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Kelly valve, upper kelly valve, lower kelly valve, drill pipe safety valve
Whatsapp/Wechat/Phone: 0086 15145386673
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.
We produce H2S resistance Kelly Valves, which adopt high quality import sulfur-resistance material.
Whatsapp/Wechat/Phone: 0086 15145386673
| Model | OD | Connection | ID | Working Pressure |
| mm（inch) | API | mm（inch) | 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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