Application-specific filtration solutions for cooling towers, facility-water systems, coolant distribution units, technology-cooling systems, water pretreatment, and system startup.
Data center cooling infrastructure may include cooling towers, condenser-water systems, chilled-water loops, facility-water systems, coolant distribution units, and technology-cooling systems. Each loop has different fluids, operating conditions, particle-control requirements, and pressure-drop limitations.
Effective filtration begins by identifying the equipment being protected, the smallest fluid passages, the type and concentration of contaminants, the water or coolant chemistry, and the allowable differential pressure.
Strainrite works with data center operators, equipment manufacturers, engineering firms, and service providers to select the appropriate filter media, micron rating, surface area, housing configuration, and change-out strategy for each application.
01
Open cooling towers can introduce airborne dirt, debris, corrosion products, and organic material into recirculating water. Suspended solids can accumulate within heat exchangers, strainers, pumps, valves, and piping, affecting heat transfer and increasing maintenance requirements.
Side-stream filtration continuously treats a portion of the recirculating flow to reduce suspended particulate and support the broader water-management program. It does not remove dissolved solids or replace required scale, corrosion, or microbiological treatment.
Potential Strainrite solutions include:
SPMF, Accu-Rite, Hi-Pro Micro filter bags for higher-efficiency particulate control
Micron-Rated Felt and Mesh filter bags for coarse debris and higher solids loading
SRID, SRHD, and SRMB housings selected according to flow, pressure, loading, and operating requirements
The appropriate filtration rate and system size depend on the cooling-tower volume, contaminant load, water quality, operating conditions, and treatment objectives.
02
Closed facility loops can accumulate suspended corrosion products, construction debris, pipe scale, and other particulate over time. These contaminants may foul chillers and heat exchangers, increase wear on pumps and valves, or collect in areas of reduced flow.
Full-flow or side-stream filtration can help manage the particulate load when coordinated with the system’s hydraulic design and water-chemistry program.
Potential Strainrite solutions include:
MADD MAXX MF polypropylene elements for high-capacity particulate removal
MADD-MAXX GF microglass elements where the media, binder, seals, and fluid chemistry are compatible
SPMF or Hi-Pro Micro filter bags where a bag-filter format best fits the contaminant load and operating plan
Single, duplex, or multi-element housings sized around the required flow and allowable pressure drop
Filter selection should account for system cleanliness, particle-size distribution, corrosion-control chemistry, operating temperature, flow rate, and desired change-out frequency.
03
A liquid-to-liquid coolant distribution unit separates the facility-water system from the technology-cooling system serving cold plates and other IT equipment. Although connected through a heat exchanger, the two loops may have very different filtration requirements.
On the facility side, endpoint filtration can help limit particulate accumulation within the CDU’s plate heat exchanger. Product selection should consider plate spacing, flow, facility-water chemistry, allowable differential pressure, and the CDU manufacturer’s requirements.
On the technology-cooling side, narrow cold-plate channels, quick-connect fittings, manifolds, and heat exchangers can make coolant cleanliness especially important. Filtration must protect these components without creating excessive pressure drop or interfering with required coolant flow.
Potential Strainrite solutions include:
Application-selected large-diameter elements or pleated depth cartridges for CDU primary-side filtration
Application-selected Clarity pleated cartridges for finer particulate control within compatible technology-cooling systems
MADD-MAXX elements as prefilters or primary filters where their retention, flow, materials, seals, and coolant compatibility meet the system requirements
The final filter media, micron rating, and configuration should be selected according to coolant chemistry, component clearances, flow requirements, allowable pressure drop, and the equipment manufacturer’s specifications.
04
Incoming water may require particulate pretreatment before reverse osmosis, deionization, cooling-tower makeup, humidification, or adiabatic-cooling equipment. Effective pretreatment can help protect downstream equipment and reduce the particulate load entering the broader water-treatment system.
