BS 5150:1990

Foreword
Committees responsible
Section one. General
1. Scope
2. Definitions
3. Types of valves
4. Nominal sizes
5. Nominal pressures
6. Pressure/temperature ratings
7. Dimensions and tolerances
Section two. Design
8. General
9. Body or bonnet tappings
10. Stem sealing
11. Body end ports and seat bores
12. Back seat
13. Valves for potable water
14. Operation
15. Indicators
Section three. Materials
16. Body, bonnet, yoke and stuffing box materials
17. Trim, stem nut/yoke sleeve materials
Section four. Testing
18. Production pressure testing
19. Test certificate
Section five. Marking
20. Marking
21. Identification symbols
Section six. Preparation for storage and transportation
22. General
23. Obturator position and body ends
Appendices
A. Information to be supplied by the purchaser
B. Designation for purchasing purposes
Tables
1. Pressure/temperature ratings for PN designated valves
2. Pressure/temperature ratings for valves with Class
    125 and Class 150 flanges
3. Face-to-face dimensions and tolerances of flanged
    end non-clamp pattern valves
4. Face-to-face dimensions of flanged end clamp pattern
    valves
5. Minimum outside diameters of sealing faces for
    parallel threaded values complying with BS 2779
6. Maximum heights of valves
7. Minimum thread nominal size for body or bonnet
    tappings
8. Dimensions of body end ports and seat bores
9. Body, bonnet, yoke and stuffing box materials
10. Materials for trim components and yoke sleeve
11. Identification symbols
12. Identification codes
Figure
1. Sketches showing maximum heights of valves