AMAR VALVES AND COCKS
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Product Description 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 ...
Come From Dongying Lake Petroleum Technology Co.,
Kelly cock valve, which is a manually operated ball valve run in I.D of drill string, is one of effective tool for preventation from blowout. The kelly cock is divided into upper kelly cock valve and lower kelly cock . The upper kelly cock is connected between lower end of ...
1. Descriptions: Kelly Valve also named Kelly Cock/Drill Pipe Safety Valve allowing free passage of drilling fluid without pressure loss. The valve can be used as a dill pipe safety valve or upper Kelly valve to control blowout pressures, or as a lower Kelly Valve to prevent ...
