STRING WOUND SEDIMENT FILTER

DESCRIPTION

String
wound sediment
filter
cartridges
are
structured
with loose
outer
layers
and
tight
inner
layers
which
can
offer
true
depth
filtration
for
high
dirt
holding
capacity
and
extremely
low
media
migration
to
ensure
temperature
and
chemical
compatibility.
The
main
advantage
of the
string
wound
filter
is
its
exceptionally
high structural
strength;
therefore,
they can withstand
severe
operating conditions.

Features

• Fits
  all
  the
  standard
  housings
• Low-pressure
  drop,
  high
  dirt
  holding
  capacity
  , and
  long
  service
  life
• Loose
  outer
  layers
  and
  tight
  inner
  layers
  offer
  effective
  depth
  filtration
• Various
  filter
  media
  fit
  with
  various
  applications

Applications Of The String Wound Sediment Filter

• Food
  &
  Beverage
• Semiconductor
• Pharmaceuticals
• Electric
  Plating
• DI
  &
  RO
  pretreatment

Specifications Of The String Wound Filter

• Filter
  media:
  Polypropylene,
  Fibrillated
  Polypropylene,
  Cotton,
  Glass
  Fibre
• Outside
  diameter:
  55mm,
  61mm,
  63mm,
  65mm,
  115mm
• Inner
  diameter:
  28mm,
  30mm
• Length:
  10″,
  20″,
  30″,
  40″
• Micron
  Rating
  (micron):
  5,
  10,
  20,
  30,
  50,
  75,
  100
• Polypropylene
  material
  for
  non-organic
  solvent,
  maximum
  recommended Operating
  temperature
  <70
  degrees
  C
• Bleached
  cotton
  material
  filter
  cartridge
  with
  stainless
  core
  applies
  to
  organic solvent,
  water,
  oil,
  alkalinity
  solvent,
  beverage,
  pharmaceuticals,
  maximum
  Recommended
  operating
  temperature:
  120
  degree
  C.

The latest development in string-wound cartridges has overcome problems with roving and friction-spun yarns and has all the features of melt-blown cartridges. The media of the new string-wound cartridge is made from the continuous filaments-each individual filament that continues throughout the entire length. There are no short fibers, making the cartridge free from any media migration. These continuous filaments are melt-spun in a way that no chemicals like spin-finish, wetting, and antistatic agents, surfactants, emulsifiers, etc., are required. These chemical-free continuous filaments are then randomly oriented to each other, intermixed, looped, and entwined forming a non-round, highly stable, bulky yarn.

Random short loops protrude from the surface of the yarn. As the filter is wound, every single yarn traps part of the loops of the adjacent yarn giving a highly stable structure. The yarns get locked in place and will not roll or move aside. This stable structure also gives excellent sealing. It easily passes the paper clip test. Yarn that doesn’t shift easily also makes the filter resistant to particle unloading. With advancements in winding technology (computer controls) and pitch, the number of crossings and space between each yarn can be continuously varied and controlled from start to finish of the cartridge winding. The inner layers of yarn can be wound closer together and the distance between the yarns can be gradually increased toward the outer layers. This achieves density grading without changing the winding tensions for more consistent performance in string-wound cartridges. Coarser particles are trapped in the outer layers and finer particles in the inner layers. In this cartridge, the liquid flows through the entire yarn structure-there are no typical diamond-shaped holes.