I-644C5TB Natural Gas Filter Element

The I-644C5TB natural gas filter element is a high-efficiency coalescing filter element designed for use with hydrocarbons (such as jet fuel and natural gas condensates), primarily serving the functions of water removal and particulate removal.

Detailed technical specifications and application information are provided below:

Key Technical Specifications

 Filtration Rating  0.4 Microns (μm)

 Filter Media Type  All-Glass Fiber, featuring a multi-layer pleated media design

 Length  44 Inches (approx. 1118 mm)

 Outer Diameter / Inner Diameter  OD: 6.000 Inches / ID: 3.500 Inches

 End Cap Configuration  Threaded Base (requires threading into a compatible base during installation)

 Seal Material  Nitrile Rubber (Buna-N / NBR)

 Maximum Operating Differential Pressure  75 PSID (approx. 5.2 bar)

 Recommended Change-out Differential Pressure  15 PSID (approx. 1.0 bar)

 Maximum Operating Temperature  66 - 71°C (150 - 160°F) (Some sources also cite 115°C)

 pH Range  5 - 9 (Continuous Operation)

 Flow Direction  Inside-to-Out

 Compatible Fluids  Hydrocarbons such as aviation kerosene, gasoline, diesel, fuel oil, natural gas condensates, etc.

Product Features and Working Principle

1. Dual Core Functions

As the first stage (coalescing stage) of a filter/separator system, the I-644C5TB primarily performs the following two functions:

- Water Removal (Dehydration): It coalesces highly dispersed emulsified water (tiny water droplets) present in the fuel into larger droplets, which are then separated via gravitational settling.

- Particulate Removal: It efficiently captures and retains solid particulate contaminants present in the fluid stream. 2. Workflow

The fluid flows through the filter element from the inside out:

1.  Filtration Layer: First, the fluid passes through a high-precision filtration layer, which captures solid particulate contaminants.

2.  Demulsification Layer: It then enters the demulsification and coalescence layer, where the oil-water emulsion is broken down.

3.  Coalescence Layer: Tiny water droplets collide and coalesce into larger droplets on the surface of specially treated glass fibers. Once carried by the fluid to the outer surface of the filter element, these large water droplets—being denser than hydrocarbons—settle into a liquid collection sump under the influence of gravity and are subsequently discharged.

3. Design Advantages

- High Efficiency: Features a high-precision rating of 0.4 microns, ensuring the efficient removal of both solid particles and free water.

- Aviation Standard Compliant: Strictly adheres to the EI 1581 specification, making it suitable for use in aviation fuel refueling systems.

- Integrated Design: Facilitates easy installation and replacement.

 Key Application Areas

 Aviation Fuel  Filtration and separation of Jet Fuel—representing the single largest application scenario.

 Petrochemicals  Purification of process fluids (hydrocarbons) in oil refineries and petrochemical plants.

 Natural Gas Processing  Dehydration and hydrocarbon removal for natural gas condensates.

 Other Fuels  Filtration and separation of gasoline, diesel, fuel oil, and similar fuels.

Leah      Sales Manager

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