The MIL.6-842 Coalescing Filter Element is a military-grade fluid conditioning component engineered for the demanding filtration requirements of modern ground vehicle and mobile hydraulic systems. Designed to operate under extreme environmental and operational stresses, its primary function is the mechanical separation of liquid contaminants—specifically water, oil, and coolant aerosols—from critical air and fluid streams. By coalescing sub-micron droplets into drainable liquid masses, it serves as a frontline defense against system corrosion, lubrication washout, and premature component wear. This product is not merely a filter; it is a logistically managed, performance-qualified component essential for maintaining the operational readiness and extended service life of tactical and support vehicles in harsh field conditions.
Operating Temperature Range :
-40°F to +275°F
Initial Pressure Drop :
< 3.0 psid (0.21 bar) at rated flow
1. Product Concept
The MIL.6-842 Coalescing Filter Element is a militarized fluid conditioning component engineered to deliver reliable liquid-phase separation in high-vibration, high-contamination environments. Its core function is to protect critical vehicle and mobile equipment systems by forcibly removing entrained liquid aerosols—such as water, oil, and coolant—from air and fluid streams through mechanical coalescence. Designed to meet stringent performance and durability specifications, this element serves as a standardized, logistically supported safeguard that ensures fluid purity and system integrity under the severe operational stresses encountered in field deployments.
2. Key Advantages & Features
Extreme Environment Qualification: Tested and certified to perform reliably under intense vibration, thermal cycling, and exposure to dust, moisture, and chemicals typical of military ground operations.
High-Efficiency Coalescing Media: Utilizes a multi-layer, hydrophobic/oleophobic media pack designed to achieve high separation efficiency for sub-micron liquid droplets, effectively protecting downstream components from corrosion, emulsification, and lubricant dilution.
Extended Service Life & Robust Construction: Built with durable housing materials (e.g., coated steel or anodized aluminum) and high-capacity media to withstand extended duty cycles and abrasive contaminants, reducing maintenance frequency.
Sealed & Interchangeable Design: Features reliable sealing systems and standardized interfaces to ensure leak-free operation and full interchangeability across all platforms compliant with the MIL-PRF-6-559 specification.
Broad Fluid Compatibility: Engineered for use with a range of operational fluids including diesel (JP-8, F-34), hydraulic fluids, lubricants, and compressed air in vehicle systems.
3. Primary Application Fields
Combat & Tactical Vehicles: Integrated into engine air intake systems, fuel filtration assemblies, crankcase ventilation systems, and hydraulic circuits of armored vehicles, tactical trucks, and mobile artillery platforms.
Military Engineering & Support Equipment: Used in hydraulic and fluid systems of bulldozers, recovery vehicles, mobile bridges, and other engineering assets operating in debris-laden and wet environments.
Field Power Generation: Protects the air and fuel systems of diesel generators and auxiliary power units (APUs) that supply electricity to field camps, command posts, and communications equipment.
Logistics & Maintenance Vehicles: Installed in fuel tankers, hydraulic service trucks, and mobile workshops that support fleet operations and maintenance in deployed locations.
Amphibious & Coastal Platforms: Employed in the engine compartments and fluid systems of landing craft and other military marine equipment where exposure to saltwater and humidity is prevalent.
4. Common Models:
I-614C5TB
l-622C5TB
l-628C5TB
l-633C5TB
l-638C5TB
l-644C5TB
l-656C5TB
SO-424V5
SO-430V
SO-436V
SO-424V
SO-624VA
SO-630VA
SD-6333A
SO-640V
SO-644V
SO-648V
SD66W5S
SO-644VA5
SO-644V5
SO-648V5
SO-614VA5
SO-623VA5
SO624V5
SO-623VA5
SO624VA5
SO-630PV5
SO636PV5
SO640PV5
SO-644PV5
SO-633VA5
SO-640VA5
SO-644PV5
SO-644V5
SO-640V5
SO-644VA5
SO-644PV5
SO-646V5


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