Sand Filters
 The
oldest and most popular method of filtration is
sand. Sand filters share two things in common:
1) When in the filtration mode, water always flows
from top to bottom;
2) They all have some sort of lateral or underdrain
with slots to hold back sand while allowing clean,
filtered water to pass through.
High-rate sand filters
use a special filter sand, normally .45 to .55
mm (also known as pool grade #20 silica sand),
because it has sharp edges that serve to separate
particles, allowing filtration to take place.
They operate on the basis of "depth"
filtration; dirt is driven through the sand bed
and trapped in the minute spaces between the particles
of sand. Initially, a clean sand bed will remove
larger particles, and then, as the bed starts
to load up with dirt, it will remove finer particles.
Cleaning of the media, or sand, is accomplished
through reversing the flow through the filter,
to the "waste" line. This is known as
backwashing.
1.
Flange Clamp Design
allows 360° rotation of valve to simplify
plumbing.
2. Integral
Top Diffuser
ensures even distrubution of water over
th top of the sand media bed. Full-size
internal piping gives a smooth, free-flowing
performance.
3. Unitized,
Corrosion-Proof Filter Tank
molded of tough, durable colorfast polymeric
material for dependable, all-weather performance
with only minimal car.
4. Efficient,
Multi-Lateral Underdrain Assembly
with precision engineered, self-cleaning
360° slotted laterals gives totally
balanced flow of sand.
5. Integral
Molded Drain Plug
for easy draining of tank, without the loss
of sand.
6. Totally Corrosion-Proof
Base
Is rugged and attractively styled to provide
strong, stable support.
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Side Mount Valve
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Model Number
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MSRP
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Your Cost
|
Order Now
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S200
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$529
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$430.00
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S240
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$749
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$467.00
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Top Mount
Valve
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Model Number
|
MSRP
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Your Cost
|
Order Now
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S180T
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$280
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$229.00
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S210T
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$366
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$259.00
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S244T
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$400
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$279.00
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Model Number
|
HP
|
MSRP
|
Your Cost
|
Order Now
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S144T
|
1
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$422.00
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$299.00
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S166T
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1
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$525.00
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$219.00
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