Depending on the material and sealing ring, our piping systems can be used for numerous applications such as drinking water, heating, natural gas, compressed air, CO2 (cooling/refrigeration lines), rainwater, diesel. The areas of application range from classic building technology to shipbuilding, trade such as car workshops, animal troughs and paint shops to the automotive and chemical industries.
For steam systems, we recommend the NiroSan® piping system made of high-alloy stainless steel 1.4404 / 316L with black EPDM seal for operating conditions up to 12 bar and 120 ºC or NiroSan® Industry with red FKM seal up to 12 bar and 200 ºC.
Noble gases are Helium, Argon, Neon, Krypton, Xeon and Radon. They are also known as inert gases because they are not flammable and hardly soluble in water. Due to these properties, inert gases are mostly used as shielding gases during welding or for cooling. We recommend the series 6000 and 8000 (copper or silicon bronze CuSi) with black EPDM seal or the series 9000 NiroSan® made of stainless steel 1.4404 /316L with black EPDM seal.
In an ideal world the drinking water installation is designed, installed and operated in such a way that stagnation and heating of the cold water pipe are prevented (e.g. by a ring pipe, the placement of the largest consumer at the end of a pipe or the observance of distances between hot and cold water pipe). The operating temperature should always be 60 °C and should never be below 50 °C. The operating temperature should always be 60 °C and should never be below 50 °C. If an infestation nevertheless occurs, a thermal disinfection should be carried out. The temperature of the drinking water is initially increased to between 70 and 90 ºC. The temperature of the drinking water is then also increased. Then all taps are opened and the pipes flushed for at least 3 minutes (note the risk of scalding!). However, this only disinfects the hot water network and lime can be released, which can lead to problems at other points (pump) or serve as a breeding ground for Legionella again. All our piping systems for drinking water can withstand temperatures of up to 120 °C.
We attach great importance to quality and a long service life during development. Our own plants in Germany and Europe, as well as quality tests in our own laboratory facilities, not only enable us to produce well over 80% of our products in-house, we can also carry out our own tests. In terms of laboratory technology, a service life of at least 50 years is simulated for all press systems.
It depends on the food. For food number 1 - drinking water - all our stainless steel systems as well as SANHA-Press made of copper and the lead-free PURAPRESS, PURAFIT® and 3fit®-Press series have all the necessary certificates for drinking water.
In principle, piping systems in the food industry must meet high quality requirements. Press systems such as the premium system NiroSan® made of high-alloy stainless steel can theoretically be used for alcohols (wine, beer, cider, etc.). In these cases the alcohol even disinfects the system. However, a small gap is created between the pipe and the fitting during pressing. Bacteria or residues can accumulate here, which must be disinfected regularly. For this reason, we do not recommend the use of press systems for milk, for example. Viscous or high-calorie liquids can also promote bacterial growth.
However, in the food industry, all media-carrying lines must be made of stainless steel, i.e. also those for compressed air, heating, gas, etc. Here we refer to the manifold application possibilities of our stainless steel systems, especially NiroSan and NiroTherm.
For the food line itself, we alternatively offer copper soldering fittings. During the connection it must be strictly observed that no scale forms in the pipe and leads to impurities. All pipes must remain clean during transport and storage and must be fitted with protective caps and all fittings must remain in the unopened protective bag until installation.
All our press systems have this quality feature. "combipress" has three advantages:
1. tool compatibility (WZK) The WZK is an important part of combipress. This may sound complicated, but it is actually quite simple - our press fittings can be pressed up to and including DN 54 mm with the original contours SA, V and M (in the case of plastic press connections it is the contours TH, B, F, H or U). This saves time, money and creates space in the tool store, because there is no need for fabricators to purchase new tools each time, which are then only needed once or twice for unusual dimensions. Our warranty declarations with the ZVSHK, the BTGA and the VDKF can be found here.
2. Push & Stay or sliding adhesion pipe and fitting are put together and sit firmly, the fitting does not slip down. Practical, especially for overhead installations.
3. UVUD: the (German) abbreviation stands for "Leak before Pressed" and is almost self-explanatory - forgotten joints are a thing of the past and are noticed at the latest when you press the button. This gives fabricators a high degree of certainty that all joints in the respective construction phase have been properly and tightly sealed over the long term.
