316L industrial filter housing (DOE)
SaniFlow STE-DO
Process filtration with one DOE cartridge, for food, beverage and pharma
- 10″–40″
Metal fabrication plant · Argentina
Sanitary stainless steel filter housings
Sanitary housings for 10″ to 40″ cartridges and for High Flow cartridges, and housings for filter bags, designed and manufactured at our stainless steel fabrication plant in Argentina. Each model is configured with a code: connections, length, gaskets, and accessories.
AISI 304 and 316L stainless steel
SaniFlow
Stainless steel filter housings for pharma, food, beverages and water
SaniFlow is Exova's line of stainless steel filter housings, designed and manufactured at our stainless steel fabrication plant in Argentina. It ranges from mini housings for 2.5″ cartridges to 36-cartridge housings, housings for 6″ High Flow cartridges and housings for 7″ filter bags, with clamp, threaded or flanged connections depending on the model.
Each model's name tells you how it is built. The STE series is AISI 304 polished to Ra ≤ 0.8 µm, for food and beverage; the exceptions are the STE-DO, an industrial housing made entirely of 316L, and the STE-G, a 304 housing for filter bags with an industrial finish or a polished interior. The STU and SNU series are AISI 316L with the interior polished to Ra ≤ 0.4 µm, for pharma and biotech: STU is T-type and SNU is in-line. The suffix gives the capacity: -01, one 2 1/2″ cartridge; -X, 3 to 36 cartridges; -50 and -K, one 5″ or 2.5″ mini cartridge; -DO, one double open end (DOE) cartridge; and -G, one or three 7″ filter bags.
The SaniFlow HF, in AISI 304 or 316L, hold 6″ High Flow cartridges and cover 17 to 250 m³/h recommended per housing, with 1, 3, 4 or 5 cartridges. All models are complemented by accessories sized for each housing: clamps and clamp gaskets, blank end caps, pressure gauges and compound gauges, diaphragm valves and sampling valves.
Which one to choose?
Filtering juices, waters, dairy or beverages with one cartridge
Process filtration with one double open end (DOE) cartridge
High flow of juices, syrups, wine, beer or drinking water
Hundreds of m³/h of process water, cooling water or reverse osmosis pretreatment water
Injection water and brines in Oil & Gas
High solids loads with filter bags: reverse osmosis pretreatment, water and fuels
Filtration of pharmaceutical and biotech liquids with one cartridge
Parenterals, PW and WFI loops, and regulated processes that require a 3.1 certificate and IQ/OQ
Sterile filtration of air and gases, and tank and reactor venting
Venting tanks with hot fluids, with electric or steam heating
Small or medium volumes with 5″ or 2.5″ mini cartridges
304 sanitary filter housing
SaniFlow STE-01
Sanitary liquid filtration in food and beverage production
- 5″–40″
304 multi-element filter housing
SaniFlow STE-X
High-flow sanitary filtration for food, beverages, wine and drinking water
- 10″–40″
304 filter bag housing
SaniFlow STE-G
Bag filtration for high solids loads, in water and fuels
- 17″–32″
High Flow filter housing, 304 or 316L
SaniFlow HF
Housings for 6″ High Flow cartridges, 17 to 250 m³/h recommended per housing
- 20″–60″
316L sanitary mini filter housing
SaniFlow STU-50
Low- and medium-volume filtration of liquids and gases for pharma and biotech
- 2.5″–5″
316L sanitary mini housing for SKN cartridge
SaniFlow SNU-K
316L mini housing for air, gases and liquids in pharmaceutical processes
- 2.5″–5″
316L sanitary filter housing
SaniFlow STU-01
Sanitary liquid filtration in pharmaceutical and biotech processes
- 5″–40″
316L sanitary filter housing for gases
SaniFlow SNU-01
Sterile filtration of air and gases in pharmaceutical processes
- 5″–40″
316L multi-element filter housing
SaniFlow STU-X
High-flow filtration for regulated pharmaceutical and biotech processes
- 10″–40″
Compare the SaniFlow models
