Hilco Filtration Systems

The PL series (Pleated Cellulose) under the Microgard™ label features a three-layer filtration media construction:

• Outer layer: cellulose media for coarse filtration. 

• Middle layer: glass-media for micro-filtration. 

• Inner layer: cellulose media for support.

Uses controlled-radius pleats, which maximize usable filtration area and dirt-holding capacity, while resisting pleat bunching, distortion and rupture. 

Built with rugged end-caps and center-tubes for durability; typical collapse pressure approx. 100 PSID.

Designed for maximum service temperature up to approximately 250 °F (≈ 121 °C). 

Available in multiple sizes and media grades  depending on application requirements.

High reliability and long-life contamination control owing to the three-layer media design.

Increased dirt-holding capacity (due to pleat geometry design) leads to longer service life between change-outs.

Lower pressure drop relative to less optimized pleat designs, improving filtration efficiency and system performance.

Rugged construction makes it suitable for industrial use and replacement of other brands of cartridges in lube oil / fuel oil applications.

Single-layer, resin-bonded cellulose media in a pleated format — the Safegard series uses a single-ply construction rather than multi-layer media. 

Controlled-radius pleat geometry to maximize usable filtration area, improve dirt holding capacity, and resist pleat bunching, distortion and rupture. 

End-caps and support components: disposable cartridges often feature molded urethane end caps on smaller sizes, with plated metal end caps available on larger sizes. 

Robust construction with typical collapse pressure of about 100 PSID and maximum service temperature of ~250 °F.

Cost-effective: Since it uses a simpler single-ply cellulose media, the Safegard line tends to offer good value for standard filtration applications.

Reliable and effective for many fluid systems: The controlled pleat geometry and proper end-cap support provide performance and service life commensurate with general-filtration needs.

Broad compatibility: Because many variants (#02, #05, #10, #20) exist, the series can accommodate various fluid types, pressures and duty cycles.

Uses advanced synthetic media construction that resists softening and deterioration when exposed to water or humid conditions — enabling reliable performance in wet and dry environments. 

Designed with rigid pleat support structure and dual-screen (or double screened) frames to withstand high cyclic and pulsating flow fatigue. 

Capable of handling industrial conditions: the data indicates 100 PSID collapse strength (or similar ratings) and maximum service temperature around 250 °F in many configurations.

Intended for oil, water-based fluids, and chemical compatible applications — offering versatility in fluid types.

Improved fluid cleanliness: Synthetic media enables higher filtration efficiency and more consistent performance compared to standard cellulose elements, particularly in challenging fluid conditions.

Lower pressure drop and longer life: The rigid pleat structure and robust media help maintain lower differential pressure under load, which can extend service intervals. Water-tolerant: Unlike cellulose media, this synthetic element resists swelling or degradation when exposed to water or high humidity — enhancing reliability in mixed fluid or moisture-challenged systems.

Versatile compatibility: Because it handles both oil-based and water-based fluids/chemicals, one filter line may cover multiple system types, simplifying inventory.

The Hilsorb cartridge is designed for combined water-absorption and particulate removal in one element, offering a means to remove free water plus fine solids from fluids.

Employs a patented four-ply construction (for the PD variant) built for high capacity water and solid removal.

Engineered with low initial pressure drop and high flow rate capability, with the design also featuring an increasing pressure drop when the water-absorbent media nears saturation—giving a sort of “service signal.

Constructed for use with hydraulic, lubricating, insulating and fuel oils where moisture and contamination removal is critical.

Provides extended service life by combining water-absorption and particle filtration in one element—reducing the need for separate components. 

Helps maintain fluid integrity: by removing free water, the filter supports maintaining dielectric strength and preventing corrosion or sludge formation in oils. 

Low initial pressure drop means less system resistance at the beginning of service life, improving system efficiency. The design’s increasing differential pressure as the element becomes saturated gives a built-in indicator of nearing service change.

Provides enhanced system protection by enabling filter placement in high-pressure circuits, safeguarding pumps, valves, actuators and other sensitive components.

The micro-glass media ensures high removal efficiency of fine particles, improving fluid cleanliness and thereby reducing wear and maintenance in hydraulic systems.

Durable construction means longer service life under harsh conditions (high pressure, pulsation, high flow) compared to standard low-pressure filters.

Designed with stacked cellulose paper discs arranged in a “stacked-disc” configuration combined with labyrinth oil channels, delivering depth-filtration and high dirt-holding capacity. 

Built to handle high pressure differentials (∆P) such as those encountered during cold starts or when filtering high-viscosity fluids. 

Available in two variant lines: Saflow™ (DS) and Saflow™ D (DD) cartridges, tailored for different service needs. 

