API 6A Kelly Cock Valve

• After-sales Service: Tbd
• Warranty: Tbd
• Manufacturing Process: Include in All Above
• Surface Treatment: Include in All Above
• Operation Pressure: Include in All Above
• Material: AA-Hh
• Model NO.: YBT-1
• Transport Package: Plywood Case
• Specification: 5000psi ~ 15000psi
• Trademark: YOUYAO
• Origin: Made in China
• HS Code: 3917400000
• Production Capacity: 1000 Sets Per Month

Product Description

Inside blowout preventer tool-API 6A Kelly Cock Valve
The inside blowout preventer manufactured by Jiangsu YOUYAO PETROLEUM MACHINERY CO.,LTD have kelly cock valve,arrow shaped check valve, drop-in check valve.
Kelly cock valve is divided into upper kelly cock valve and lower kelly cock valve.Upper kelly cock valve connects to the top of kelly;lower kelly cock valve connects to the bottom of kelly.Upper kelly cock valve is left-hand thread.Lower kelly cock valve is right-hand thread and the structures of them are the same which are all ball valve.
Both arrow shaped check valve and trap-in check valve belong to drill tool check valve.

Kelly valve is a manually operated ball type drill stem valve; it is divided into upper Kelly valve and lower Kelly valve. The upper Kelly valve is connected between lower end of swivel and upper end of Kelly; the lower Kelly valve is connected between upper end of drill pipe and lower end of Kelly or connected between lower end of Kelly saver subs. The Kelly valve can be opened on or closed off by only turning the special operating wrench at 90° according to indicating direction. During drilling operation, the Kelly valve shall be connected at upper end and lower end of Kelly. 

 

The sealing principle for Kelly valve is that the ball is positioned and provided with proceeding stress by the lower seat supported by spring load and a close seal between ball and ball seat is provided. During normal drilling operation, the hole is kept unblocked by turning the stem to be "on" position; In case of kick or blowout, turn the operating stem to be "off" position to close off the internal bore of drill string, the kick or blowout accident is avoided due to a high pressure sealing situation between ball and ball seat. 

When ordering please specify:

Upper or Lower type;

Tool OD;

Working Pressure: 5,000 / 10,000 / 15,000 PSI;

Tool connection.

Specifications - Upper Kelly Valve

Model	O.D. (mm)	Thread connection (LH)	I.D. (mm)	Max.sealing pressure(Mpa)
CS 146	146	4 1/2 REG	50	68.6
CS 200	200	6 5/8 REG	76.2	68.6