1. Body
5. Seat ring
9. Packing
13. Hinge pin
17. Sleeve nut
21. Yoke bolt
2. Bonnet
6. Bonnet bolt
10. Back seat
14. Gland bolt
18. Hand wheel
22. Yoke nut
3. Disc
7. Bonnet nut
11. Gland ring
15. Gland nut
19. Handle nut
23. Grease nipple
4. Stem
8. Gasket
12. Gland flange
16. Yoke sleeve
20. Yoke
24. Set screw