Source water • factory services • equipment protection
Water & Utilities Filtration
PARSWOOD™
Water & Utilities / Application guide
Protect the process.
Start with the water.
Follow the water from source to service. Explore ten application routes, identify the filtration duty and compare the evidence needed for a suitable PARSWOOD™ filter selection.
Discuss Your Application ↗Select an application
Different water duties. Different treatment requirements.
Brackish water • seawater • industrial RO
Open recirculating systems • condenser water
Water/glycol circuits • HVAC • process cooling
Steam utilities • industrial boilers • power facilities
Hot return water • steam-system recovery
DI / RO water • laboratory support • sensitive rinsing
Cleaning services • equipment rinsing • ingredient interfaces
Reclaimed water • reuse networks • utility makeup
Source-to-tap systems • treatment-plant support
These are representative application routes, not customer case studies or complete plant designs. Product links identify candidates for technical review, not verified interchangeable replacements or complete treatment systems.
Particle filtration / qualified filtration dutyProcess, treatment or storageVerification or decision
Match the treatment to what is in the water.
Suspended particles
Sediment, debris and corrosion solids require a defined particle-removal target. Compare the retention test, flow capacity and solids loading.
Dissolved constituents
Salts, hardness and dissolved chemicals need appropriate treatment such as RO, ion exchange or contaminant-specific adsorption. A general sediment cartridge does not provide these functions.
Microbiological quality
Use a documented treatment strategy and suitable verification. A fine micron label or antibacterial material description does not establish pathogen removal.
Source water • factory services • equipment protection
Incoming & service water
Seasonal solids, corrosion debris and changing demand can affect a plant water supply. Establish the intended use before selecting treatment: equipment service water and ingredient water need different acceptance criteria.
Representative process mapRead in numbered order
- 01Source assessmentCheck seasonal feed quality
- 02Bulk treatmentScreen, clarify or use membrane pretreatment as required
- 03Particle controlPolish an adequately pretreated feed
- 04Use-specific treatmentAddress remaining chemistry or microbial needs
- 05Storage & distributionMaintain the intended water quality
- 06Receiving processVerify quality at the point of use
Filter waste and upstream treatment residuals leave through controlled waste-handling routes. This is a representative route; primary treatment depends on the source.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Feed loading | Keep excessive solids away from disposable polishing elements. | Compare feed variation and existing pretreatment with the replacement frequency. |
| Polishing | Manage the specified particle burden. | Evaluate high-flow, pleated PP, melt-blown or bag formats for the selected duty. |
| Acceptance | Check more than visual clarity. | Set a receiving-water specification and a sampling point. |
Process information to review
Source and analysis; peak/normal flow; turbidity and suspended solids; particle sizes; temperature; available pressure; intended water use.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Brackish water • seawater • industrial RO
RO pretreatment & desalination
The final cartridge stage protects an RO system from particulate carryover. It is not a substitute for a feed-water programme that addresses colloids, scaling, oxidation and biological fouling.
Representative process mapRead in numbered order
- 01Source pretreatmentChoose bulk treatment from feed analysis
- 02Feed conditioningControl relevant scaling and oxidant risks
- 03Guard filtrationApply the RO supplier’s particle specification
- 04Feed acceptanceVerify required feed limits before release
- 05High-pressure ROSeparate permeate from concentrate
- 06Permeate treatmentFinish water for its intended use
RO concentrate → designated concentrate handling. Chemical injection locations and final filter position must follow the engineered system design; this overview does not fix every dosing point.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Guard filter | Intercept residual particles before the high-pressure pump. | Review an exact pleated PP or high-flow model against the RO supplier’s requirement. |
| Feed checks | Identify fouling risk and adverse chemistry. | Track the specified SDI, turbidity, oxidant and chemistry limits; SDI is an index, not a cartridge micron rating. |
| Operation | Recognize upstream deterioration. | Trend filter pressure difference and RO performance; investigate unusually short cartridge life. |
Process information to review
Complete feed analysis; membrane model; specified feed limits; antiscalant/dechlorination programme; flow and temperature; current element drawing; cartridge life.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Open recirculating systems • condenser water
Cooling-tower side-stream filtration
Airborne debris and corrosion solids can accumulate in an open cooling circuit. A side-stream filter treats a portion of circulating water; the main cooling circuit continues operating in parallel.