Construction is optimized for rugged industrial conditions, suitable for fluids with higher viscosity or where abrupt pressure changes occur.

Enhanced sealing capability means reduced risk of bypass or leak-path formation, improving fluid cleanliness and system reliability.

O-ring design helps maintain seal integrity under thermal cycling, vibration, or misalignment, leading to longer filter life and fewer maintenance interventions.

The upgrade to O-ring allows better compatibility with demanding fluids (including oils with water content) and environments, increasing service confidence.

Helps restore oil condition by removing acidic compounds and oxidation residues, supporting fluid life extension and equipment protection.

The water-resistant media allows more reliable service in systems that may encounter moisture or carry-over water, reducing risk of media degradation.

By providing both adsorption and neutralisation, the cartridge can reduce the need for frequent oil replacements or full system flushes, thereby lowering operating cost.

Uses activated alumina media designed for adsorption of acids and oxidation by-products in synthetic fluids and petroleum oils. 

The media is water-resistant, making it suitable for fluids that may contain moisture or are in variable-duty environments. 

Designed to neutralize and adsorb strong organic acids, high-molecular-weight sulfonates, resins and asphaltites to restore fluid condition.

Available in multiple sizes and flow-rate options to suit different system volumes and flow demands.

Extended fluid life: By continually removing acid-phosphates and moisture, the cartridge helps maintain fluid in near-original condition, reducing changeout frequency.

Improved equipment reliability: Cleaner, properly conditioned fluid reduces oxidation, corrosion and varnish formation, enhancing component life. 

Ease of implementation: Fits standard housings and comes with durable construction for robust service in demanding environments.

The core of every HILCO oil-mist eliminator system is a highly-developed demister cartridge which uses an inside-out flow path to trap oil droplets and mist from an air or gas stream and return the collected liquid back to the oil reservoir. 

Available in both static (passive) and blower-assisted versions, enabling installations with minimal back-pressure or those requiring active flow balancing/vacuum. 

Engineered to provide high removal efficiencies for oil mist and fine droplets, helping maintain clean air exhaust and reduce oil carry-over, with published efficiency numbers (e.g., 99.97%) in some brochures. 

Constructed for industrial applications in demanding environments — robust design, suitable for oil systems that cannot tolerate back-pressure or traditional mist removal solutions.

Extended fluid life: By reducing acid TAN and removing reactive species, the cartridge helps delay fluid replacement and minimize varnish/sludge formation.

Improved system reliability: Clean fluid with better resistivity and fewer acids helps protect components (pumps, valves, turbines) from corrosion, wear or varnish.

Lower total cost of ownership: Although capital cost may be higher than typical filters, the benefits of less fluid replacement, fewer maintenance events and improved uptime make it cost-effective for demanding systems.

No addition of water or unwanted dust: The “dry” resin is optimized to avoid adding water to the system (versus some older resin technologies) and minimize dust migration.

Designed to coalesce and separate free water and entrained moisture from liquid fuels and oils, improving fluid quality and protecting downstream systems. Manufactured by HILCO (via Hilliard Corporation) with decades of experience in coalescing systems rated for high flow capacities—up to ~1,500 GPM (5,700 LPM). 

Typically installed as part of a coalescer/separator housing or system, often paired with final particulate filtration to restore fluid condition. 

Suitable media and design allow for high efficiency in removing moisture and providing dry, clean fuel or oils—reducing water-related contamination, corrosion, microbial growth, and fouling.

Designed for gas/seal-gas and turbine-oil systems, the HILCO gas coalescing & separator cartridges are built to remove both fine particulates and liquid contamination (water, oil) from gas or vent streams. 

High removal efficiencies: some HILCO filter/separator systems show >99.98% removal of liquid contaminants and 99.99% removal of solids in the 0.3–1 µm range for gas/steam turbine lube oil applications.

Flexible configurations: available in simplex or duplex arrangements, various flow capacities, custom builds for high pressures, high temperatures (some up to ~500 °F / 260 °C) for gas service. 

The cartridge versions are designed to work within HILCO filter/separator vessels or coalescer units — media and cartridge designs are optimized specifically for gas / seal-gas and turbine lube oil coalescing/separating service.

Enhanced safety and reliability: By dissipating static charge within the filter media rather than allowing it to accumulate and potentially discharge, the cartridge helps reduce risk of sparking, equipment damage or fire hazards in fluid systems.

Filtration + static protection in one element: Instead of adding a separate static dissipator, this element combines high-efficiency particulate filtration (via the microglass media) and static mitigation, simplifying system design and inventory.

Flexible specification: Because the anti-static feature is available across the standard media grades, you don’t have to compromise your micron rating or flow performance when adding static control.