Double connector with SC 28 x 6/4" bronze / polished, model 2263 305048

The application of the Sanpress SC‑Contur reducing coupling includes connecting pipes of different diameters in water and heating systems.

Description and Application

The Sanpress SC‑Contur reducing coupling connects two pipes of different diameters – 28 mm (3/4 ") and 1 1/2 " – within a single, compact housing. Thanks to a press fitting on one side and a metric internal thread on the other, installation is quick and requires no additional specialized tools. The product is intended for water and heating installations where reliable tightness is required at medium operating pressures (up to 16 bar at 20 °C). The bronze construction in a polished finish ensures corrosion resistance and an aesthetic appearance, making it suitable for both concealed and visible installations.

Key Features and Benefits

• One-piece construction – eliminates the risk of leaks at the connection point, accelerating quality control of the installation.
• Flat EPDM seal (EDPM) – provides a durable barrier against leaks while remaining flexible to minor temperature fluctuations.
• Raw surface finish on both connections allows easy fitting of additional components (e.g., brass nuts) without the need for further finishing.
• No integrated drain valve – enables free use of additional valves in the system when required.
• Compatibility with the SC‑Contur system – ensures consistency with other VIEGA components, simplifying the design of entire sanitary or heating systems.
• Maximum operating pressure 16 bar – sufficient for typical domestic installations and small commercial facilities.

Installation and Practical Tips

1. Pipe preparation – clean the end of the 28 mm pipe and slide on the press fitting; ensure the surface is dry and free of contaminants.
2. Thread installation – screw the 1 1/2 " pipe into the metric internal thread using an appropriate torque wrench (recommended torque values are provided in the technical documentation).
3. Sealing – place the EPDM ring before tightening; the material automatically conforms to irregularities, ensuring tightness without additional gaskets.
4. Leak testing – after completing the installation, perform a pressure test up to 16 bar; absence of leaks confirms correct installation.

Thanks to its simple "straight" shape and the absence of additional components such as air vents or drain valves, the reducing coupling is a universal solution for both experienced installers and end customers planning to independently assemble simple water-heating systems.