Flow Check Sub
Description / Application
The BIlco flow check sub is an internal ball valve sub used to direct fluid flow to tools located above the check while allowing the tubing below to fill from annulus and bit. The flow check sub is generally used in a short trip application along with the BIlco wellhead jetting tool, Bilco magnet jet tool for BOPs, and Bilco filter tool.
This tool is primarily used below the riser/wellhead jetting tool to direct all flow through the jet nozzles during a designated surface jetting run. By directing the flow through the jet nozzles exact exit velocities and flow rates can be established.