In principle, the use of NiroSan® or NiroTherm® is possible. However, not only the chlorine content plays an important role, but also the temperature: the higher the temperature, the lower the chlorine content may be. In individual cases, please contact our technical application advisor on 02054 925 170 or email@example.com.
Yes. NiroSan, SANHA-Therm and SANHA Therm DZ pipes can be bent in all dimensions (12-108mm). Up to and including a diameter of 28 mm, we assume warranty if you use a calibrated and maintained bending machine. If the diameter exceeds 28 mm, the installer or the manufacturer of the bending machine is responsible for perfect processing. Tubes with optimized wall thickness (NiroSan®-ECO and NiroTherm®) and nickel-free NiroSan F must not be bent.
From a corrosion point of view, our premium stainless steel system NiroSan® can be mixed with copper and copper alloys without any problems as long as the ratio of the copper surface to the stainless steel surface is greater than 2%. This also applies to copper alloys. For this purpose we offer completely lead-free fittings made of silicon bronze CuSi (PURAPRESS® press fittings, PURAFIT® threaded and transition fittings and 3fit® press fittings for plastic pipes). We strongly advise against the use of leaded fittings made of copper alloys in drinking water installations for health reasons. Important: Even the use of materials from the UBA positive list does not guarantee compliance with the WHO drinking water limit value for lead - and remedying defects can be very expensive.).
All our press systems are tested to an absolute pressure of 200 mbar (1 bar = atmospheric pressure), so they are ideal for vacuum applications.
This is theoretically possible. However, the service life of the plastic system is greatly reduced at continuous temperatures above 70 °C. The 3fit® press system can also be used at temperatures above 70 °C. Even if operating temperatures of 95 °C are sometimes stated on the market, these should be treated with great caution! For temperatures above 70 °C, we therefore recommend using one of our metallic systems such as NiroSan®, NiroTherm®, SANHA®-Press or SANHA®-Therm®, depending on the application.
Stainless steel, especially high-alloy pipes, are very resistant to corrosion. If gypsum or cement falls on the pipe and is then removed and the pipe shows no further damage, this is no problem. Under unfavourable circumstances, however, corrosion can also occur here with very long-term contact due to the high alkaline content of the cement/gypsum.
However, pipes in masonry should always be insulated, if only to allow thermal expansion.
Generally, there are no restrictions except SANHA-Therm carbon steel due to oil on the inside of the pipe but we recommend press fittings from copper (series 6000/8000 SANHA-Press with EPDM o-ring) or stainless steel (Series 9000 NiroSan with EPDM o-ring)
All SANHA copper fittings are degreased as long as they are in a closed original package, but they contain silicone at the o-rings. For degreased and silicone free use SF-Series.
It is suitable for 100 & concentration, up to 55 °C operating temperature and 50 % concentration up to 100 °C operating temperature. Please use press fittings with FKM (or in other series HNBR) o-rings.
Deburring removes lose sharp pieces of the pipe and blunts any sharp edges – on the inside and outside of tube or pipe -that could cut into the o-ring and destroy its sealing properties. Deburring is a must for any long-term, reliable installation. Non deburred tube can cause noise in a piping system, and creates also turbulence in the pipe which can cause erosion corrosion.
Yes, if the pipe is not deburred or the sharp edges removed, the sealing ring can be cut or pushed out, which will lead to a leakage.
Nitrogen: Every system, max. pressure 16 bar
Oxygen: Copper or stainless with FPM or EPDM, max. pressure 16 bar
Acetylene: Stainless steel, with EPDM, max. pressure 1,5 bar
Yes, NiroSan – the premium material 1.4404 / AISI 316L is ideal for steam applications.
EPDM: max. 120 °C
FKM: max. 185 °C saturated steam only
The press connections of all SANHA press system are tested down to an absolute pressure of 200 mbar. (1 bar = atmospheric pressure) and can be used in installations that fulfill this prerequisite.
DCU seal rings are from an earlier production and have been replaced by the D-EPDM. DCU can be used for water and fuel gas. D-EPDM for aquaous liquids and certain technical gases.
All SANHA systems are suitable for water glycol mixtures in closed systems up to 100% glycol. If the glycol is mixed with other chemicals, the technical department must be consulted (firstname.lastname@example.org or +49 2054 925170). We recommend series with FKM or EPDM sealing rings.
In a closed oxygen-free system it is possible, but it has to be insulated against moisture from the outside as well.
