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Parker Velcon VF-61E Filter Housing, for Aquacon Filter Cartridges
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Parker Velcon VF-61E Filter Housing, for Aquacon Filter Cartridges


The VF-61E is a versatile filter housing designed for use with several different high performance Aquacon filter cartridges, as well as a variety of paper filters and coalescer/separator cartridges. Use the VF-61E with band clamp closure for areas with limited space.

Aquacon cartridges filter out water by chemically locking it into layers of super-absorbent media. Water removal efficiency is not affected by common surfactants or additives. Water capacity is as much as 1-1⁄2 quarts, depending on the flow rate. These cartridges also effectively filter out dirt, rust and other particulates.(See caution)

As a cartridge reaches its water- holding limit, the media expands very rapidly and restricts the flow. For oils and other high viscosity liquids, the pressure drop will rapidly increase, signalling the need to change cartridges.

The VF-61E, with ACO series cartridges installed, has become the standard for low flow rate full flow aviation fuel monitor applications.

Over Pressure Protection:

When exposed to a high concentration of water, the differential pressure across an Aquacon cartridge will immediately increase. Pressure bypasses or other means to limit the inlet pressure to 75 psi (5 bar) should be installed to prevent the cartridge from collapsing.


  • Aquacon cartridges remove free and emulsified water from fuels to less than 5ppm.
  • Filtered water is chemically locked in and can’t be squeezed out.
  • Provides Protection against 'slugs' of water.
  • Pressure Increase signals cartridge change.
  • 0.5 Micron Particle Protection @ 98%+ Efficiency.


  • Jet Fuel
  • Avgas
  • Kerosene
  • Gasoline

NOTE: For non-EI qualified applications. Housing does not meet EI1596 or EI1581 qualifications.

CAUTION: Do not use Aquacon absorbent cartridges (AC, ACO or AD or ASL Series) with pre- mixed jet fuel containing anti-icing additives, or with gasoline/alcohol blends.

CAUTION: To protect the fuel system, including the filter and other components, be sure to install pressure relief valve(s).

Housing Specification (Supplied Without Cartridge)
Max. Operating Pressure150 PSI
Material: HeadCast Aluminium, with Stainless Steel Band-Clamp
Material: BowlCarbon Steel, TGIC-Polyester Coated Interior and Exterior
Inlet/Outlet Connection Size1,1/2" NPT
Distance Between Faces5,7/16" (13.8cm)
Mounting Holes in Head 
O'Ring: For Jet Fuel (Standard)Buna-N (Spare Part No. G-0986)
Height: With Petcock20" (50.8cm)
Diameter: Bowl6" (15cm)
Diameter: Overall7.5" (19cm) Including Clamp
Weight: Bare8lb
Weight: Packaged10lb
Hardware IncludedBuna-N O'Ring, 1/8" Brass Petcock Vent Valve, and 1/2" NPT Drain Valve
Optional Extras
O'Ring: VITON - For Gasoline / SolventPart No. G-0986A
Differential Pressure Gauge AssemblyPart No. 10678
Drain Valve, Carbon Steel 1⁄2” NPT Ball Valve, with Mounting nipple.Part No. 554Y020
Cartridge Selection Table
Model NumberTypeMediaApplicationMicron RatingCollapse Pressure (PSI)Flow Rate (US GPM)Max. Op. Temp.Data Sheet
ACO-512P3RAquaconJet Fuel & AvgasDirt & Free Water0.3 @ Nom. @ 98% Efficiency755-50250°F / 121.1°C1681
ACO-51201RAquaconJet Fuel & AvgasDirt & Free Water0.5 @ Nom. @ 98% Efficiency755-50250°F / 121.1°C1681
OS-51288Coalescer / SeparatorJet Fuel & AvgasDirt & Free Water0.5 Jet Fuel 5-35, Avgas 5-45 1858
AC-51205AquaconMo-GasDirt & Free Water5 5-50 1582
AD-51225AquaconDieselDirt & Free Water25 15-50 1655
OS-51286Coalescer / SeparatorDieselDirt & Free Water5 5-18 2118
AD-51225AquaconBiodieselDirt & Free Water25 15-50 1655
AC-51205AquaconOilsDirt & Free Water5 Varies with oil viscosity 1582
AD-51225AquaconOilsDirt & Free Water25 Varies with oil viscosity 1655
ASL-51201AquaconSolventsDirt & Free Water1 5-50 1692
FO-512PL1/2Paper FilterAll FuelsDirt0.5 5-50, Varies with oil viscosity 1549
FO-512PL05Paper FilterAll FuelsDirt5 5-50, Varies with oil viscosity 1549
FO-512PL25Paper FilterAll FuelsDirt25 5-50, Varies with oil viscosity 1549
FOS-512PL25Synthetic filterAll FuelsDirt25 5-50, Varies with oil viscosity 1734

Optional Differential Pressure Gauge Assembly, Part No. 10678 For use with VF-61E

This unit measures pressure difference between two points. The gauge allows for a simple reading on an easy-to-read scale. A red/green dial with a breakpoint located at 15 psid alerts the user of the condition of the process.

This kit consists of the following components:

  1. Differential Pressure Gauge: aluminum body, 1/8 ̋ NPT bottom, 1 ̋ molded lens & 0-20 psid scale
  2. Compression Fittings: 4 straight, 2 90° elbow
  3. 1/4 O.D. Copper Tubing


When the needle is in the green zone of the gauge during normal flow, the differential pressure is less than 15 psid across the installed element, and the element does not need to be changed out.

When the needle is in the red zone, the differential pressure is more than 15 psid and the element should be changed out. It has reached its recommended maximum pressure differential.


Do not mount the P/N 10678 differential pressure gauge assembly any closer than 2” from a steel bracket or pipe. The gauge has a magnetic piston, and mounting too close to steel may affect the accuracy.

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Product CodePARWMIF238

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