Representative process mapRead in numbered order
- 01Basin / loop take-offDivert a designed portion of circulating water
- 02Coarse separationUse where debris or dense solids warrant it
- 03Side-stream filterCapture the selected suspended solids
- 04Performance checkMonitor flow and filter pressure difference
- 05Return connectionReturn filtered water to the circuit
- 06Cooling circuitContinue circulation through the plant
Return ↺ basin / loop. Makeup replaces losses; controlled blowdown manages concentration. Solids filtration does not replace corrosion, scale or microbiological treatment.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Technology choice | Match removal method to the solids. | Compare disposable elements with automatic screen, separator or media-filter options. |
| Candidate duty | Treat a suitable, manageable solids load. | Review bag or high-flow formats; element consumption matters to operating cost. |
| Verification | Check the operating circuit. | Compare suspended solids and maintenance burden while retaining the water-treatment programme. |
Process information to review
Loop volume; circulation and side-stream flows; solids distribution; chemistry; biocide compatibility; disposal route; maintenance access.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Water/glycol circuits • HVAC • process cooling
Closed-loop cooling & chilled water
A closed cooling loop has different contamination and makeup behaviour from an evaporative tower. Assess construction debris and corrosion products without compromising the coolant chemistry or the circulation required by the equipment.
Representative process mapRead in numbered order
- 01Coolant assessmentIdentify water/glycol and additives
- 02Designed loop branchMaintain equipment circulation requirements
- 03Debris managementUse appropriate initial cleanup
- 04Particle filtrationSelect compatible media and seals
- 05Return to loopRestore the filtered branch flow
- 06Operating reviewCheck fluid condition and equipment response
Filtered branch ↺ closed loop. The heat exchanger removes heat; a particulate filter does not restore exhausted inhibitor or correct an unsuitable glycol concentration.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Fluid review | Account for formulation and temperature. | Use actual coolant properties for compatibility and pressure-loss assessment. |
| Particle control | Capture unwanted solids. | Bags or PP cartridges are candidates only after fluid and equipment review. |
| Hydraulics | Avoid starving the receiving equipment. | Check pump margin and clean-to-loaded element pressure loss. |
Process information to review
Coolant formulation and concentration; minimum/maximum temperature; pressure; equipment flow limits; inhibitor programme; measured contamination.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Steam utilities • industrial boilers • power facilities
Boiler makeup-water pretreatment
Particle filtration is one part of boiler makeup preparation. Dissolved hardness, salts, silica and gases need treatment appropriate to the boiler and steam service.
Representative process mapRead in numbered order
- 01Incoming makeupCharacterize the source
- 02Particle pretreatmentProtect downstream treatment equipment
- 03Dissolved-species controlSoftening, RO or demineralization as specified
- 04Makeup acceptanceCheck the boiler-specific requirements
- 05Feedwater preparationCombine accepted streams; condition and deaerate as designed
- 06Boiler supplyMaintain the approved chemistry programme
Qualified condensate return → feedwater preparation. RO reject, regenerant and boiler blowdown have separate handling routes. This map is not a steam-pressure piping design.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Pretreatment | Reduce solids loading before the makeup plant. | Review water-rated PP or high-flow candidates for the actual inlet conditions. |
| Chemistry | Meet dissolved-contaminant targets. | Particle cartridges do not replace softeners, RO, ion exchange or deaeration. |
| Boundary | Separate cool makeup from hot feedwater. | Do not extend a makeup-filter selection to hot feedwater or steam service. |
Process information to review
Boiler requirements; makeup analysis and flow; return-condensate proportion; treatment sequence; inlet temperature; cleaning conditions.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Hot return water • steam-system recovery
Condensate return & corrosion-product control
Returning acceptable condensate conserves treated water and heat. Contamination can include particles or dissolved process leakage; particle removal alone cannot establish that a return stream is suitable.