Yes, if the tees have complicated forms, they can be made out of nickel plated copper. This can be used in closed systems without problems.
Both types of connections do not enhance any bacterial growth and can be used in normal drinking water installations without concern. There is no difference in performance on the hygienic level. For other media than drinking water like liquid food stuff there is no state of the art standard or studies that confirm the use of press fit systems for such applications.
Yes, it is possible to use the lubricant spray Unisilikon M2000 or other approved silicone gel lubricants, where the pipe is tight.
Yes, but every degree over 70°C will reduce the long term life expectation of the system.
Yes, it is possible to use it with carbon steel and EPDM seals.
Yes, it is possible to use it for LPG gas in the gaseous phase at a max. pressure of 50 mbar. In the liquid phase it is too cold.
The flange dimensions for the connection sizes 64 and 67 are DN 65
EN 1092 defines the dimensions of the flanges to ensure that these fit to other devices.
The durability for the SANHA EPDM seal rings are over 50 years and have been tested by SANHA through an accelerating age test.
Yes, although different countries have different norms and restrictions. The values for Germany can be requested from email@example.com.
It is possible to use SANHA system underground for gas purposes, but without joints/connection. Generally it is not recommended to use SANHA systems for underground installations and local regulations for underground piping have to be taken into account.
Yes, it can be used for fuel gas. We have certifications from BSI, IGEM and DVGW as well as many others.
Yes, it is possible to disinfect a copper system with Sodium Hypochlorite; with a max. pressure of 16 bar, an operating temperature of 5 - 15 °C, a dosing time of 1 hour and a concentration of 50ppm. The next step would be to neutralise the Sodium Hypochlorite with Sodium Thiosulphate; with a max. pressure of 16 bar, an operating temperature of 5-15°C and a dosing time specified by manufacturer to neutralise the Sodium Hypochlorite.
The leak path is a construction feature of all SANHA press fittings except fittings with FKM o-ring, to let the installer know if a fitting has been pressed, by allowing the medium to leak past the o-ring when the system is pressurised. There are different ways to achieve the leak path, and we reserve the right to amend the manner in which the leak path is formed.
“Push and Stay” is a feature of SANHA fittings, which allows the fitting to hold at the pipe, before pressed. That allows the installer to complete the assembly of the system without pressing each fitting directly. Use the insert depth marking to be sure the tube or pipe is inserted over a correct length.
SF means silicone free, which is used for special environments like paint-spray lines at car manufactures, because the silicone could damage the paint film.
PN is the abbreviation of “Pressure Nominal”. Therefore PN 6 counts for the max. pressure of 6 bar at 20°C over 50 years. DN is the abbreviation of “Diameter Nominal”, it describes the inner diameter of a pipe, which is part of the EN ISO 6708.
Yes, SANHA-Therm can be used for compressed air, but the air has to be dry. EPDM: air contains less than 25 mg oil/l compressed air. If the air contains more oil, FKM o-rings must be used. This increases the life time of the installation to up to 50 years.
The abbreviation stands for “Cuprum Silicium”, a copper alloyed with silicon and provides a lead-free end product ideally premium solutions for drinking water installations. SANHA was to our knowledge the first manufacturers to provide fittings made from CuSi, and remains one of the few to offer such a premium product to this day.
DVGW: German Technical and Scientific Association for Gas and Water creates technical rules to set standards in both Germany and within Europe for the utmost safety combined with the best possible efficiency.
WRAS: Water regulations advisory scheme, promote knowledge of the Water Regulations
throughout the UK, provide an advisory service, develop criteria for testing materials and
fitting, assess the results of the testing, administer for those Water Suppliers who wish it and
to participate in the representation of the UK Water Supply Industry.
BSI: British Standard Institution, a multinational business service provider, who creates
standards and supply standards-related services.
VDS: An independent German institution which has been ensuring safety and trust in the fields of fire protection and security for many decades and
develops advanced safety concepts for significant industrial and commercial enterprises.
TÜV: A neutral German third party, which tests, monitors, develops, promotes and certifies
products, equipment, processes and management systems as well as services on the basis of
statutory specifications and other relevant performance benchmarks and standards.
IGEM: Institution of Gas Engineers & Managers is a chartered professional body, licensed by
the Engineering Council, serving a wide range of professionals in the UK and the international
gas industry through Membership, events and a comprehensive set of Technical Standards.
