Kelly cock

Square drill pipe plug (3-3/8 "~8", 35Mpa~105Mpa) is also known as square drill pipe cock or drill pipe safety valve. The drilling fluid can flow freely through the valve without pressure drop. This type of valve is used as a drill rod safety valve or installed above the square drill rod to control blowout prevention. Or under the square drill pipe, to prevent the loss of drilling fluid when the square drill pipe is removed. Its working pressure can reach 10000psi or 15000psi. Xinjiang Top Drive IBOP

The manual control valve and square drill pipe plug valve in the drill string circulation system can provide high-pressure sealing. The square drill pipe plug valve is divided into upper square drill pipe plug valve and lower square drill pipe plug valve. The upper square drill pipe plug valve is a left-hand connection; The lower square drill pipe plug valve is a right-hand connection. The upper square drill pipe plug valve is connected between the lower end of the faucet and the upper end of the square drill pipe. The lower square drill pipe plug valve is connected between the lower end of the square drill pipe and the upper end of the drill pipe or drill pipe protection joint.