BS 5153:1974

Cooperating organizations
Foreword
Specification
Section one. General
1. Scope
2. References
3. Terminology and definitions
4. Types
5. Nominal sizes
6. Nominal pressure
7. Pressure/temperature ratings
Section two. Body ends
8. Flanged body ends
9. Screwed body ends
Section three. Design and manufacture
10. Bodies
11. Body tappings
12. Body to cover connection
13. Bolting
14. Seats
15. Disks
Section four. Materials
16. Choice of materials
17. Trim
Section five. Testing and inspection
18. Testing
19 Test certificate
20. Inspection
21. Witnessing of tests
22. Certificate of conformity
Section six. Preparation for despatch
23. After testing
24. Disk position
25. Body ends
Section seven. Marking
26. General
27. Body markings
28. Identification plate markings
29. Body or identification plate markings
30. Material symbols
31. Additional markings
32. Omission of markings
Section eight. Valves for use in ANSI flanged piping
systems
33. Requirements
Section nine. Enquiry or order information
34. Information to be supplied
Appendix
A. Cast iron check valves for general purposes with
    ANSI Class 125 flanges
Tables
1. Pressure/temperature ratings
2. Face-to-face and centre-to-face dimensions
3. Minimum outside diameters of sealing faces for
    parallel threaded valves
4. Dimensions of body end ports and seat bores
5. Basic materials
6. Test durations
7. Dimensions of ANSI Class 125 flanges
8. Pressure/temperature ratings for Class 125 valves
9. Test pressure (gauge) for Class 125 valves

Nominal diameters DN 10 to 1000 and nominal sizes ½ to 6 for nominal pressure ratings PN 6, 10, 16 and 25.