| Customization: | Available |
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| After-sales Service: | Online Installation Guide |
| Warranty: | One Year |
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Kelly cock valve is a manual control valve in the drill string circulation system and is one of the effective tools to prevent blowout . It is upper Kelly valve and lower Kelly valve which is assembled the upper end and lower end of drill pipe. The Kelly valve can be opened on or closed off by the special operating spanner at 90 degrees according to the indicating direction.
| Model | OD | ID | Conn. type | WP | |
| Upper Kelly cock | XS197 | 197(7-3/4) | 76.2(3) | 6-5/8REG LH | 35MPa 70MPa 105MPa |
| XS146 | 146.1(5-3/4) | 44.4(1-3/4) | 4-1/2REG LH | ||
| Lower Kelly cock | XS111 | 111.1(4-3/8) | 38.1(1-1/2) | NC31 | |
| XS121 | 120.7(4-3/4) | 44.4(1-3/4) | NC38 | ||
| XS146 | 146.1(5-3/4) | 44.4(1-3/4) | 4-1/2REG | ||
| XS165 | 165.1(6-1/2) | 71.4(2-13/16) | NC50 | ||
| XS178 | 177.8(7) | 71.4(2-13/16) | NC50 | ||
| XS184 | 184(7-1/4) | 71.4(2-13/16) | 5-1/2FH |
Best-all Petro is located in Dongying City, which is famous for Shengli Oilfield. It is the largest petroleum equipment manufacturing center in China. Best-all Petro is a professional manufacturer of mud pump spare parts. We have obtained API 7K certification and ISO international quality certification.Our main products are: bi-metal cylinder liner, ceramic cylinder liner, hydraulic cylinder, piston, valve assembly and other mud pump spare parts.Our products are not only widely used in the domestic market such as Shengli Oilfield, but also exported to Central Asia, the Middle East, Southeast Asia, North America, South America and other countries in the world. The company follows the principle of "quality first, integrity-based." Because of excellent quality, reasonable price and professional service, we have been highly recognized by customers. Our vision is to become a trusted partner of the international oil equipment industry. Our mission is to provide customers with first-class products and services,and create more value for global customers.
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