This safety valve is installed to cut off the drill fluid flow in the drill string in case of any risky event. In combination with a closed ram-type preventer a total sealing of the borehole is possible, even when the drill string is installed. The kelly valve is installed into the drill string at the surface and can be closed easily with a hand gear.
Our kelly valves are designed according to the standards of API and resist pressures up to 15,000 PSI (1,000 bar). We offer all common connecting threads like REG, NC, IF and FH. In addition, most mining industry thread connections are available.