incoming water passes through a non-return valve at the bottom of the
inlet tube and mixes with the MICRO-PURE® blend to form a coating
on the external surfaces of the folded filter element or septum.
MICRO-PURE®, the unique filtering material used in Everpure precoat
filters, is a proprietary blend of powdered activated carbon and other
food-grade water treatment materials.
Any tastes or odours in the water passing through the MICROPURE®
formed on the supporting septum are adsorbed by the powdered carbon.
This MICROPURE® also provides part of the sub-micron filtering system,
which wilt filter out all suspended particulate matter greater than 0.5
microns (0,0005 mm).
As the filtered water passes through the septum, it is collected in a
cavity, formed by a non-compressible grid from where it flows to the filter
outlet, ensuring premium quality 'ingredient' water.
Most Everpure water filters are compact, point-of-use filters that use
the pre-coat filtration method generally employed in large complicated
industrial applications where premium quality water is necessary at any
cost. Everpure pre-coat filters provide this premium quality water at
reasonable cost with great convenience.
Large Capacity to Remove Tastes and Odours
Extremely small particles of activated carbon are part of the proprietary
MICRO-PURE® filtering media in Everpure pre-coat filters.
This activated carbon removes the off-tastes and odours in a physiochemical
process called adsorption.
The total surface area available determines a filter's capacity and ability
to adsorb tastes and odour
molecules. The smaller the carbon particle (in powdered
form), the more efficient it is at adsorption. Everpure's
MICRO-PURE® filtering media is microscopically fine,
providing a large total surface area that is easily
accessible to the water flowing through the filter.
Consequently, it is extremely efficient at adsorbing
tastes and odours.
Large Filtering Area ... Small Pore Size
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Functional filtering area and pore size determine
water quality.
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The unique Everpure precoat design gives you 40 times more
filtering area than a bed-type filter and over 4 times more
than a spool type filter of equivalent size.
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The ability of a filter to take turbidity out of water is more a physical
removal function than one of chemical adsorption. This physical filtration
depends primarily upon two important factors: the size of the pores through
which the water must pass, and the total amount of filtering area available.
Pore size is important because it determines the size of the impurities
that will be physically prevented from passing through the filter. The
pore size of the MICRO-PURE® cake is microscopically so small that
the Everpure filter removes impurities as tiny as 0.5 micron. This small
pore size is necessary to produce crystal clear water and to remove particulate
industrial wastes (such as asbestos fibres).
When a filter's pore size is so small a large surface area is essential
to provide an adequate rate of flow and acceptable filtration capacity.
The droplets of water flowing through the small pores in the Everpure
filter cake have a mist-like quality, allowing an extremely low velocity
through each pore. This, combined with the large filter area designed
into each Everpure filter,
produces excellent dirt removal capacity.
Everpure Filters Do Not Secretly Fail
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Comparative Pore Sizes.
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Pore size is important because it determines the size of
impurities that will be removed from the water.
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The Everpure pre-coat design uses a balanced pressure principle that
allows water to flow through both sides of the filter element and then
along a non-compressible drainage grid sandwiched in between.
When the water pressure suddenly changes, as with water hammer, equal
pressure is exerted on both sides of the grid. Because the grid is rigid
and will not flex or compress, the MICRO-PURE® cake is not disturbed.
The collected dirt or impurities cannot migrate through the filter media.
A very important feature of the Everpure filter is that the clarity of
the water it produces remains uniform throughout the filter's life. As
the filter actively removes impurities from the water, its microscopically
small pores slowly fill... and the amount of water the filter yields gradually
becomes less and less. When the flow of water from
the filter becomes too slow for convenience, the filter
cartridge should be replaced. The Everpure filter
cartridge is designed to operate at pressures upto
142 psi (10 bars), but can withstand hydrostatic test
pressures of up to 500 psi (34 bar).
Contact Us
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Cape Town:
Kilarney Gardens
(T) 27(0) 021 556 7418
(F) 27(0) 21 557 6023
(C) 082 497 3589
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Enjoy cleaner, better tasting water.
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National Sanitation Foundation Standards
Standard No. 42: Aesthetic Effects
Chemical Reduction Units:
Taste and Odour Reduction and Chlorine Reduction - Category
1
Particulate Reduction Units:
Particulate Reduction - Class 1, 99.9% reduction of particles
one-half micron and larger in size.
Standard No. 53: Health Effects
Mechanical Filtration Unit:
Turbidity Reduction
Cyst Reduction
All our Everpure units have been tested and listed by NSF
only for the functions listed above. Check for compliance
with state and local laws and regulations. Do not use where
the water is microbiologically unsafe or with water of unknown
quality without adequate disinfection before or after the
unit.
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