Technically yes, but all our certification is only for single materials, and any substitution is at the installers risk. Mind that a release of the fuel gas line by local regulators could be forbidden.
It is not advisable to repress more than once, unless the jaw did not close the first time or a V- jaw is out of tolerance and shows a leakage at tightness test. Than it could make sense to repress with SA press profile. The reason is that if the second press does not fix the problem, a further press is unlikely to make any difference. Please contact the sales department or technical advisory team of SANHA.
A corrosion inhibitor is a chemical compound that, when added to a liquid or gas, decreases the corrosion rate of a material, typical a metal or an alloy.
In a closed system, the medium circulates in a closed cycle and is subject to alternate heating and cooling without air – rather, O2 - diffusing into it, thus greatly lowering the risk of corrosion. Please note that many theoretically closed systems are not 100 % closed against air in practice, e.g. residential heating systems which are regularly refilled by users.
An open system is a system which comes into contact with O2 due to the construction, e. g. water taps, drainage or floor heating made from old multi-layer pipes without an oxygen barrier such as aluminium. Since oxygen is present as well as water, the material must be highly corrosion-resistant (fittings and pipes made from copper, CuSi or stainless steel for example).
In a “Wet Sprinkler System” water is under pressure in the piping system. Sanha advises: NiroSan (stainless steel) to avoid corrosion problems from inside and outside.
A “Dry Sprinkler System” is empty, until the sprinkler is needed. Then the piping will be pressurised with water. We recommend NiroSan Industry press fittings and pipes from premium stainless steel.
You can only use compression fittings on seamless pipe, ours is not seamless.
The Warranty period is given in our Warranty document on CRM, and states our products are guaranteed free from manufacturing defects for a given period. The design life is the expected longevity of the system, and this generally matches the design life of the building, ie. at least 50 years, provided the products are installed and maintained in accordance with our guidelines and the specification. Our O rings have had accelerated aging testing to demonstrate the 50 year statement. There is no HNBR elastomer material which passed the durability tests for aqueous liquids. Please note we do not offer warranty against corrosion.
Please see our combipress feature at https://www.sanha.com/en/about-sanha/unique-advantages/three-in-one-combipress/ and the respective manufacturer’s documentation.
This depends on the flange type. SANHA offers flanges with four and eight holes according to EN 1092. Dimensions can be found on our website.
Stainless has been certified for drinking water, but when liquids become more viscous, and more calorific, there is a higher likelihood of bacterial growth. This becomes a problem if it gets trapped in any gaps in joints, as it becomes harder to remove during the cleaning process. We generally do not recommend the transport of foodstuffs for human consumption in our stainless steel systems.
Our fittings have been assessed by BSI and have their Kitemark (KM 602057) for use with gas. BSI standard BS 8537:2010 covers the use inside buildings, as does IGEM.
Gas safe is a government backed register of approved installers who are licensed to install gas systems into domestic applications. We are not aware that they make any recommendations on the use of materials, or have lists of approved materials. They do sometimes refer to installation standards, which can be in conflict to product standards.
If during the manufacturing process, the pipe has been discoloured, it is etched to Clean (repassivate) the surface. This generally only happens to end of and beginning of production runs. This can make the pipe dull in appearance. Note. All fittings are dull, as they are cleaned and pickled before annealing as a matter of course. The only difference is the appearance of the pipe.
The 316 stainless steel grades (1.4401/1.4404) are not actual classified for “food grade”, but stainless steel is widely used in the food industry because it offers the highest resistance against corrosion and is easy to be cleaned considering the high requirements on hygiene in the production.
Please see our Installation Instructions at https://www.sanha.com/en/planning-and-installation/downloads/brochures/
Material number EN 10088 / AISI
NiroSan 1.4404 / 316L
Short name X2CrNiMo17-12-2 / Austenitic chromium nickel molybdenum steel
Premium hygienic and corrosion resistant stainless steel, thick wall.
NiroSan ECO 1.4404 / 316L
X2CrNiMo17-12-2 / Austenitic chromium nickel molybdenum steel
Premium hygienic and corrosion resistant stainless steel, thin wall.
NiroSan F 1.4521 / 444
X2CrMoTi18-2 / Ferritic chromium molybdenum steel
Hygienic and corrosion resistant thick wall pipe, forbidden to bend, no fittings possible.
