Union nut EN1254, gunmetal, 4374R
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- For universal use in various areas of application, e.g. shipbuilding and the mechanical engineering industry
- Meets the requirements of the various German Technical and Scientific Association for Gas and Water (DVGW) regulations
- Also approved by other certification institutes such as KIWA, BSI Kitemark, British Gas, Gaz de France, NF, SVGW
Fitness for drinking water is confirmed by the DVGW type examination certificates DV-7411AO2008 (copper fittings) and DV-7401AS2290 (gunmetal adapter fittings). This is also confirmed by the Austrian conformity registration certificate no. R-15.2.3-20-17025 for the 4000 series and R-15.2.3-20-17026 for the 5000 series.
Application area
- Drinking water installations DIN EN 806 and DIN 1988
- Natural gas installations DIN EN 1775 and DVGW G 600 (TRGI)
- LPG installations German Technical LPG Rules (TRF)
- Heating oil utilities DIN 4755 (German Technical Rules for the Installation of Oil Burning Systems – TRÖ)
- Hot water heating systems DIN EN 12828
- Local and district heating pipelines, DIN 4747
- Thermal solar collectors
- Water-circulation-based room cooling equipment
- Air Conditioning and Refrigeration (ACR)
- Compressed air
- Systems for distributing technical and medical gases
- Rainwater harvesting systems, DIN 1989
- Extinguishing lines, “wet” DIN 14462
- Sprinkler systems “wet” VdS CEA 4001
- Industrial and process water
- Sewage lifting plants
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