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Hankison HTA Series high temperature afterfilters are designed to hold a large amount of desiccant fines without plugging. The result is long cartridge life, even when installed downstream of heated type dryers using highly friable desiccant.
Compressed air leaves a desiccant dryer containing dust concentrations typically in the range of up to 0.05ppm by weight in heatless type dryers and up to 5 ppm by weight in heated type dryers. Particle size ranges from 200 microns to about 1 micron. This desiccant laden compressed air enters the filter housing where a reduction in air velocity and a sharp change of direction cause particles in the range of 200 to 20 microns to drop to the bottom of the housing.
Three Stage Filtration
Compressed air leaves a desiccant dryer containing dust concentrations typically in the range of up to 0.05 ppm by weight in heatless type dryers and up to 5 ppm by weight in heated type dryers. Particle size ranges from 200 microns to about 1 micron. This desiccant laden compressed air enters the filter housing where a reduction in air velocity and a sharp change of direction cause particles in the range of 200 to 20 microns to drop to the bottom of the housing.
The air stream then enters the outside of the filter cartridge and flows through layers of glass fabric cloth. Small diameter fibers, which form a web in the openings between thread strands, cause a dust layer to form as dust bridges the pores. Dust continues to collect on the outside of the cloth as separate loose particles. The voids between these particles form pores and flow-passages and become an efficient filter in itself.
As the dust bed continues to thicken it reaches a point where outer layers of dust shed off the cartridge into the bottom of the housing.
Air next travels through a multi-layer graded in-depth filter media where all remaining fines one micron and larger are captured.
A final wrap of glass fabric cloth prevents fiber migration.
|Model||Maximum Flow @
100 psig (6.7 barg)
|MWP (1) @
|In / Out
|HTA400||400||680||Pressure Vessel||165||11.6||3" NPT||0740-3||1|
|HTA600||600||1019||Pressure Vessel||165||11.6||3" NPT||0740-4||1|
|HTA1200||1200||2039||Pressure Vessel||165||11.6||3" NPT||0740-4||2|
|HTA1800||1800||3058||Pressure Vessel||165||11.6||3" NPT||0740-4||3|
|HTA2400||2400||4078||Pressure Vessel||165||11.6||4" ANSI FLG||0740-4||4|
|HTA3000||3000||5097||Pressure Vessel||165||11.6||4" ANSI FLG||0740-4||5|
|HTA4800||4800||8155||Pressure Vessel||165||11.6||6" ANSI FLG||0740-4||8|
|HTA6600||6600||11213||Pressure Vessel||165||11.6||6" ANSI FLG||0740-4||11|
|HTA8400||8400||14272||Pressure Vessel||165||11.6||6" ANSI FLG||0740-4||14|
|HTA11400||11400||19369||Pressure Vessel||165||11.6||8" ANSI FLG||0740-4||19|
1 Units with higher MWP are available; contact factory. Model HTA1200 and larger are ASME code constructed and stamped.
Pressure drop: At rated flow conditions pressure drop will be less than 1 psig (0.07 barg). Pressure drop will increase only as the filter cartridges become loaded with solid particles.
Filter cartridge replacement: Filter cartridges should be replaced when pressure drop across the cartridge exceed 10 psig (0.7 barg).
Maximum temperature: 450°F (232°C)