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
型號 | 外徑 O.D.mm(inch) | 內(nèi)徑I.D.mm(inch) | 螺紋類型Connection | 工作壓力 |
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 |
