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Source precision stainless steel (SS304, SS316, SS316L), plastic, high flow and sanitary cartridge filter housings from single to 40+ round capacities in 10" to 40" lengths — Parker, Pall, 3M and Pentair among the brands — from ScientificEdge, India's trusted B2B filtration sourcing partner.
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ScientificEdge supports sourcing and supply of suitable stainless steel, plastic, high flow, and sanitary cartridge filter housings, mounting hardware, and replacement micron filter elements based on design flow rate (LPH / m³/hr), operating pressure (100 to 300+ PSI), cartridge length (10" to 40"), end-cap connection type (DOE, Code 7/226, Code 3/222), material specification, brand preference, technical documentation, and buyer requirements.
Cartridge filter housings are pressure-retaining liquid vessels that hold replaceable micron filter cartridges — melt-blown polypropylene, string-wound, pleated membrane, glass fibre or carbon block. Liquid passing through them loses suspended solids, silt, rust, algae, particles and micro-organisms at ratings from roughly 100 µm down to 0.1 µm.
Selection starts with the liquid, not the flow. Material of construction has to survive the fluid, the temperature and the cleaning regime: SS304 is adequate for clean water duty, SS316 adds molybdenum for chloride resistance, and SS316L drops the carbon so welds do not sensitise — which is why sanitary vessels are almost always 316L. Polypropylene housings suit low-pressure and chemically aggressive service where stainless would be attacked or would simply cost more than the duty warrants.
The cartridge interface is the detail that most often goes wrong at ordering. A double open end cartridge seats between plates under compression, which is simple and cheap. Code 7 uses a 226 O-ring with a locking bayonet and a fin, so the cartridge is positively retained and cannot lift or bypass under flow — which is why absolute-rated and sterilising-grade filtration uses it. Code 3 uses a 222 O-ring with a flat end. These are not interchangeable, and a housing ordered without specifying the code is a housing that may not accept the cartridges you already stock.
Final selection should rest on the allowable differential pressure, the viscosity of the fluid at operating temperature, the pipe connection required — ANSI flange, NPT or BSP thread, or sanitary tri-clamp — and the compliance regime the plant sits under, whether that is ASME Section VIII, FDA-conformant materials, or cGMP documentation.

0.1 – 100 µm
Typical rating range
From coarse pre-filtration down to sterilising grade. The rating belongs to the cartridge; the housing sets how many of them you can run.
Ra ≤ 0.4 µm
Sanitary surface finish
Electropolished SS316L for pharmaceutical duty, with tri-clamp connections and a drainable, dead-leg-free internal geometry.
1 to 40+ rounds
Cartridge capacity
Round count and cartridge length together set the filtration area — a 7-round 40" housing holds the same area as a 28-round 10".
Five classes across the range. Round count and length set the filtration area; material and finish are set by the liquid and the compliance regime.
| Housing class | Typical duty and flow | Key technical features |
|---|---|---|
| Single-Cartridge Housings (10" to 40") | Point-of-use filtration, laboratory polishers and low-flow sampling, roughly 0.5–3.0 m³/hr | Compact SS304, SS316 or plastic bodies with threaded or small flanged connections, usually threaded-closure lids |
| Multi-Cartridge Housings (3 to 12 round) | Commercial RO skids, bottled water and chemical clarification, roughly 5–30 m³/hr | Standard industrial vessels on an internal tube plate, swing-bolt or V-band closure, ANSI flanged or threaded connections |
| Large Multi-Cartridge Housings (19 to 40+ round) | Large industrial WTP, power plant condensate and refinery utility fluids, roughly 40–150+ m³/hr | Heavy-duty process vessels with davit or hinged lid arrangements, since a lid at this diameter cannot reasonably be lifted by hand |
| High Flow Filter Housings (horizontal / vertical) | High-volume duty where footprint and changeout labour dominate the cost | Large-diameter vessels taking 6-inch High Flow elements, each handling what a bank of standard cartridges would, cutting element count and changeout time sharply |
| Sanitary Electropolished Housings (SS316L) | USP Purified Water, WFI and sterile liquid filtration | Mirror-polished to Ra ≤ 0.4 µm with tri-clamp connections, drain ports and a drainable dead-leg-free geometry, supplied with material and finish documentation |
Indicative class characteristics rather than fixed product models. Flow capacity, rated pressure, permitted temperature, connection sizes, surface finish and code conformity vary by manufacturer and model, and are confirmed against the technical datasheet of the housing quoted. Flow figures assume clean water at ambient temperature; viscous fluids derate substantially.
