Customer Cases

FO-644A3 is a special filter element for aviation fuel filtration system produced by Velcon brand under Parker . It is mainly used for fine filtration of aircraft fuel system and ground refueling equipment to ensure fuel cleanliness and protect engines and key components.

FO-644A3 Technical data

Product Type: Cartridge Filters

Size: 3-1/2 in. ID x 6 in. OD x 44 in. L

Product Category: Industrial Filters

Inside Diameter: 3-1/2 in.

Length: 44 in.

Outside Diameter: 6 in.

Application Fluid Type: Fuel

Flow Rate: 176 GPM

Function Type: Particulate Removal

Micron Rating: 3 µm

Filter Media: Microfiberglass

FO-644A3 Main Features

1.Applications

Applicable to fuel systems in the aviation field (such as commercial aircraft, military aircraft, and helicopters). It is also commonly found in airport ground refueling trucks, fuel delivery systems, etc.

2.Filtration performance

High-precision filtration: It can usually filter particles to the micron level (the specific accuracy needs to be checked in the technical documents, and similar models are mostly 3-10 microns).

Efficient water separation function: Some Velcon filter elements use composite materials to separate free water in the fuel and prevent water from entering the engine.

Compliance with standards: Meets aviation fuel cleanliness standards such as ISO 4406 and SAE AS4059.

3.Structure and material

Filter material: Multi-layer glass fiber or synthetic media to ensure high dirt holding capacity and long life.

Structure: Metal end caps (usually aluminum or stainless steel) and sealing rings are designed to resist high pressure and fuel corrosion.

Compatibility: May be used with Parker Velcon FO-600 series filter housings.

4.Maintenance and replacement

Replacement interval is determined by differential pressure indicator or regular maintenance plan.

Follow Parker's installation procedures when replacing to avoid seal failure

Related Part number

FO-614A1

FO-614A1TB

FO-629A1

FO-629A1TB

FO-644A1

FO-644A1TB

FO-656A1

FO-656A1TB

FO-614A2

FO-614A2TB

FO-629A2

FO-629A2TB

FO-64A2

FO-644A2TB

FO-656A2

FO-656A2TB

FO-614A3

FO-614A3TB

F0-629A3

FO-629A3TB

FO-644A3

FO-644A3TB

FO-656A3

FO-656A3TB

FO-614A5

FO-614A5TB

FO-629A5

FO-629A5TB

FO-644A5

FO-644A5TB

FO-656A5

FO-656A5TB

Contact US:

Contact: Ms. Lynn Xu

E-mail: lefilterlynn@gmail.com