European certification: DIN 4726
PEX EVOH pipes in Europe must meet DIN 4726. This standard covers oxygen barrier properties. Permeability must be below 0.1 mg/m²·day. Example: the EVOH layer is tested for oxygen barrier.
European marking: DIN 4726 label
Pipes must be marked with DIN 4726 on the surface. This indicates compliance with the standard. The marking is visible on the pipe. PEX EVOH pipes bear this marking.
North American certification: ASTM standards
ASTM F876 covers PEX tubing for plumbing. ASTM F877 covers PEX fittings and systems. PEX EVOH pipes must meet these standards.
North American marking: ASTM label
Pipes are marked with ASTM F876 on the surface. This indicates compliance with the standard. The marking is visible on the pipe. PEX EVOH pipes bear this marking.
NSF/ANSI 61 for drinking water
NSF/ANSI 61 is required for potable water systems. This certifies the pipe is safe for drinking water. PEX EVOH pipes must have this certification.
NSF/ANSI 372 for lead content
This standard limits lead content to 0.25%. It ensures compliance with the Safe Drinking Water Act. PEX EVOH pipes must meet this requirement.
cUPC certification in North America
cUPC (Uniform Plumbing Code) is widely required. This certification ensures code compliance. PEX EVOH pipes must have cUPC marking.
Example: European installation
A plumber installs PEX EVOH pipes in Germany. The pipe has DIN 4726 markings. The installation is code-compliant. Example: a safe, approved installation.
Example: North American installation
A plumber installs PEX EVOH pipes in the US. The pipe has ASTM F876 and NSF/ANSI 61 markings. The installation meets code requirements. Example: a code-compliant installation.
Pressure and temperature markings
Pipes are marked with pressure and temperature ratings. This includes PN rating and temperature limits. PEX EVOH pipes have clear markings.
Size markings
The pipe diameter and wall thickness are marked. This ensures correct identification. PEX EVOH pipes have size markings.
Final marking and certification summary
PEX EVOH pipes have specific marking and certification requirements in Europe and North America. In Europe, DIN 4726 marking is required. In North America, ASTM F876 and NSF/ANSI 61 are required. NSF/ANSI 372 ensures low lead content. cUPC is required for code compliance. Pressure, temperature, and size markings are also required. PEX EVOH pipes must comply with local regulations. Example: a safe, certified product.