- NiroSan® | Stainless steel
- NiroSan® Gas | Stainless steel
- NiroSan® Industry | Stainless steel
- NiroSan® SF | Stainless steel
- NiroTherm® | Stainless steel
- NiroTherm® Industry | Stainless steel
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PURAPRESS® | Silicon bronze
- SANHA®-Press | Copper
- SANHA®-Press Gas | Copper
- SANHA®-Press Solar | Copper
- SANHA®-Press Chrom | Copper
- ACR Copper Press | Copper
- Heavy Steel Press | Carbon steel
- Heavy Steel Press Gas | Carbon steel
- SANHA®-Therm | Carbon steel
- SANHA®-Therm Industry | Carbon steel
- 3fit®-Press | Silicon bronze & PPSU
- 3fit®-Push | Brass
PURAPRESS® (series 8000) | Silicon bronze CuSi
PURAPRESS® - The original.
Lead-free press & transition fittings since 2009
PURAPRESS® are unique modern premium transition press fittings for copper and stainless steel pipes made from completely lead-free silicon bronze CuSi. They are tested and approved for reliable connections with copper pipes according to EN 1057 and NiroSan® stainless steel system tubes and certified by all relevant national and international certification bodies.
Press fittings of the PURAPRESS® series are, just like our threaded and transition fittings of the series PURAFIT®, manufactured from the completely lead-free premium material silicon bronze CuSi and therefore an excellent solution for non-lead contaminated drinking water installations. In this way, installers can always be certain that their installation does not contain lead and that they will not be subject to any legal claims should the strict lead tolerances in drinking water installations ever be exceeded. By providing this lead-free alternative to conventional materials, SANHA® also satisfies the market demand for safe and healthy drinking water installations.
SANHA® has been a pioneer in the production of lead-free fittings, starting production in 2009 and offering these premium, future-proof products ever since. With over 60 million sold since then, we have paved the way for lead-free drinking water installations and are being trusted among installers, merchants and planners worldwide.
In combination with our tried and trusted NiroSan® stainless steel system pipes, PURAPRESS® premium fittings combine the well-known positive properties of corrosion resistant copper and stainless steel in terms of hygiene, corrosion resistance, long service life and sustainability while at the same time offering a extremely attractive economical solution.
Products
Filter products
Operating conditions for PURAPRESS® from lead-free silicon bronze for copper and NiroSan® stainless steel system pipes |
|
|---|---|
| Outer pipe diameter | Operating pressure |
| Water and aqueous solutions | |
| d ≤ 108 mm | 16 bar |
| Technical gases (non-toxic, non-flammable) | |
| d ≤ 108 mm | 16 bar |
| Operating temperature PURAPRESS® with EPDM sealing ring |
-30 °C - +120 °C |
|
Type of thread: Pipe thread: R/Rp thread according to EN 10226, |
|
Features
combipress® =
- tool compatibility: pressable with press jaws and slings with original SA, V and M contour up to and including 54 mm
- Leak path feature (certified forced leakage before pressing with EPDM and HNBR sealing rings) in combination with
- Push & Stay function for safe, reliable installation in every position
Lead-free silicon bronze CuSi (CW724R)
The use of this exceptional, specially adapted material completely avoids any lead contamination of drinking water through the installation itself. Installers can therefore be certain when it comes to the strict regulations of the Drinking Water Directive, the European ECHA list and national water regulations regarding lead.
Fast installation, no risk of fire
The connection with stainless steel pipes by cold pressing enables a fast, time-saving installation and eliminates the risk of fire during the process. PURAPRESS® installation systems are therefore ideally suited for renovation work.
Hygienic premium solution, high corrosion resistance
Our premium material silicon bronze CuSi is exceptionally resistant against dezincification and free of tension-crack corrosion - equivalent to red brass. The smooth, passivated surface and dezincification resistance make PURAPRESS® an excellent solution in terms of hygiene since bio-films and particles are considerably less likely to adhere to the inner surface.
Exceptional flexibility
- All dimensions from 12 to 108 mm including 64 and 67 mm available
- Reliable, permanent connection with NiroSan® stainless steel system pipes:
- NiroSan® (1.4404/316L), TIG-welded, annealed, low carbon, high (≥ 2,3 %) molybdenum content for increased corrosion resistance. Labelled in black lettering
- NiroSan® ECO (1.4404/316L), optimized wall thickness, TIG-welded, annealed, low carbon, high ( ≥ 2,3 %) molybdenum content for increased corrosion resistance
- NiroSan®-F (1.4521/444), TIG-welded, pickled for improved corrosion resistance, nickle-free
- copper pipes according to EN 1057
- Thread according to EN 10226 and/or ISO7/1 Typ R und Rp
Areas of application
More applications on demand.