Every multi-round housing carries a maximum flow figure, and it is routinely read as a recommendation. It is not — it is a hydraulic limit, the point at which velocity through the ports and the vessel becomes unreasonable. Filling a housing to that figure with fine-rated cartridges on anything but clean water produces a filter that blinds in days.
The number that actually governs is flow per 10-inch cartridge equivalent. For fine ratings on water carrying real solids, plan around one gallon per minute per 10 inches of cartridge; for coarse ratings on clean water you can run three to five times that. So a 7-round 40-inch housing is 28 ten-inch equivalents — comfortable at roughly 6 m³/hr of dirty-water fine filtration, and capable of far more on clean duty. Same vessel, same datasheet, four-fold difference in what it should be asked to do.
Judge it on differential pressure across a cycle rather than on day one. A correctly sized housing starts around 0.15 to 0.3 bar clean and is changed out at 1.5 to 2.5 bar, or whatever the O&M manual specifies. If elements are being changed weekly, the housing is undersized or the pre-treatment upstream is failing — and cartridges plus the labour to change them will quickly cost more than the larger vessel would have.
This is also the honest way to compare a High Flow housing against a bank of standard multi-round vessels. High Flow costs more per vessel and usually less per year, because one element replaces dozens and a changeout that took two people an hour takes one person ten minutes. Where changeouts are frequent, that comparison rarely favours the cheaper vessel.
A housing is bought once and refilled for years. These are the lines quoted alongside it, so the vessel and its consumables come from one desk.
Three to forty-plus round vessels on an internal tube plate, in the grade the liquid and the cleaning regime actually require.
Large-diameter vessels for 6-inch High Flow elements, where footprint and changeout labour dominate the running cost.
Hygienic SS316L construction with tri-clamp connections and drainable geometry for PW, WFI and sterile duty.
Low-pressure and chemically aggressive service where stainless would be attacked or is simply more vessel than the duty needs.
PP melt-blown, PES, PTFE and nylon pleated membrane, string-wound and activated carbon, matched to the housing's end-cap code.
Seals in Viton, EPDM, silicone and PTFE, plus the internals that keep cartridges seated and prevent bypass.
The instrumentation that turns a changeout from a calendar task into a condition-based one.
Coarser, higher-dirt-load duty ahead of cartridge filtration, where a bag holds far more solids per rupee.
The liquid sets the material and the seals; the solids load and the changeout economics set the size. These are the duties these vessels are specified into.
The last barrier before the high-pressure pump and the membranes, sized so it is not being changed weekly and instrumented so it is changed on differential pressure.
Electropolished SS316L with tri-clamp connections and Code 7 cartridge retention, where documentation and traceability are part of the specification.
Sanitary construction with FDA-conformant seal materials, cleanable and drainable, sized around clarification rather than sterilisation.
Material and seal compatibility decided against the actual chemistry, since this is where the wrong elastomer swells or dissolves within days.
Sub-micron pleated membrane in low-extractable housings at the end of a UPW train, where cleanliness of the vessel matters as much as the rating.
Large multi-round and High Flow vessels on high-volume duty, where changeout labour on a running plant is the cost that actually bites.
Viscous duty where flow ratings derate sharply and seal selection has to account for hydrocarbons rather than water.
Twelve details decide whether a housing can be quoted on the first pass. The liquid and the end-cap code are the two most often left out, and the two most likely to make a housing unusable.
Liquid type, operating temperature and viscosity — water, chemical, solvent, edible oil or beverage
Design flow rate required, in LPH, GPD or m³/hr
Material of construction preference — SS304, SS316, SS316L or polypropylene
Cartridge capacity or round count — single, 3, 5, 7, 12, 19, 24, 30+ round, or High Flow
Cartridge length requirement — 10", 20", 30" or 40"
Cartridge end-cap style — DOE double open end, Code 7 (226), or Code 3 (222)
Operating pressure rating required — 100, 150 or 300 PSI
Lid closure preference — swing bolts, tri-clamp V-band, or threaded
Pipe connection type — ANSI flange, NPT or BSP threaded, or sanitary tri-clamp
Preferred brand, or the approved vendor list your procurement requires
Delivery location and target delivery schedule
GST, tender or corporate procurement requirement
As a trusted B2B distributor and supplier, ScientificEdge can coordinate technical datasheets, CAD dimensional line drawings, hydrostatic factory pressure test certificates, ASME Section VIII compliance documentation, material mill test certificates (3.1 MTR), and surface roughness test reports where available from the respective manufacturer. Plant engineers are encouraged to share fluid properties during enquiry to verify seal material compatibility (Viton, EPDM, PTFE).
