|
|
|
HAYWARD
HIGH-RATE 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.
HAYWARD PRO SERIES TOP MOUNT SAND FILTER (6-position multiport valve included )
w/1.5" multiport
valve $349.00 800-POOL-112 (800-7665-112) w/1.5" multiport
valve $369.00 800-POOL-112 (800-7665-112)
6-POSITION TOP MOUNT MULTI-PORT FILTER VALVE FOR SAND FILTER
$109.00
800-POOL-112 (800-7665-112) 800-POOL-112 (800-7665-112)
HAYWARD
CARTRIDGE
FILTERS
Cartridge
filtration has been available for a relatively long time,
but only recently has it begun to enjoy rapid growth and
acceptance. When water passes
through a cartridge filter, dirt is screened out at the
surface of the cartridge element. When clean, the element
will trap larger particles, with finer particles being
filtered out as the pores of the element become clogged by
the larger debris. The cartridge
element can be removed and cleaned by pressure washing
inside and out with a garden hose.
HAYWARD STAR CLEAR CARTRIDGE FILTER (element included)
$169.00 800-POOL-112 (800-7665-112) $199.00 800-POOL-112 (800-7665-112)
REPLACEMENT CARTRIDGE ELEMENTS
DESCRIPITION $39.00 800-POOL-112 (800-7665-112) $58.00 (800-7665-112)
HAYWARD STAR CLEAR PLUS CARTRIDGE FILTER (element included)
$289.00 800-POOL-112 (800-7665-112) $289.00 800-POOL-112 (800-7665-112) $319.00 800-POOL-112 (800-7665-112) $379.00 800-POOL-112 (800-7665-112)
REPLACEMENT CARTRIDGE ELEMENTS
FILTER $84.00 800-POOL-112 (800-7665-112) $92.00 800-POOL-112 (800-7665-112) $138.00 800-POOL-112 (800-7665-112)
HAYWARD MICRO STAR CLEAR IN-LINE CARTRIDGE FILTER (element included)
$99.00 800-POOL-112 (800-7665-112)
REPLACEMENT CARTRIDGE ELEMENT
FILTER $28.00 800-POOL-112 (800-7665-112)
HAYWARD
DIATOMACEOUS
EARTH (D.E.)
FILTERS Many pool
professionals consider D.E. filtration to be the finest,
because it is capable of removing smaller particles than
either sand or cartridge. Diatomaceous earth
is a porous powder with microscopic openings, that, when
magnified, look like tiny sponges. Clear water can pass
through these openings, but particles, as small as one to
three microns, are trapped during the first pass through the
media. All D.E. filters
have internal elements that become coated with D.E. It is
this 'filter cake' that strains dirt, dust, algae and some
forms of bacteria from the water. Similiar to sand
filters, when a D.E. filter becomes dirty, it is cleaned
either by backwashing or by regenerating and draining the
clogged D.E. to the 'waste' line. To restore filtration, a
fresh 'charge' of D.E. is added to the filter.
Valve Selection for Pro-Grid DE Filter
$109.00 800-POOL-112 (800-7665-112) $149.00 800-POOL-112 (800-7665-112) 800-POOL-112 (800-7665-112)
HAYWARD Perflex Extended Cycle DE FILTER
$279.00 800-POOL-112 (800-7665-112) $329.00 800-POOL-112 (800-7665-112)
HAYWARD Perflex Extended Cycle DE FILTER
$449.00 800-POOL-112 (800-7665-112) $489.00 800-POOL-112 (800-7665-112)