| Model | Material | Cartridges | Max. pressure and temperature | Connections | Main use |
|---|---|---|---|---|---|
| SaniFlow STE-DO | AISI 316L | One DOE cartridge, 10″ to 40″ | 7 bar · 90 °C | Clamp 1 1/2″ or female BSP thread 1″ or 2″ | Process filtration in food, beverage and pharma |
| SaniFlow STE-01 | AISI 304 | One 2 1/2″ double O-ring cartridge, 5″ to 40″ | −1 to 10 bar · −10 to 150 °C | Clamp 1 1/2″ or Fafeur 44.5 mm | Food and beverage |
| SaniFlow STE-X | AISI 304 | 3 to 36 cartridges, 10″ to 40″, double O-ring or DOE | 10 bar · −10 to 150 °C | Clamp 1 1/2″ to 3″, DIN 11851, Danish, flange 4″ or Fafeur | Food, beverages, wine and drinking water |
| SaniFlow STE-G | AISI 304 | 1 or 3 filter bags, 7″, 17″ or 32″ long | 10 bar | Flange 2″ or 4″, thread 2″ | Reverse osmosis pretreatment, water and fuels |
| SaniFlow HF | AISI 304 or 316L | 1, 3, 4 or 5 High Flow 6″ cartridges, 20″ to 60″ | 10 bar at 80 °C (design) | SORF ANSI #150 flanges, 3″ to 10″ | Process water, food and beverage, Oil & Gas |
| SaniFlow STU-50 | AISI 316L | One mini cartridge with internal 116 O-ring, 2.5″ or 5″ | −1 to 10 barg · 150 °C | Clamp 3/4″ or 1 1/2″, BSP thread 1/2″ | Liquids and gases in pharma, low and medium volume |
| SaniFlow SNU-K | AISI 316L | One SKN mini cartridge, 2.5″ or 5″ | −1 to 10 barg · 150 °C | Clamp 1 1/2″ | Air, gases and liquids in pharma; optional heating |
| SaniFlow STU-01 | AISI 316L | One 2 1/2″ double O-ring cartridge, 5″ to 40″ | 10 bar · 140 °C | Clamp 1 1/2″ | Pharmaceutical and biotech liquids |
| SaniFlow SNU-01 | AISI 316L | One 2 1/2″ double O-ring cartridge, 5″ to 40″ | 10 barg · 150 °C | Clamp 1 1/2″ | Sterile filtration of air and gases in pharma; PED |
| SaniFlow STU-X | AISI 316L | 3 to 36 cartridges, 10″ to 40″, double O-ring | 10 bar · −10 to 150 °C | Clamp 1 1/2″ to 4″ | Regulated pharmaceutical and biotech processes |
Frequently asked questions
Filter housings: common questions
What is the difference between the STU, SNU, and STE series?
The STU and SNU are made of AISI 316L for pharma and biotech; the SNU-01 is designed for air, gases, and tank venting. The STE-01 and STE-X are made of AISI 304 for food and beverage; the STE-DO is made of 316L for one double-open-end cartridge, and the STE-G, in 304, holds one or three 7″ filter bags.
What surface finish do they have?
Mechanically polished. The interior reaches Ra ≤ 0.4 µm in the pharmaceutical-grade 316L housings (STU-01, SNU-01, STU-X) and Ra ≤ 0.8 µm in the AISI 304 STE-01 and STE-X.
Which cartridges do they fit?
Cartridges from 10″ to 40″ with 222 or 226 adapters or double open ends, depending on the model; mini cartridges (STU-50 and SNU-K); and 6″ High Flow cartridges in 20, 40, and 60″ lengths (SaniFlow HF).
How do I order a housing?
With its configuration code: series, number of elements, length, connections, gaskets, and accessories. You can build it on each model's page and send it with your quote request.
Technical blog
Guides to select and operate
When to change a filter cartridge: differential pressure and service life
When to change a filter cartridge based on differential pressure: what ΔP measures, clean and change-out ΔP, warning signs, and how to log it batch by batch.
AISI 304 vs. 316L stainless steel in sanitary equipment: differences and when to use each
AISI 304 vs. 316L stainless steel in sanitary equipment: molybdenum, carbon and welding, chlorides, passivation, Ra finish, and when to use each one.
Bacterial retention test (BRT): how sterilizing filtration is validated with your product
How sterilizing filtration is validated with your product in a bacterial retention test: worst case, bacterial viability, controls, and filter integrity.
Talk to engineering
Need a quote or a specification?
Tell us the fluid, the flow rate and the operating conditions. We reply with the model, the ordering code and the technical documentation.