Overall height, footprint, connection centres and lid swing clearance — the last of which decides whether the vessel can actually be opened where you plan to install it.
EN 10204 3.1 mill certificates for the wetted stainless, where the manufacturer issues them for the supplied batch.
Hydrostatic test documentation and surface roughness reports for electropolished sanitary vessels.
End-cap code, length and seal material checked against the cartridges you already stock, before the housing is ordered.
ASME Section VIII code stamping, FDA material conformity and cGMP suitability are attributes of the manufacturer's specific product and its certification scope. ScientificEdge coordinates that documentation where the manufacturer issues it; it does not certify, stamp, test or re-rate vessels, and does not confer compliance. Document availability depends on the manufacturer, the model and the supplied batch. Installation, relief protection and periodic inspection remain the responsibility of the plant owner and their qualified engineers.
Seal material is the compatibility check worth doing every time, because it is cheap to get right and expensive to get wrong. EPDM handles hot water, steam and WFI service well and is attacked by oils and hydrocarbons; Viton is the opposite, excellent on oils and solvents and poor in hot water and steam. A housing ordered with the default elastomer for a duty it does not suit will seal perfectly on the test bench and fail within weeks in service — so state the fluid and the temperature at enquiry rather than the housing size alone.
ScientificEdge supports sourcing and distribution enquiries for stainless steel, plastic, high flow, and sanitary cartridge filter housings and replacement micron filter elements from reputed global and domestic brands, including Parker (domnick hunter), Pall Corporation, 3M (CUNO), Pentair, Eaton, UKL, Shubh, Aventura, and equivalent options, subject to stock availability, buyer specification, technical compatibility, and documentation.
Brand names indicate the sourcing enquiries ScientificEdge can support. They do not indicate authorised distribution, official dealership or an exclusive partnership, and no brand logos are displayed. Series names are the trademarks of their respective owners and are referenced only because buyers and tender documents specify by them. Where an equivalent is offered, round count, cartridge length, end-cap code, pressure rating, connection type and finish are matched — a housing that takes a different cartridge code is not an equivalent, however similar the vessel looks.
The vessel is a one-time cost and the cartridges are a permanent one. Sizing the first correctly is what controls the second.
A supply partner in India for industrial WTP OEMs, EPC contractors, pharmaceutical QA leads and chemical process engineers.
Support sizing vessels on flow per cartridge rather than on the nameplate figure, including clean and changeout differential pressure and cartridge hold-down integrity.
Housings, replacement melt-blown and pleated cartridges, differential pressure gauges and seal kits quoted together, matched on end-cap code.
Coordination of material test certificates, surface roughness reports and pressure test documentation for audits, where the manufacturer issues them.
GST-compliant billing and procurement alignment for private factories and government tenders alike.
Dispatch coordination across Delhi NCR, Gujarat, Maharashtra, Tamil Nadu, Telangana, Karnataka, West Bengal and other industrial corridors.
Fields marked with an asterisk are required. Housing type, round count and cartridge code are what select the vessel; the liquid is what confirms the material and the seals.
ScientificEdge is a B2B distributor and sourcing partner covering housings, replacement cartridges, differential pressure gauges, seal kits and internals from one desk, so end-cap code, seal material and connection type are settled at quotation stage rather than discovered when the vessel is commissioned.
The practical value is in sizing and compatibility: sizing vessels on flow per cartridge rather than on the nameplate figure, checking seal elastomer against your actual fluid and temperature, coordinating CAD drawings, datasheets and material certificates where the manufacturer issues them, and invoicing in the form your procurement or tender process requires.
SS304 is the general-purpose austenitic grade and is adequate for clean water and mildly corrosive duty. SS316 adds roughly two to three percent molybdenum, which markedly improves resistance to chlorides and pitting — the reason it is specified for seawater-adjacent, brine and many chemical services.
SS316L is SS316 with the carbon held low, typically under 0.03 percent. That matters at welds: in standard 316 the heat of welding can precipitate chromium carbides at grain boundaries and leave the weld zone vulnerable to intergranular corrosion. The low-carbon grade avoids it, which is why sanitary and pharmaceutical vessels — heavily welded and repeatedly cleaned — are almost always 316L.