Representative process mapRead in numbered order
- 01Condensate collectionKeep identifiable return streams
- 02Quality monitoringDetect relevant contamination
- 03Return decisionDivert unacceptable streams for investigation
- 04Qualified treatmentParticle removal or polishing if designed
- 05Return verificationConfirm acceptance after treatment
- 06Feedwater systemReturn only acceptable condensate
Failed quality check → isolation / diversion, not automatic return. Dissolved contamination needs a suitable treatment or rejection decision; it cannot be assumed removed by the particulate stage.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Monitoring | Find contaminated return streams. | Define chemistry and sampling with the steam-system team. |
| Equipment selection | Handle actual thermal and pressure conditions. | Request an application-specific review; no standard catalogue cartridge is preselected here. |
| Release | Protect the receiving feedwater system. | Confirm the agreed quality criteria rather than relying on a clear appearance. |
Process information to review
Operating and upset temperature/pressure; dissolved and suspended contamination; condensate chemistry; allowable materials; existing treatment and diversion strategy.
PARSWOOD™ product candidates
No standard catalogue replacement is established for this duty. Submit the actual service conditions for review.
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
DI / RO water • laboratory support • sensitive rinsing
Purified-water generation & distribution
Purified water combines several treatment functions. Particle control, ionic purity, organic content and microbiological quality are separate requirements, and the distribution system can affect water after generation.
Representative process mapRead in numbered order
- 01Pretreated feedProtect the purification equipment
- 02RO generationProduce water for further purification
- 03Purity finishingDI / EDI and other specified treatment
- 04Protected storageMaintain the required water quality
- 05Distribution / useInclude qualified final barriers where required
- 06Quality verificationTest the parameters relevant to use
Distribution return ↺ protected storage where a recirculating design is used. RO concentrate and regeneration wastes remain separate. Final barriers and monitoring points depend on the validated system.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Front end | Manage source-water particles. | Review PP or high-flow candidates only in the compatible feed-water portion. |
| High-purity boundary | Limit contamination introduced by components. | Confirm extractables, sanitization compatibility and quality documentation. |
| Final water | Verify the complete specification. | Conductivity alone does not demonstrate microbial or organic quality. |
Process information to review
Required water quality; feed analysis; demand profile; storage/loop design; sanitization method; conductivity/resistivity, organic and microbial criteria where relevant.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Cleaning services • equipment rinsing • ingredient interfaces
Wash, rinse & plant process water
A water stream used to remove dirt may not meet the specification for final rinsing or product contact. Treat these as separate duties, with treatment and sampling chosen for each use.
Representative process mapRead in numbered order
- 01Defined water supplyIdentify wash, rinse or contact duty
- 02Particle prefiltrationReduce incoming sediment
- 03Additional treatmentAddress chemistry, taints or microbes as needed
- 04Hygienic deliveryPreserve the required quality
- 05Point of useApply water to the defined operation
- 06VerificationCheck water and process acceptance
Used wash water → effluent treatment or a separately designed recovery route. A final rinse is not automatically supplied by untreated wash-water recirculation.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Particles | Protect nozzles and downstream treatment. | Consider PP cartridges or high-flow formats for the specified water duty. |
| Contact quality | Meet the process-specific requirement. | Obtain relevant contact documentation and performance evidence. |
| Microbial needs | Distinguish prefiltration from a final barrier. | Select any microbial stage from validated retention and integrity evidence, not pore size alone. |
Process information to review
Use category; incoming analysis; final rinse target; flow profile; storage conditions; cleaning/disinfection programme; documentation needs.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Reclaimed water • reuse networks • utility makeup
Treated-effluent polishing & non-potable reuse
Reuse quality is determined by both the source stream and its destination. A cartridge polishing stage belongs after suitable bulk treatment; it is not a standalone treatment plant for raw wastewater.
Representative process mapRead in numbered order
- 01Collected sourceSeparate and characterize the stream
- 02Bulk treatmentApply required physical / biological / chemical processes
- 03Solids polishingUse media, membranes or cartridges as appropriate
- 04Further treatmentAdd chemistry and microbial control to suit use
- 05Acceptance & storageVerify and preserve the required quality
- 06Dedicated reuseDeliver to the approved non-potable duty
Residuals / rejects → designated treatment or disposal. Off-specification water → hold or retreat. Cross-connections and reuse identification require project-specific control.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Loading | Protect polishing elements. | Assess residual suspended solids after primary treatment. |
| Polishing choice | Meet the receiving utility specification. | High-flow or pleated PP are candidates for suitable pretreated water. |
| End-use verification | Confirm suitability for the destination. | Review dissolved constituents and microbiological targets as well as clarity. |
Process information to review
Source/process history; treated-effluent analysis; destination; peak flow; treatment variability; residual chemicals; hold/diversion arrangement.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Source-to-tap systems • treatment-plant support
Municipal & drinking-water interfaces
Drinking-water treatment is a coordinated system of source protection, treatment and distribution management. A general-purpose filter listing cannot establish a complete drinking-water treatment claim.
