The kelly splash-proof valve is a necessary tool preventing fluid flowing from kelly to drill floor and keeping the operating environment from being contaminated by fluid when making a connection or kelly is taken out of hole and discharged off.
Technical parameters and specifications
| O.D.(mm) |
Thread connection |
Spring Load (KN) |
Pressure to
cut off valve
(Mpa) |
Bar moving
(mm) |
| Top |
Down |
Min |
Max |
Limit |
| 165 |
4 1/2IF Box |
4 1/2IF Pin |
1 |
2.2 |
2.5 |
1 |
30 |
| 178 |
5 1/2IF Box |
5 1/2IF Pin |
1 |
2.2 |
2.78 |
1 |
30 | |
