Outside-to-In Flow Datasheet PDF (85 KB)
Inside-to-Out Flow Datasheet PDF (82 KB)

ACO Series - Outside-to-In Flow Cartridges
Remove Water and Dirt from Jet Fuel and Avgas
- Free and emulsified water to less than
5 ppm
- 1/2 micrometer particulate removal
- Provides protection against “slugs” of water
- Pressure increase signals cartridge change
- Use with existing filter housings
DESCRIPTION
Patented Aquacon® Filter Cartridges have a unique high-capacity inner filter media which removes all free and emulsified water from hydrocarbon fuels down to less than 5 ppm in the effluent. Absorbed water is chemically locked into this media.
When a cartridge reaches its water holding capacity, its accordion pleats swell and cause an increase in the differential pressure which signals the operator to change the cartridge.
Solid contaminants are removed by the cartridge’s two particulate filter media layers. The pleated accordion style design provides a large surface area for maximum dirt holding capacity. Models are offered for particulate filtration down to 1/2 micrometer size with 98% plus efficiency. Performance is not affected by the presence of common surface active agents.
Compact Aquacon® Cartridges are quick and easy to install. Models are available to fit most existing standard housings. Refer to Cartridge Selection Table on below.
*****CAUTION*****
DO NOT USE WITH PRE-MIXED FUELS CONTAINING
ANTI-ICING ADDITIVES.
Use form 1846 for cartridge change out at flowrates less than rated flow.
CARTRIDGE SELECTION TABLE

NOTE: 1/2 micron rated Aquacon® Cartridges are recommended for use with jet fuel and avgas. Effluent fuel quality meets requirements for EI 1583.
TECHNICAL INFORMATION
- Maximum operating temperature is 160°F
- Micron ratings are nominal at 98%+ efficiency
- Aquacon® Cartridges can significantly reduce flow when loaded with water or dirt. Appropriate precautions should be taken in applications where fuel flow must be maintained or where surge conditions can occur.
- Replace the cartridge if the differential pressure exceeds 25 psid. For service life information, please refer to Operating Procedure #1839 or consult your company fuel handling procedures.
- Typical water holding capacity for ACO-61401L is 700 ml.
ACI Series - Inside-to-Out Flow Cartridges

Remove Water and Dirt From Jet Fuel and Avgas
- Qualified to EI-1583 Monitor specifications
- 1/2 micrometer particulate removal
- Provide protection against “slugs” of water
- Pressure increase signals cartridge change
- Replace existing coalescers in into-plane filter/separator vessels
- Inside-to-out flow pattern
DESCRIPTION
Patented Aquacon® Filter Cartridges have a unique high-capacity inner filter media which removes all free and emulsified water from hydrocarbon fuels down to less than 5 ppm in the effluent. Absorbed water is chemically locked into this media.
When a cartridge reaches its water holding capacity, its accordion pleats swell, and cause an increase in the differential pressure which signals the operator to change the cartridge.
Solid contaminants are removed by the cartridge’s two particulate filter media layers. The pleated accordion style design provides a large surface area for maximum dirt holding capacity. Performance is not affected by the presence of surface active agents.
The Velcon ACI open-end and threaded-base Aquacon® Cartridges have been qualified to EI-1583, the “Energy Institute Specifications and Qualification Procedures for Aviation Fuel Filter Monitors with Absorbent Type Elements.”
The ACI-6xx01L open-end and ACI-6xx01LTB threaded base Aquacon® elements are intended to be installed in the final filter/separator vessel in place of coalescers for more protection against dirt and water downstream.
*****CAUTION*****
DO NOT USE WITH PRE-MIXED FUELS CONTAINING
ANTI-ICING ADDITIVES.
CARTRIDGE SELECTION TABLE

1 Overall length does not include the 1” bolt for the ACI-6xx01LTB threaded base ACI’s.
Note: Drain vessels equipped with the ACI Aquacon Cartridges on a daily basis from an upstream drain to ensure upstream water is removed to prolong element life.
TECHNICAL INFORMATION
- Maximum exposure temperature is 160°F.
- Cartridges are rated at 1/2 micron nominal efficiency.
- Aquacon Cartridges can significantly reduce flow when loaded with water or dirt. Appropriate precautions should be taken in applications where fuel flow must be maintained or where surge conditions can occur.
- Replace the cartridge if the differential pressure exceeds 25 psid. For service life information, please refer to Operating Procedure #1839 or consult your company fuel handling procedures.
- ACI burst strength exceeds 175 psid. If F/S vessel coalescer deckplate or manifold is not certified to 15 bar (220 psi) strength, a differential pressure limiting device, set from 25 - 30 psid, should be installed on the filter/separator vessel.
- Typical water holding capacity for ACI-61401L is 900ml.
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