high-efficiency diesel fuel coalescing system by Kaydon Filtration

Diesel Purification

With decades of expertise in fuel filtration, Kaydon Filtration delivers advanced solutions that deliver clean, water-free fuel to critical equipment in demanding environments. Our advanced systems are trusted worldwide to protect engines, reduce downtime, and ensure reliable performance—no matter the application.

Modern diesel engines require fuel that meets the highest standards for cleanliness and dryness. Even small amounts of water or particulate contamination can cause injector fouling, corrosion, and costly equipment failures. 

Kaydon’s diesel fuel purification solutions are engineered to remove water, sediment, and debris—exceeding the latest ASTM and OEM requirements for fuel quality. 

Kaydon MS diesel purification unit for industrial fuel systems
Kaydon diesel purification filter elements and cartridges

Clean diesel reduces the risk of unexpected breakdowns and ensures critical equipment runs when it’s needed most.

By eliminating contaminants that cause corrosion and wear, clean diesel extends the life of fuel system components and reduces the frequency and cost of repairs and maintenance.

Icon: Factory clock symbolizing reduced downtime

Clean diesel enables more complete combustion, resulting in better fuel economy, more power, and smoother equipment operation—saving money on fuel and boosting productivity.


851E Series fuel/water separator using coalescing technology

851E Series 

Kaydon’s 851E filters utilize advanced coalescing technology to remove water and harmful particulates, ensuring delivery of clean diesel fuel and preventing costly damage and downtime. By efficiently eliminating contaminants, they extend component life and maintain diesel equipment performance—ideal for avoiding revenue loss from fuel-related failures.

MS-XX-CG Series diesel purification system with high flow capacity

MS Series

The MS Series Recirculation Skid combines particulate removal and water separation to remove 100% of damaging water and maintain fuel cleanliness far exceeding industry standards.
This packaged solution uses an integrated pump to continuously polish bulk storage tanks, ensuring fuel life and protecting critical engine components.

Particulate contamination puts diesel equipment at risk of breakdowns and costly repairs.
Advanced filtration protects vital components, ensuring consistent performance and maximum up-time. 

VKS Series fuel filter vessels for industrial diesel purification

Designed and built to ASME Section VIII standards, the VKS fuel filtration filter assemblies provide rugged, code-compliant filtration performance for applications requiring certified pressure vessels. Ideal for regulated environments, it includes inlet/outlet gauges, a Coast Guard-compliant configuration, and ships with a high-efficiency Kaydon filter element.

V-618 and V-636 filter vessels with swing eye-bolt lid design

The V particulate vessels offer the same dependable filtration performance in a streamlined, non-code-stamped design that’s stocked for quick delivery.
Built from carbon steel with a compact footprint, it’s an excellent choice for cost-sensitive projects where ASME certification is not required.





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