An Entirely New Technology
Years ago there were string-wound cartridge filters. Later, chopped fiber cartridges cemented with binders were developed. Then in 1978, Hytrex dramatically improved cartridge filter performance.
Proprietary technology supported by 23 patents made Hytrex filters unique in the cartridge filtration industry. Since 1978, field experience in hundreds of applications has proved Hytrex filters superiority. Thousands of repeat customers have confirmed Hytrex filters value.
GE Osmonics research, engineering and manufacturing expertise has generated further improvements to Hytrex.
What Hytrex Is Not
it is not strings of yarn mechanically wound around a separate core with added lubricants and anti-static agents.it is not short chopped fibers molded together with chemical binders.it is not layers of non-woven microfibers.Pleated, molded and layered microfiber cartridges function for the most part only as surface filters. Particles collect primarily on the surface, blinding the filter and reducing its effective life.
In molded filters, binders such as melamine, formaldehyde and phenols become extractables and leach into the filtrate. Their decomposition allows fibers to loosen and migrate. In string-wound filters, additives can leach and particles can slip through channels in the windings, contaminating the filtrate.
What Hytrex Filters Offer That Other Cartridges Cannot
True Graded Density
lower density at the surface of the filter with progressively higher density toward the center.particles are trapped throughout the entire cross section of the filter, creating superior dirt-holding capacity.no surface blinding, which reduces flow and increases filter changeouts.high flow rates with low pressure drop throughout the range of flows.longest service life compared with competitive cartridge filters.Thermally-Bonded Microfiber Construction
thermally fixed fibers will not move under pressure or pressure surges and dislodge dirt into the filtrate.extremely small continuous filaments maximize controlled porosity and complex tortuous paths.high structural strength and integrity provide excellent end sealing.lowest media migration ensures no fiber contamination of the filtrate.patented thermally-bonded blown microfiber process assures consistent performance, filter to filter.
A Single Pure Material
highest quality lot-controlled polypropylene.contains no wetting agents, solvents, anti-static agents, binders or additives of any kind.inert material means broad chemical compatibility.no leachables or extractables.incinerates to trace ash with no hazardous volatiles, for easy disposal.meets the requirements of the United States Food and Drug Administration (FDA) for food and beverage contact.
Automated Continuous Manufacturing
continuous construction in lengths of 1 in. (3.8 cm) to 50 in. (127 cm) with no joints or welds.self-supporting media requires no separate central core.marked with micron rating right on the cartridge for easy filter identification.thermal and vacuum finishing procedures virtually eliminate manufacturing debris.integral pure polypropylene end adapters fit filter housings without bypass.machine packaging and sealing of each cartridge provides clean filters in the field.automated, consistent manufacturing assures reliable performance and repeatable results year after year.
True Depth Filtration vs. Claimed Depth FiltrationMany cartridges claim to be depth filters. But to be a true depth filter, a cartridge must be able to retain contaminants throughout the entire cross section of the filter. To accomplish this, the density must increase progressively from the exterior surface to the interior. This graded density allows larger particles to be trapped near the surface while smaller particles penetrate the larger open areas to be trapped nearer the center of the filter in the smaller openings. Without graded density, a so-called depth filter will operate in practice only as a surface filter. With only the surface area loading with dirt, the pressure drop will increase rapidly, dramatically reducing both the dirt-holding capacity and the effective filter life.
Hytrex II versus the competitors
Hytrex II - thermally-bonded blown microfiber matrix-true graded densityparticles trapped throughout the depth of the filterno separate corehighest density at knife-edge seal
String-wound polypropylene-inconsistent densitychannels in windings allow particles topenetrate directly into filtrateseparate core required
Single density, polyolefin microfibers-no graded density surface blindingno central core
Molded, resin-bonded fibers- groovedno graded density (apparent secondfiltration surface is actually the groovecut into the filter to increase surface area)surface blinding
Layered non-woven microfibers-no graded density low density layers surface blinding separate core required
SpecificationsEight Standard Micron Ratings1,3,5,10,20,30,50,75 Microns
Two Standard DiametersGX Series:Inside Diameter: 1 in. (25 mm)Outside Diameter: 2 1/2 in. (64 mm)RX Series:Inside Diameter: 1 3/8 in. (35 mm)Outside Diameter: 2 3/4 in. (70 mm)
End Adapters and Accessories
All end adapters are thermally-welded to the pure polypropylene Hytrex filter. The positive weld assures bypass-proof performance and structural integrity without adhesives or additives, maintaining cartridge purity. All adapters including the elastomeric gasket comply with FDA requirements for food and beverage contact. Adapters and accessories pictured here are immediately available from inventory. Hytrex filters fit all currently available filter housings.
A- Elastomeric seal gasket, open end
E- Pure polypropylene molded adapter with 222 O-rings
silicon O-rings standard; EPR, Viton*, Buna-N O-rings available
F- Pure Locking polypropylene molded adapter with locking ears and two 226 O-rings
silicon O-rings standard; EPR, Viton, Buna-N O-rings available
H- Pure polypropylene molded fin
complete seal assures alignment
K- Pure polypropylene molded springreplaces metal assemblies
provides more positive seal
easy, quick changeout
L- Pure polypropylene
extended core centers filter on tube sheet adapter
eliminates tube guide
S- Pure polypropylene
closed end cap
complete seal other end open
SP- Stainless Steel Support Post.
316 stainless steel
extends chemical, temperature, viscosity and (delta) P limits of cartridge
reusable - more economical than cored cartridges
chamfered ends ease cartridge installation
9.75, 10, 19.5, 20, 29.25, 30 and 40 inch lengths