Hellan-Denco Fluid Systems is a leader in designing and manufacturing custom fluid management solutions, including oil recirculation, grease systems, lubrication, water cooling, and self-cleaning strainers. With over 40 years of expertise, Hellan’s On-Line Cleanable Strainers provide reliable, uninterrupted service for the U.S. Naval Fleet, offering minimal maintenance, no backflushing, and rapid cleaning cycles. Partnering with European submarine manufacturers, we also develop advanced in-line cleanable strainers for next-gen submarines. Trusted globally, we offer high-performance filtration, cooling systems, and complete project execution—from design to long-term support—ensuring optimal performance for marine and industrial applications.