Industrial Duplex Filters
HILCO Duplex Filter Housing Systems
Continuous Filtration Through Duplex System Design
HILCO industrial duplex filters are engineered to provide continuous, uninterrupted fluid filtration during cartridge changeouts, helping maintain fluid cleanliness, protect critical equipment, and minimize operational downtime.
Available in standard and custom-engineered configurations, HILCO duplex filter systems provide reliable particulate filtration and, with appropriately selected cartridges, moisture removal for lubricating oils, hydraulic fluids, and other industrial fluids.
Designed for both small and large liquid reservoirs, these systems offer single or multi-cartridge configurations to meet varying capacity and performance requirements. Paired with the HILCO transfer valves, duplex vessels provide a distinct operational advantage over simplex filter designs.
HILCO Duplex Filters Key Features:
ASME Code and Non-Code Vessels
Can be built and stamped to ASME Code requirements or designed to ASME Code without stamping.
Flexible Vessel and Flow Configurations
Available in a wide range of configurations, including inside-out or outside-in flow paths, to accommodate specific requirements.
Wide Range of Compatible Cartridges
Units can be built to utilize a wide range of HILCO cartridge designs based on required filtration efficiency, fluid characteristics, and industry-specific needs.
Integrated Transfer Valve Options
HILCO transfer valves provide reliable, low-pressure-drop fluid transfer. Available in welded-in designs to minimize potential leaks or bolt-in configurations.
FILTRATION EXPERTISE
HILCO’s Engineered Duplex Filtration Systems for Continuous Operation
Since 1915, HILCO has provided industrial filtration solutions trusted by OEMs and end users worldwide. Backed by extensive filtration expertise and in-house manufacturing capabilities, HILCO develops standard and custom-engineered duplex filtration systems for demanding applications.
How Duplex Filter Housing Systems Work
Unlike simplex filters, HILCO duplex filtration systems use two filter housings connected through a transfer valve arrangement. Fluid flow can be redirected between housings, allowing operators to replace cartridges in one duplex filter housing while maintaining continuous filtration through the other.
Benefits of Continuous Duplex Filtration
HILCO duplex filtration systems help maintain fluid cleanliness, protect critical equipment, and improve operational efficiency through several key benefits:
Reduced Downtime and Maintenance Costs
Minimize production interruptions and simplify routine maintenance by allowing cartridge replacements without shutting down critical equipment.
Extended Equipment Life
Consistent contamination control helps reduce premature wear on bearings, hydraulic components, and other sensitive equipment, supporting longer service life.
Reliable Performance in Demanding Environments
Heavy-duty construction and engineered vessel designs support dependable filtration under challenging industrial pressures, flow conditions, and operating environments.
Greater Maintenance Flexibility
Operators can service individual filter housings without shutting down the entire system, making routine maintenance easier to schedule and perform.
Industries
Industrial Duplex Filtration Systems Trusted Across Critical Applications
HILCO duplex filter systems support continuous fluid filtration in industrial environments where equipment reliability, contamination control, and uninterrupted operation are essential, including:
WHY HILLIARD
Why Industrial Companies Choose Hilliard To Keep Their Systems Running
Application-Focused Engineering
HILCO engineers standard and custom duplex filtration systems around specific fluid properties, filtration requirements, operating pressures, and flow conditions.
Flexible Manufacturing Capabilities
As an experienced duplex filter manufacturer, HILCO offers in-house manufacturing capabilities and an accredited weld shop to support custom filter vessels, transfer valve configurations, and a wide range of materials and construction requirements.
Quality You Can Count On
ISO 9001:2015-certified manufacturing, documented quality processes, and available ASME Code construction support consistent product quality and dependable performance.
Support Beyond the Product
HILCO provides engineering assistance, replacement filter cartridges, testing, and technical support to help customers maintain fluid cleanliness and long-term filtration performance.
Browse Categories
Products Supporting Critical Industrial Applications
Beyond duplex filter systems, HILCO offers a broad range of filtration equipment, replacement cartridges, transfer valves, and fluid conditioning solutions designed to remove contaminants, maintain fluid cleanliness, and protect critical industrial equipment.
Filter Equipment
Complete filtration, separation, and fluid conditioning systems for industrial applications.
Filter Cartridges
High-performance filtration media for contamination control and fluid cleanliness.
Valves
Industrial valve technologies for fluid isolation, flow diversion, and process control.
Drivetrain
Mechanical drivetrain systems for power transfer, traction control, and variable speed operation.
Motion Control
Clutch and torque limiting technologies for controlled power transmission and equipment protection.
Engine Starters
Electric, hydraulic, and pneumatic starting systems for industrial engines and turbines.
Industrial Braking Systems
Industrial braking technologies for stopping, holding, positioning, and controlled deceleration.
Engineered Duplex Filtration Systems Built Around Your Application
Continuous Filtration
Contamination Control
Equipment Protection