The Hydrostatic Test
Pressure(Mpa) | ||
Shell | 3.75 | |
Seal | 2.75 |
1 | Body | Ductile iron |
2 | Disc | Ductile iron |
3 | Shaft | SS431 |
4 | Seat | EPDM |
5 | Bushing | PTFE |
6 | O-ring | NBR |
7 | Lever | Malleble iron |
8 | Indicator | Carbon steel |
9 | Handwheel | Cast iron |