Work in 10-inch cartridge equivalents rather than in vessels. A 7-round 40-inch housing is 28 equivalents; a 12-round 20-inch housing is 24. Then apply a flow per equivalent appropriate to the duty: around one gallon per minute per 10 inches for fine ratings on water carrying real solids, and three to five times that for coarse ratings on clean water.
The vessel's published maximum flow is a hydraulic limit, not a sizing recommendation — it describes the point at which velocity becomes unreasonable, not the point at which filtration works well. Size on the flow per cartridge, then confirm the choice against differential pressure: roughly 0.15 to 0.3 bar clean, changed out at 1.5 to 2.5 bar or as the O&M manual specifies.
A double open end cartridge is a plain cylinder open at both ends, sealed by compression between the housing's tube plate and a hold-down plate, usually with flat gaskets or knife-edge seals. It is simple and inexpensive, and it suits nominal-rated filtration where a small amount of bypass is tolerable.
Code 7 uses a 226 O-ring at one end with a bayonet lock and a fin or spear at the other. The cartridge is positively located and cannot lift, rotate or bypass under flow or during a pressure surge, and the double O-ring seal is far more reliable. That is why absolute-rated, sterilising-grade and validated filtration uses Code 7 or Code 3 rather than DOE. The codes are not interchangeable — a Code 7 cartridge will not seat in a DOE housing, so the code must be stated at ordering.
When flow is high and changeout labour is the cost that actually hurts. A single 6-inch High Flow element does the work of dozens of standard cartridges, so a vessel that would have held forty rounds holds a handful of elements instead, in a smaller footprint.
The economics turn on changeout frequency, not on vessel price. High Flow costs more per vessel and usually less per year: an element change that occupied two people for an hour becomes one person for ten minutes, with far less spent handling and disposing of used cartridges. Where changeouts are infrequent, a standard multi-round housing remains the cheaper answer — the comparison should be made over a year of operation rather than at purchase.
SS316L construction, a mirror-electropolished wetted surface typically at Ra 0.4 µm or better, sanitary tri-clamp connections rather than threads, and an internal geometry that is fully drainable with no dead legs where liquid can stagnate. Vent and drain ports are positioned so the vessel genuinely empties.
The documentation is part of the specification rather than an addition: material mill certificates for the wetted stainless, surface roughness reports, and elastomer certification for the seals. Where the system is hot-water or steam sanitised, the seal material and the whole housing have to be rated for that cycle — which in practice usually means EPDM or PTFE rather than Viton.
Swing bolts distribute clamping load around the flange through several individually tightened bolts, which is what larger diameters and higher pressures require. They open reasonably quickly by hand and are the standard arrangement on industrial multi-round vessels. Above a certain diameter the lid also needs a davit or hinge, because its weight makes hand lifting impractical and unsafe.
A tri-clamp V-band closes in one movement and gives a smooth, crevice-free joint, which is why it dominates sanitary service — but the geometry limits it to smaller diameters and moderate pressures. Choose the closure from diameter and pressure first, then from how often the vessel is actually opened; a housing changed weekly justifies a faster closure than one opened twice a year.
Yes, and cartridges are the larger part of the ongoing enquiry volume on this category. Polypropylene melt-blown, string-wound, pleated membrane in PES, PTFE and nylon, glass fibre and activated carbon block are all supplied, matched to the housing's end-cap code, length and seal material.
For an existing housing, send the vessel make and model along with the cartridge currently fitted — the end-cap code, length and O-ring material, or a photograph of the cartridge ends. Ordering by micron rating and length alone is the usual reason a delivered cartridge will not seat.
Sourcing and distribution enquiries are supported for reputed global and domestic brands including Parker (domnick hunter), Pall Corporation, 3M (CUNO), Pentair, Eaton, UKL, Shubh and Aventura, along with equivalent options.
This is subject to stock availability, buyer specification, technical compatibility and documentation, and does not indicate authorised distribution, official dealership or an exclusive partnership with any brand.
Yes. Dispatch is coordinated across Delhi NCR, Gujarat, Maharashtra, Tamil Nadu, Telangana, Karnataka, West Bengal and other industrial corridors, covering plant, project, pharmaceutical, municipal and institutional sites.
Large multi-round vessels ship crated and need lifting arrangements at site, and electropolished sanitary housings are usually protected and bagged, so confirm site access and handling before dispatch. Lead time is confirmed per line item at quotation stage, since stocked models and made-to-order sanitary vessels differ substantially.
The stage these housings protect, and the components specified alongside them.
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