PURAPRESS® FAQ
1. What is PURAPRESS®?
PURAPRESS® is a press and transition fitting system from SANHA® made from lead-free silicon bronze CuSi (CW724R). The fittings have been developed specifically for drinking water installations and can be used with copper pipes as well as NiroSan® stainless steel system pipes, amongst others. SANHA® has been using CuSi for these products since 2009.
2. Is PURAPRESS® lead-free?
Yes. PURAPRESS® is manufactured from lead-free silicon bronze CuSi (CW724R). This means that, due to the nature of the material, the fittings do not leach any lead into the drinking water. SANHA® emphasises this advantage, particularly with regard to the requirements for materials in contact with drinking water.
3. What is silicon bronze CuSi or CW724R?
CW724R is a lead-free copper alloy that SANHA® uses for its PURAPRESS® press and transition fittings, as well as PURAFIT® threaded fittings. The material is highly resistant to dezincification and is suitable for contact with drinking water.
4. Is PURAPRESS® suitable for drinking water?
Yes. PURAPRESS® was developed specifically for drinking water installations. According to SANHA®, the lead-free material CuSi (CW724R) used is approved for drinking water by the ECHA, the German Federal Environment Agency (UBA) and international certification bodies.
5. Which pipes can PURAPRESS® be used with?
PURAPRESS® can be used, amongst other things, for connections with copper pipes in accordance with EN 1057, as well as with NiroSan® stainless steel system pipes. This means the fittings are also suitable for transitions between different pipe materials within a single installation.
6. What advantages does PURAPRESS® offer over lead-containing copper alloys?
The key difference is the lead-free CuSi (CW724R) material. This ensures that no lead can be released into the drinking water from PURAPRESS® fittings. At the same time, the alloy is highly resistant to dezincification. This supports a future-proof choice of material, particularly for drinking water installations.
7. Since when has SANHA® been offering lead-free CuSi fittings?
SANHA® switched to silicon bronze (CuSi) as early as 2009. According to the company, SANHA® therefore has more than 15 years’ experience with this material and has since sold more than 120 million products in this range.
8. Is there an Environmental Product Declaration (EPD) for PURAPRESS®?
Yes. A jointly verified Environmental Product Declaration (EPD) in accordance with ISO 14025 and EN 15804 is available for PURAPRESS® and PURAFIT®. The published EPD bears the registration number EPD-Kiwa-EE-184883-EN and is valid until 17 October 2029.
Certificates
Show cases
| Country | Reference | Product |
|---|---|---|
| Kloster Salzburg | PURAPRESS® | Silicon bronze, 3fit®-Press | Silicon bronze & PPSU, Threaded fittings from malleable cast iron, SANHA®-Therm | Carbon steel | |
| Neubau Fa. Blau | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, 3fit®-Press | Silicon bronze & PPSU, SANHA®-Therm | Carbon steel, NiroSan® | Stainless steel, NiroSan® Gas | Stainless steel, Heating circuit manifolds | |
| Porta Anderlecht, Anderlecht | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper | |
| Shell, Gent | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper | |
| Alter Güterbahnhof, Freiburg | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, NiroTherm® | Stainless steel, 3fit®-Press | Silicon bronze & PPSU, SANHA®-Therm | Carbon steel, NiroSan® | Stainless steel, NiroSan® Gas | Stainless steel, Heating circuit manifolds | |
| Arborea Marina Resort, Neustadt | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, NiroTherm® | Stainless steel, 3fit®-Press | Silicon bronze & PPSU, SANHA®-Therm | Carbon steel, NiroSan® | Stainless steel | |
| Disney Adventure Cruise | PURAPRESS® | Silicon bronze, PURAFIT® | Silicon bronze, SANHA®-Press | Copper | |
| Feuerwache Frechen | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, NiroTherm® | Stainless steel, SANHA®-Therm | Carbon steel, NiroSan® | Stainless steel | |
| Johannes Gutenberg Universität, Mainz | PURAPRESS® | Silicon bronze, NiroTherm® | Stainless steel, NiroSan® | Stainless steel | |
| Raab Karcher, Essen | PURAPRESS® | Silicon bronze | |
| Raab Karcher, Essen | PURAPRESS® | Silicon bronze, NiroTherm® | Stainless steel | |
| Hotel 120 rooms, Santander | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper | |
| Le Collectionneur, Paris | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, NiroTherm® | Stainless steel | |
| America's Cup HQ, Portsmouth | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, SANHA®-Press Gas | Copper, SANHA®-Press Chrom | Copper | |
| America's Cup HQ, Portsmouth | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, SANHA®-Press Gas | Copper, SANHA®-Press Chrom | Copper | |
| ProMessa, Deventer | PURAPRESS® | Silicon bronze, SANHA®-Press | Copper, NiroTherm® | Stainless steel, RefHP® | CuFe | |
| Cedrób Skarżynek, Skarżynek k/ Ostrółęki | PURAPRESS® | Silicon bronze, SANHA®-Therm | Carbon steel |