Potential Strainrite solutions include:
Filter bags for coarse particulate removal and higher solids loading
MADD-MAXX elements for additional filtration capacity and extended service life
Clarity depth cartridges for finer downstream polishing
The treatment approach should be based on feed-water quality, downstream equipment requirements, desired water quality, flow rate, and the other treatment technologies included in the system.
05
The technology-cooling system carries coolant from the CDU to cold plates and other liquid-cooled IT equipment. Narrow fluid passages, plate heat exchangers, manifolds, quick-connect fittings, and other particle-sensitive components make coolant cleanliness an important part of reliable system operation.
Particulate can enter the loop during manufacturing, installation, commissioning, maintenance, or the addition of new equipment. Properly selected filtration can help control these contaminants without creating excessive pressure drop or restricting the coolant flow required by the IT equipment.
Potential Strainrite solutions include:
Application-selected Clarity pleated membrane cartridges for fine particulate control. A MADD MAXX element may serve as a prefilter or primary filter only where its rating, flow, pressure drop, materials, and coolant compatibility satisfy the system specification.
06
New or modified piping systems can contain weld debris, pipe scale, dirt, fibers, sealant, and other construction-related contaminants. If these materials remain in the system during startup, they may accumulate in strainers, plate heat exchangers, valves, quick connectors, and cold plates.
A staged filtration plan can support system flushing and turnover by establishing initial filter ratings, allowable differential-pressure limits, change-out criteria, cleanliness objectives, and the transition to the permanent operating filter.
Potential Strainrite solutions include:
Coarse filter bags for initial debris removal
MADD-MAXX MF or MADD-MAXX GF elements for higher-capacity cleanup where compatible
Finer cartridges or elements for final cleanup and transition to normal operation
The filter sequence should be selected around the expected debris load, system volume, flushing velocity, component clearances, and required turnover condition.
Cooling Towerd and Condenser-Water Filtration
Coolant Distribution Units and Technology-Cooling Systems
Direct-to-Chip and TCS Secondary-Loop Filtration
Strainrite has designed and manufactured liquid-filtration products since 1978. As a family-owned, U.S.-based company with manufacturing in Auburn, Maine, Strainrite provides direct access to the people who engineer and build the filtration solution.
Domestic manufacturing supports responsive quotation, production, and replenishment. Current lead time should be confirmed for the selected media, vessel, materials, and custom options.
Strainrite helps define flow, chemistry, temperature, target particle size, clean and terminal differential pressure, vessel arrangement, seal materials, and changeout strategy. Basis-of-design language and application-specific submittal support are available.
The portfolio can be evaluated for point-of-use, side-stream, full-flow, single, twin, duplex, and multi-basket service. Final sizing accounts for the complete hydraulic and operating requirements, not flow alone.
High-Efficiency Filter Bags
SPMF, Accu-Rite, and Hi-Pro Micro provide layered, high-efficiency, or absolute-rated options for particulate control. Selection depends on required retention, loading, fluid compatibility, and housing seal.
Large-Diameter, High-Capacity Elements
MADD MAXX MF and MADD MAXX GF provide high-capacity, inside-out filtration in application-specific polypropylene or microglass configurations. Media, binder, seal, and coolant compatibility must be confirmed.
Clarity Pleated and Membrane Cartridges
Clarity cartridges and capsules include pleated depth and membrane configurations for fine liquid filtration. The exact cartridge, rating, end configuration, and seal material should be matched to the equipment and fluid specification.
Engineered Housings and Vessels
SRL low-flow vessels, SRID industrial-duty vessels, SRHD heavy-duty vessels, SRMB multi-basket vessels, and cartridge housings support low-flow, single, twin, duplex, and higher-capacity configurations. SRID and SRHD use a radial O-ring basket seal designed to prevent bypass associated with basket movement; operating capacity depends on media, fluid properties, contaminant loading, and allowable differential pressure.
Cooling towers are the unsung heroes of data centers, dissipating the heat generated by servers through water evaporation to prevent overheating, downtime, and equipment failure. This white paper explores how liquid filtration protects cooling tower performance, reduces maintenance, and supports long-term efficiency and sustainability.
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