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TAVINOX PRESS press-fit system

Service and industrial water

Treated, softened, rainwater or process water places higher demands than drinking water.

Chlorides up to 600 mg/l. Temperature up to 110 °C. Pressure up to 16 bar. Dimensions 15–323 mm. AISI 316L with 2–3 % Mo.

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Service and industrial water
  • S-Centrum Hodonín
  • Čtyři Dvory České Budějovice
  • Arena Brno
  • Lázeňský hotel Albatros
  • Onkologické centrum Motol
  • Železniční stanice Praha-Bubny

Why stainless steel for service water distribution

Process water, demineralised water, rainwater and pool systems are typically more chemically demanding than drinking water.

Molybdenum for resistance

AISI 316L contains 2–3 % molybdenum, significantly increasing resistance to pitting and crevice corrosion in chemically demanding media.

Wide pH range

AISI 316L reliably operates in media with pH ≥ 6.5. From demineralised water to industrial process liquids.

Chloride resistance

Certified for media with chloride content up to 600 mg/l. Significantly above the 250 mg/l limit for drinking water.

Temperature resistance

Industrial water at 110 °C presents no challenge for stainless steel. Unlike plastics, which lose strength under these conditions.

One material for everything

From rainwater through pool technology to industrial processes. AISI 316L covers the full spectrum without the need to change material.

Compatibility with water treatment

Stainless steel is inert to reverse osmosis, ion exchange and softened water. No degradation even with long-term contact.

Designed for industrial and commercial buildings

Apartment buildings
Family houses
Hotels
Hospitals
Industrial facilities
Public buildings

Looking for other applications of the TAVINOX PRESS stainless steel system?

Other application areas

Technical parameters for service and industrial water

ParameterValue
Operating pressure (process water)16 bar
Max. operating temperature (process water)110 °C
Operating pressure (rainwater)6 bar
Max. operating temperature (rainwater)40 °C
Chloride limit (non-potable water)600 mg/l
Fitting material – PRESSAISI 316L (1.4404)
Fitting material – GROOVEAISI 304 (1.4301) / AISI 316L (1.4404)
Tube materialAISI 316L / AISI 304L
Size range – press-fit15–108 mm
Size range – grooved133–323 mm
Max. temperature – GROOVEdrinking water up to 80 °C, other media (e.g. heating) up to 110 °C
Press profileM
Seal – PRESSEPDM (−55 °C to +120 °C)
Unpressed-joint detectionLeak Detect (from 0.1 bar) + blue indicator ring

Connection to other materials: Combination with copper and other stainless steels is unrestricted. With carbon steel only via a brass dielectric nipple (min. 50 mm), with the flow always running from carbon steel to stainless steel. The complete parameters of the TAVINOX PRESS system are given in the technical manual.

Downloads

TAVINOX PRESS Technical Manual

includes sections such as:

  • AISI 316L — chemical resistance
  • Industrial and laboratory applications
  • Demineralised water and reverse osmosis
  • Swimming pool systems — guidance
  • Sizing of industrial pipework
Download

“Industrial process water is more demanding than drinking water. Higher temperatures, chlorides, aggressive pH — that is a challenge for the material.”

TAVINOX PRESS in AISI 316L with molybdenum handles conditions where other materials fail.

Other application areas of the TAVINOX stainless steel system

Drinking water distribution

Drinking water distribution

AISI 316L / 304L, ITC certified, 316L also DVGW certified. Hygienically safe, biofilm-free, no chemical water treatment required.

More information
Heating systems

Heating systems

16 bar / 110 °C, EN 12828. Zero oxygen diffusion, clean heating circuit, no chemical water treatment.

More information
Cooling and air-conditioning pipework

Cooling and air-conditioning pipework

6 bar / –10 °C. Resistant to external condensation, inert to water/glycol 50/50 mixtures.

More information
Fire protection pipework

Fire protection pipework

PAVUS certification per VdS CEA 4001. Ø22–108 mm, wet and dry systems. Classes LH, OH1–OH4.

More information
Compressed air distribution

Compressed air distribution

10 bar / 60 °C, class 1–3 per ISO 8573-1. Vacuum to –0.8 bar. Zero internal corrosion, clean air without contamination.

More information
Heat pumps and solar systems

Heat pumps and solar systems

6 bar, –35 to +110 °C, short-term 200 °C. Inert to glycol mixtures, one material for both heat pump modes.

More information

Project references

View use cases
S-Centrum HodonínS-Centrum HodonínČtyři Dvory České BudějoviceČtyři Dvory České BudějoviceArena BrnoArena BrnoAlbatros Spa HotelAlbatros Spa HotelMotol Oncology CentreMotol Oncology CentrePraha-Bubny railway stationPraha-Bubny railway station

Frequently asked questions about utility and industrial water distribution

What chloride limit does stainless steel piping have for utility and industrial water?
TAVINOX PRESS stainless steel piping made of AISI 316L is certified for chloride content up to 600 mg/l in industrial and process applications – significantly above the 250 mg/l limit applicable to drinking water under EU standards. The increased resistance is ensured by the 2–3 % molybdenum content in 316L steel, which protects the piping against pitting and crevice corrosion. For swimming pool environments with higher chloride concentrations, 316L is mandatory, not 304L.
Is stainless steel piping compatible with reverse osmosis and demineralised water?
AISI 316L is chemically inert to demineralised water, reverse osmosis water and ion-exchanged water – there is no material degradation or ion release into the medium. The TAVINOX PRESS system is suitable for distribution systems in laboratories, water treatment plants and industrial processes requiring highly pure media. The condition is maintaining pH ≥ 6.5, while strongly acidic environments below this value require individual assessment.
Can stainless steel piping be used for rainwater distribution?
Yes. TAVINOX PRESS is certified for the collection and distribution of rainwater from cisterns at operating pressure up to 10 bar and a maximum temperature of 25 °C. Both materials – AISI 316L and AISI 304L – are suitable for rainwater applications. Due to the variable chemical composition of rainwater (acidity, content of organic substances), disinfection with hydrogen peroxide is recommended. Chlorine disinfection is permissible up to 25 ppm for 24 hours, followed by flushing to a residual content below 2 ppm.
Which stainless steel piping material is suitable for swimming pool and water park distribution systems?
AISI 316L is the mandatory material for swimming pool and water park distribution systems – 304L is not suitable for these environments. Pool water contains increased amounts of chlorine and chlorides, which would cause pitting corrosion in steel without molybdenum. AISI 316L with 2–3 % molybdenum content withstands chloride concentrations common in pool technology. The TAVINOX PRESS system is available in 316L steel for sizes 15–108 mm in press connections and 133–323 mm in grooved connections.
What is the Leak Detect system and how does it protect utility water distribution systems?
Leak Detect is a safety feature of the TAVINOX PRESS system that indicates an unpressed joint before the pipeline is put into operation. An unpressed fitting allows the medium to pass through from a pressure of 0.1 bar and is visually marked by a blue indicator. This means the installation error is detected during the pressure test, not during a failure in operation. Leak Detect is a standard feature across the entire range at no extra cost and does not require any special tools.
How should TAVINOX stainless steel piping be connected to existing carbon steel systems?
The combination of TAVINOX PRESS stainless steel piping with carbon steel must be made via a brass dielectric fitting with a minimum length of 50 mm. The flow direction must always go from carbon steel to stainless steel – in the opposite direction, accelerated galvanic corrosion occurs. Combination with copper and other corrosion-resistant steel is unrestricted and does not require a transition piece. This rule applies to all utility and industrial water systems during reconstruction of existing piping.
Service and industrial water | TAVINOX