Ko Kelly valve he momo poroporo a ringa mo te kakau drill, ka wehewehea ki nga waahanga o runga me raro. Kei te hono te takirere Kelly o runga ki waenga i te pito o raro o te hurihuri me te pito o runga o Kelly. Ko te riu Kelly o raro e hono ana ki waenga i te pito o runga o te putorino drill me te pito o raro o Kelly, te pito o raro ranei o Kelly saver subs. Ka taea te whakatuwhera, te kati ranei i te Kelly valve ma te huri noa i te wrew mahi motuhake 90° kia rite ki te ahunga kua tohua.
Ko te kaupapa hiri mo Kelly valve ko te whakarite i tetahi nohoanga tata i waenga i te poi me te nohoanga poi. Ko te nohoanga o raro e tautokohia ana e te puna. Ko te kaha e whakaratohia ana e te puna kia mau tonu te poi ki te tuunga o raro. I roto i nga mahi keri noa, ka noho tuwhera te kohao ma te huri i te kakau ki te tuunga 'i runga'; Ki te whana, ki te pupuhi ranei, hurihia te kakau whakahaere ki te tuunga 'atu' ki te kati i te kohao o roto o te aho wiri, ka karohia te whana, te pupuhi ranei na te kaha o te hiri i waenga i te poi me te nohoanga poi.
I te wa e ota ana koa tohua:
● Momo Runga Raro ranei;
● Utauta OD;
● Te pehanga mahi: 5,000 / 10,000 / 15,000 psi;
● Hononga taputapu.
Whakatakotoranga - Upper Kelly Valve
| Tauira | Waehere Hua | OD (mm) | Hononga miro (LH) |
ID (mm) | Max. Pēhanga hiri (MPa) |
| CS 146K | F021461 | 146 | 4 1/2 REG | 57.2 | 68.6 |
| CS 200K | F022001 | 200 | 6 5/8 REG | 76.2 | 68.6 |
Whakatakotoranga - Raro Kelly Valve
| Tauira | Waehere Hua | OD (mm) | Hononga miro (LH) |
ID (mm) | Max. Pēhanga hiri (MPa) |
| XS105K | F021051 | 105 | NC31 | 40 | 68.6 |
| XS121K | F021211 | 121 | NC38 | 44.5 | 68.6 |
| XS127K | F021271 | 127 | NC38 | 44.5 | 68.6 |
| XS140K | F021402 | 139.7 | NC40 | 57.2 | 68.6 |
| XS159K | F021591 | 159 | NC46 | 61 | 68.6 |
| XS165K | F021653 | 165 | NC46 | 61 | 68.6 |
| XS178K | F021781 , F021782 | 178 | NC50 , 5 1/2 FH | 71.4 | 68.6 |