Duplex Filters
HILCO Duplex Vessels deliver versatile, high performance filtration for both particulate and moisture removal, with configurations tailored to your specific application through optimized cartridge selection and design.
HILCO offers a comprehensive line of cost-effective, heavy-duty portable filtration systems designed to efficiently remove water and particulates from oil, fuel, and other fluids. These units provide industrial customers with an accessible entry point to HILCO’s trusted filtration performance, combining competitive pricing with the reliability of a proven brand.
HILCO has earned this trusted reputation among both Original Equipment Manufacturers (OEMs) and end users worldwide, based on the company’s long legacy of filtration expertise combined with world-class manufacturing capabilities.

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HILCO Duplex Vessels deliver versatile, high performance filtration for both particulate and moisture removal, with configurations tailored to your specific application through optimized cartridge selection and design.
Simplex Vessels are commonly found providing filtration solutions for both small or large liquid reservoirs, and can be built in single or multiple cartridge designs.
Hilliard Brake Systems designs and manufactures industrial braking systems for applications where safety, controlled stopping, holding force, and long-term reliability matter.
Helps protect pumps, valves, actuators, servo controls, and other precision hydraulic equipment from contamination-related wear.
HILCO offers a comprehensive range of seal gas filtration systems engineered to deliver reliable particulate and liquid removal for demanding applications. Each unit is custom designed to meet
Explore Industrial Process Filtration Proucts HILCO has seen many changes since our first oil reclaimer was built in 1925. The problems have become more complicated, and the filtration
HILCO offers a comprehensive line of cost-effective, heavy-duty portable filtration systems designed to efficiently remove water and particulates from oil, fuel, and other fluids.
HILCO’s duplex strainers incorporate a zero-leak transfer valve constructed from wrought materials rather than castings, allowing for superior integrity, as well as the flexibility to weld and modify
BENEFITS
One of HILCO’s defining advantages is a fully integrated design approach: every filtration system features a precisely engineered HILCO vessel paired with a perfectly matched HILCO cartridge, both manufactured at the same facility. This level of control ensures optimal performance, reliability, and consistency. By manufacturing both vessels and cartridges as a complete system, HILCO has not only established the industry benchmark for filtration performance but has continually raised the standard for more than a century.

The right systems for different fluid and gas applications protects industrial equipment by ensuring precision filtration that fits the specific need.
HILCO filtration products are engineered for extended filter element run time and long vessel service life.
Proper filtration technology reduces the risk of unplanned shutdowns in critical equipment.
To ensure the right filtration system for your needs, HILCO offers a wide range of standard products as well as custom-engineered filter products.
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WHY HILLIARD
Over a century of filtration expertise, with custom and standard products engineered to OEM standards— not just setting the bar but raising it.
In-house manufacturing gives Hilliard the flexibility to adapt standard products to new applications and respond quickly to customer needs.
ISO 9001:2015-certified, with strict quality standards backed by industry approvals, including ASME, PED, and API.
A global distributor network, technical support, and HILCO Lab Services keep your systems running long after the equipment is installed.
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Founded in 1905, Hilliard has grown from a one-product business into a global manufacturer serving customers across motion control

Complete filtration, separation, and fluid conditioning systems for industrial applications.

High-performance filtration media for contamination control and fluid cleanliness.

Mechanical drivetrain systems for power transfer, traction control, and variable speed operation.

Clutch and torque limiting technologies for controlled power transmission and equipment protection.

Electric, hydraulic, and pneumatic starting systems for industrial engines and turbines.

Industrial braking technologies for stopping, holding, positioning, and controlled deceleration.
Engineered Filtration Equipment Built Around Your Application