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Ball Check Valve

Ball check valve is a wellhead inside blowout tool, in order to realize safety control in drilling operation.It can effectively solve the overflow, kick occur in trip process. Put it into the well with drill stem and control the mud back flow pressure aut Drilling Tools

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Describe

Ball check valve is a well head inside blowout tool, in order to realize safety control in drilling operation.It can effectively solve the overflow, kick occur in trip process. Put it into the well with drill stem and control the mud back flow pressure automatically.

SPECIFICATION

型号 Model	外徑 O.D.mm(inch)	内徑I.D.mm(inch)	螺紋類型Connection API	工作壓力 Working Pressure
FQ168	168(6 5/8)	71(2 13/16)	NC50	35Mpa,70Mpa
FQ165	165(6 1/2)	71(2 13/16)	NC50	35Mpa,70Mpa
FQ140	139.7 (5-1/2)	57.2(2 1/4)	NC40	35Mpa,70Mpa
FQ127	127 (5)	57.2(2 1/4)	NC38	35Mpa,70Mpa
FQ120	120.7(4 3/4)	57.2(2 1/4)	NC38	35Mpa,70Mpa
FQ105	104.8(4 1/8)	50.8(2)	NC31	35Mpa,70Mpa

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