NiroTherm 1.4301 / 304
X5CrNi18-10 / Austenitic chromium nickel steel
Premium stainless steel, thin wall, but according to the state of the art not to be used in contact with drinking water. Corrosion resistant on the inside and outside in closed systems, heating, colling water-glycol systems.
Labelling: Black / Black / Black / Green stripe Red
A thinner kind of copper pipe, and a brand name, which is harder than the table X copper pipe. It exists only in
35, 42 (1mm) and 54 mm (1,2mm).
• Wall thickness / Pipe Dimension 35mm 42mm 54mm
• Litex 1mm 1mm 1,2mm
• Table X 1,2mm 1,2mm 1,2mm
• Table Y 1,5mm 1,5mm 1,5mm
• EN 1057 1/1,2/1,5mm 1/1,2/1,5mm 1/1,2/1,5/2mm
Table X was a type of copper pipe, which was defined by a special wall thickness for each diameter. Now, BS EN 1057 and EN 1254/7 for press fittings regulates all definitions of copper pipes.
• Copper: Light engraving on site of pipe
• Stainless: Printed on the pipe in black with the name of pipe type.
• NiroSan has a SANHA-blue end cap
• NiroSan Eco has black end cap
• NiroSan F has a green end cap.
• Carbon: Printed on the pipe in red colour.
• Multilayer: The MultiFit Flex straight lengths have a red end cap.
All the SANHA stainless steel pipe products can be welded when combining with 'Press'
Fittings. However, the following items must be taken in consideration when carrying out these
• SANHA pipe must be TIG welded
• As SANHA pipes are generally thin walled products, our experience here dictates that the
welder must be experienced as thin walled pipes are not as easy to weld as heavier
* a press connection may not be heated up due to the welding process as it can damage the elastomer seal
That can sometimes happen with copper if the pipe has been chamfered when cut, in combination with a fitting which is loose for whatever reason. We call it the wobbling effect. It does not effect the tightness of the connection, as long as no force is put on the connection by wobbling the tube further in the fitting. Also, torsion will not necessarily effect the tightness of a connection.
SANHA carbon steel pipe is externally galvanised (Zinc) to a thickness of 7 microns. There is no internal galvanisation, just an "oil film". Both the external galvanising and the internal oil film are applied purely to assist in preventing corrosion during transit and are neither intended or supplied as long term "anti-corrosion" treatments. This means that all carbon steel systems must be properly isolated and protected according to the national and international norms at all times.
Questions about ordering
No, but for orders below £1,000 we charge a minimum quantity surcharge of 15,- €.
In the first step you have to register. As we are part of the tried and tested three-tier distribution channel as a partner of trade and crafts, we first check your registration. Once you have approved your registration, you can place the desired items in your shopping basket as in any shop and then proceed to checkout.
Our online shop for fittings and pipes is primarily aimed at specialist wholesalers and industrial companies as well as public clients. If you are a processor and cannot afford to purchase our systems from your specialist wholesaler, please contact us or complete your registration first - we will find a solution!
You can have your order sent to any address that can be reached by parcel services and forwarding agents.
Questions about account and registration
As a reliable partner, SANHA continues to support the three-tier distribution channel. In addition, our shop is only available to business customers. Therefore, we carefully check that these goals are achieved.
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Questions about payment and delivery
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We want you to be satisfied. That's why we attach great importance to fast delivery. However, the delivery time is partly dependent on the quantity and type of goods ordered, so a flat rate is not possible. If you have individual questions, please feel free to contact us.
You can find the delivery and shipping costs here.
Security and payment
The return of ordered and properly delivered goods is generally excluded. If, in exceptional cases, we agree in writing to the return of properly delivered goods, we shall receive 30% of the net invoice value for the delivered goods plus value-added tax as remuneration. This amount shall be taken into account in the credit note to be issued by us. The goods must be returned carriage paid ex works.
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SSL stands for Secure Socket Layer. This is used to check whether the website has appropriate security certificates. Many browsers, such as Google Chrome, only accept certificates from trusted organizations.
We are entitled to process data of the customer, which are in connection with the business relation to this, in the sense of the Federal Law for Data Protection. Of course we treat your data safely and carefully. Our data protection regulations can be found here. If you have any individual questions, please feel free to contact our data protection officer: firstname.lastname@example.org
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