The Y.4-559/5 Filter-Coalescer Element is a high-performance, replaceable cartridge designed for the efficient removal of immiscible liquids (typically aerosols and fine droplets of oil) from compressed air or gas streams. Its core function is to coalesce these minute contaminants into larger droplets that can be drained away by gravity, thereby delivering exceptionally clean, dry air downstream. Manufactured in strict compliance with the military performance specification, this element ensures reliability in critical applications. It typically features a multi-stage construction with a graded-density media pack, often incorporating glass micro-fibers or specialized polymers, housed within a corrosion-resistant shell (e.g., aluminum or stainless steel). Its performance is characterized by high removal efficiency (>99.9% at 0.1 micron), low pressure drop, and a high dirt-holding capacity.
Filtration Efficiency :
≥ 99.9% for 0.1 micron aerosols and particles (by mass)
Initial Pressure Drop :
< 1.5 psi (0.1 bar) at rated flow
1. Product Concept
The Y.4-559/5 specifies a high-performance, standardized filter-coalescer element designed for the purification of compressed gases, primarily air. Its core concept is the physical separation of liquid contaminants—specifically, emulsified aerosols and fine droplets of oil and water—from the gas stream. Unlike simple particulate filters, a coalescer operates by causing these sub-micron liquid droplets to merge (coalesce) on a specialized medium into larger drops. These enlarged drops are then separated from the flow by gravity and ejected from the system, resulting in exceptionally clean and dry compressed air. This product embodies a military-grade solution where reliability, performance verification, and interchangeability are paramount.
2. Key Advantages & Features
Guaranteed Performance & Reliability: Compliance with the MIL-PRF (Performance Specification) ensures the element meets stringent, verified criteria for efficiency, construction, and material integrity, providing unmatched confidence in critical operations.
High-Efficiency Coalescing: Utilizes a multi-stage, graded-density media pack (often made of glass microfibers or advanced polymers) to achieve ultra-high removal efficiency (>99.9%) of oil and water aerosols down to 0.1 micron.
Optimized System Design: Engineered for low initial and sustained pressure drop, which maximizes energy efficiency and reduces operational costs over the filter's service life.
Robust Construction: Housed in a durable, corrosion-resistant casing (typically aluminum or stainless steel), ensuring mechanical strength and compatibility with various system environments.
Standardized Interface: Designed to be interchangeable with other compliant elements, simplifying procurement, inventory management, and maintenance procedures for systems built to this specification.
3. Primary Application Fields
This product is essential in any industry where clean, dry, and oil-free compressed air is critical for operational safety, product quality, and equipment longevity. Key application areas include:
Aerospace & Defense: For aircraft ground support, cockpit/instrument air, and missile systems where absolute air purity is non-negotiable.
Industrial Manufacturing: Protecting pneumatic controls, robotics, CNC machinery, and paint spray systems from contamination.
Process Industries: In pharmaceutical manufacturing, food & beverage processing (for air in contact with products), and chemical plants.
Critical Instrumentation: Providing clean air supply for analytical instruments, laboratory environments, and sensor systems.
Energy Sector: In natural gas compression and transmission for removal of lubricant carryover.
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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