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4 1/2" upper kelly valve lower kelly valve for Oil Drilling Rig
Kelly valve(upper kelly valve/lower kelly valve) for oil drilling
4 1/2" upper kelly valve lower kelly valve for Oil Drilling Rig
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.
| O. D. (mm) | Length (mm) | Thread Conn. (in) | Spring Load (KN) | Pressure to cut off vale (Map) | Bar moving (mm) | |||
| Top | Down | Min | Max | Limit | ||||
| 165 | 570 | 4 1/2" IF Box | 4 1/2" Pin | 1 | 2.2 | 2.5 | 1 | 30 |
| 203 | 790 | 5 1/2" FH Box | 5 1/2" Pin | 1 | 2.2 | 2.78 | 1 | 30 |
4 1/2" upper kelly valve lower kelly valve for Oil Drilling Rig
Kelly valve description:
Kelly valve also named Kelly cock or drill pipe safety valve. It is a hand control valve in drill string circulating
system and it is one of the effective tools to prevent blowout. Kelly valve is divided into Upper Kelly Valve and
Lower Kelly Valve. Upper Kelly Valve is connected between swivel sub and Kelly. Lower Kelly valve is connected
between lower end of Kelly and top of drill pipe or lower end of Kelly save sub. Rotating the wrench of full
opening safety valve 90° to realize on and off. In the drilling operation, in order to avoid malignant accidents,
Kelly valves should be connected to both end of Kelly to prevent loss of drilling fluid and blowout.
Kelly valve specifications:
|
Type |
OD mm(inch) |
Connection API |
ID mm(inch) |
Working Pressure MPa |
|
XS86 |
86(3 3/8) |
NC26 |
30(1-3/16) |
35-70 |
|
XS105 |
105(4 1/8) |
NC31 |
40(1-37/64) |
35-70 |
|
XS111 |
111(4-3/8) |
NC31 |
40(1-37/64) |
35-70 |
|
XS121 |
121(4 3/4) |
NC38 |
44.5(1 3/4) |
35-70 |
|
XS127 |
127(5) |
NC38 |
44.5(1 3/4) |
35-70 |
|
XS146 |
146(5 3/4) |
4-1/2REG LH |
44.5(1 3/4) |
35-70 |
|
XS159 |
159(6 1/4) |
NC46 |
57.2(2 1/4) |
35-70 |
|
XS168 |
168(6 5/8) |
NC50 |
71.4(2-13/16) |
35-70 |
|
XS178 |
178(7) |
5-1/2FH |
71.4(2-13/16) |
35-70 |
|
XS197 |
197(7 3/4) |
6-5/8REG LH |
76.2(3) |
35-70 |
|
XS203 |
203(8) |
6-5/8REG LH |
76.2(3) |
35-70 |
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