CEN/TC 69/WG 6 - Check valves
To develop check valves standards.
Check valves
To develop check valves standards.
General Information
Frequently Asked Questions
CEN/TC 69/WG 6 is a Working Group within the European Committee for Standardization (CEN). It is named "Check valves" and is responsible for: To develop check valves standards. This committee has published 5 standards.
CEN/TC 69/WG 6 develops CEN standards. The scope of work includes: To develop check valves standards. Currently, there are 5 published standards from this working group.
The European Committee for Standardization (CEN) is a public standards organization that brings together the national standardization bodies of 34 European countries. CEN provides a platform for developing European Standards (ENs) and other technical documents in relation to various products, materials, services, and processes, supporting the European Single Market.
A Working Group in CEN is a specialized group responsible for developing standards or technical work within a defined scope. These bodies bring together international experts to create consensus-based standards that support global trade, safety, and interoperability.
This European Standard specifies the requirements for cast iron or steel check valves, which are forged, cast or fabricated in straight, angle or oblique pattern (see EN 736-2) with end connections flanged or wafer, butt welding, socket welding, or threaded.
This European standard applies to check valves mainly used for industrial and general purpose applications. However, they may be used for other applications provided the requirements of the relevant performance standards are met.
Back flow prevention anti-pollution check valves are outside the scope of this European standard.
The range of nominal sizes covered is:
DN 8, DN 10; DN 12, DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1000.
DN 8 and DN 12 are not used for PN designated flanged end connections.
DN 8, DN 10 and DN 12 are not used for Class designated flanged end connections.
DN 750 is used for Class designated valves only.
Socket welding end valves and threaded end valves are limited to the range DN 8 to DN 65.
The range of pressure designations covered is:
a) for flanged end and wafer type end cast iron bodies:
- PN 2,5; PN 6; PN 10; PN 16; PN 25;
- Class 125; Class 250;
b) for flanged end, wafer type and butt welding end steel bodies:
- PN 40; PN 63; PN 100;
- Class 150; Class 300; Class 600;
c) for socket welding end steel bodies and threaded end steel bodies:
- PN 40; PN 63; PN 100;
- Class 600; Class 800.
NOTE Class 800 is a widely used Class designation for socket welding and threaded end valves.
- Standard15 pagesEnglish languagee-Library read for1 day
This European Standard specifies the requirements for steel check valves, which are forged, cast or fabricated in straight, angle or oblique pattern (see EN 736 2) with end connections flanged or wafer, butt welding, socket welding, or threaded.
This standard is applicable to steel check valves mainly used for industrial and general purpose applications. However, they can be used for other applications provided the requirements of the relevant performance standards are met.
Back flow prevention anti-pollution check valves are outside the scope of this standard.
The range of nominal sizes covered is:
DN 8; DN 10; DN 12; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1000.
DN 750 is used for Class designated valves only.
DN 8 and DN 12 are not used for PN designated flanged end connections.
DN 8, DN 10 and DN 12 are not used for Class designated flanged end connections.
Socket welding end valves and threaded end valves are limited to the range DN 8 to DN 65.
The range of pressure designations covered is:
a) for flanged end, wafer type and butt welding end valves:
PN 10; PN 16; PN 25; PN 40; PN 63; PN 100;
Class 150; Class 300; Class 600.
b) for socket welding end valves and threaded end valves:
PN 40; PN 63; PN 100;
Class 600; Class 800.
NOTE Class 800 is a Class designation widely used for socket welding and threaded end valves.
- Standard14 pagesEnglish languagee-Library read for1 day
This European Standard specifies requirements for cast iron check valves having flanged end connections or wafer type bofy, with either metallic or resilient seating, in nominal sizes DN40 to DN1000 and nominal pressure ratings PN6 to PN40, Class 125, and Class 250 and in pivoting, linear, diaphragm or ball type.
- Amendment5 pagesEnglish languagee-Library read for1 day
This European Standard specifies requirements for cast iron check valves having flanged end connections or wafer type bofy, with either metallic or resilient seating, in nominal sizes DN40 to DN1000 and nominal pressure ratings PN6 to PN40, Class 125, and Class 250 and in pivoting, linear, diaphragm or ball type.
- Corrigendum2 pagesEnglish, French and German languagee-Library read for1 day
This European Standard specifies requirements for cast iron check valves having flanged end connections or wafer type bofy, with either metallic or resilient seating, in nominal sizes DN40 to DN1000 and nominal pressure ratings PN6 to PN40, Class 125, and Class 250 and in pivoting, linear, diaphragm or ball type.
- Standard11 pagesEnglish languagee-Library read for1 day