Drop-in Check Valve

Drop-In Check valves prevent return flow during a kick and are suitablefor most drilling situations in which return flow through the drill string isa risk and normal operation requires the benefits of a full-bore sub. Bypreventing upward flow through the drill pipe and allowing fluid to bepumped downward to circulate the well, the valves provide the driller withthe means to control the drill pipe pressures when required, significantlyimproving and simplifying well control.