Representative process mapRead in numbered order
- 01Protected sourceCharacterize hazards and variability
- 02Selected treatmentApply a source-specific treatment train
- 03Qualified filtrationDemonstrate performance for the intended duty
- 04Disinfection strategyProvide the required microbial control
- 05Distribution protectionPreserve quality through storage and delivery
- 06Ongoing verificationMonitor treatment and delivered water
Treatment residuals and backwash follow approved handling routes. This diagram shows functions; the actual plant may place several filtration and disinfection barriers at different points.
Conceptual treatment logic. Pumping, valves, controls and protective devices are not fully shown. Not an installation drawing.
Filtration stages & selection
| Stage | Purpose | Approach to evaluate |
|---|---|---|
| Support duties | Define the cartridge’s exact role. | Review sediment-preconditioning candidates without claiming an overall potable-water approval. |
| Evidence | Match claims to the exact model. | Request applicable drinking-water material and performance certifications. |
| Whole system | Maintain source-to-tap protection. | Treatment design and acceptance remain with the responsible utility and qualified team. |
Process information to review
Source and hazard assessment; applicable project requirements; intended filtration role; verified model certifications; monitoring and maintenance plan.
PARSWOOD™ product candidates
Relevant documents & trial evidence
Request the selected element’s retention test, flow/pressure-loss data, full wetted materials, seal details, temperature and differential-pressure limits, cleaning compatibility and relevant contact documentation. Pair these with the receiving equipment’s water-quality specification.
Agree feed and outlet sampling, flow, pressure difference, useful throughput and replacement criteria before trial. A product page is not a substitute for missing grade-specific documentation.
Product fit / evidence review
PARSWOOD™ candidates for selected water duties
Melt-blown PP cartridges
General sediment-loading duties and staged water prefiltration.
The catalogue identifies polypropylene media and water/coolant duties. Its published efficiencies are below 100%; this family should not be described as an absolute barrier.
Confirm the exact grade and pressure/temperature envelope. Do not transfer a room-temperature rating to hot condensate or assume compatibility with a complete cleaning formulation.
View product specifications →Absolute pleated PP cartridges
Defined fine-particle control before RO or a sensitive water user.
The listing describes pleated polypropylene construction, grades from 0.1–50 µm and pre-RO/process-water applications.
Obtain the grade-specific efficiency test and operating limits. A micron rating does not establish salt rejection, disinfection or an integrity-testable microbial barrier.
View product specifications →Size 2 filter bags
Coarse or intermediate particle-control trials in compatible utility liquids.
Size 2 bags are offered in polypropylene, polyester and nylon constructions with different ring options. Retention is nominal.
Confirm basket support, sealing and actual fluid conditions. Bags do not replace bulk clarifiers, self-cleaning screens or certified microbial treatment.
View product specifications →High-flow pleated cartridges
Higher-flow particle control in water pretreatment and selected utility circuits.
The catalogue explicitly lists RO pretreatment, process water and desalination. It contains multiple constructions and formats; identify the exact model before specifying.
Verify retention efficiency, dimensions, flow direction, seal and hydraulic data. An antibacterial description is not evidence of a validated pathogen barrier or potable-water certification.
View product specifications →Process filter housings
A vessel matched to the element, fluid and installation.
The catalogue includes high-flow, multi-cartridge, bag and sanitary housing families.
Review the actual vessel drawing, pressure rating, seals, corrosion resistance, drain/vent arrangements and applicable documentation. The family name alone is not evidence of a suitable pressure vessel or hygienic installation.
View product specifications →Prepare a useful application review
Provide a water analysis, intended use, flow profile, service conditions and the installed element or housing drawing. The linked catalogue pages do not establish availability of every required certificate or validation report.
Related applications
Steam, compressed air, tank vents and critical high-purity final barriers need purpose-designed equipment. This guide does not present general liquid cartridges as substitutes for those services.