Drop in check valve with landing Sub with 6 5/8" OD for 5" Drill pipe with NC50 Connection,for Drill string minimum ID 2 3/4",working pressure 10,000 Psi,H2S Service
Drop in check valve with landing Sub with 7 1/4" OD for 5 1/2" Drill pipe 5 1/2" FH Connection,for Drill string minimum ID 2 13/16" , working pressure 10,000 Psi H2S Service
Drop in check Valve as a IBOP (blowout preventer) in the drill string which combination with landing sub and safety valves
All Retrievable Drop in check Valve (DICV)manufactured in accordance with API Specification 7-1 with NACE MR0175.There are generally several types: arrow shaped check valve,drop in check valve,float valve,float ball check valve, etc.
The valve joint is connected to the stop ring with threads and tightly fastened, and then connected to the drill string before being lowered into the well. When the check valve assembly is not in use, it serves as a joint on the drill string When there is a warning of a blowout, the square drill pipe can be immediately removed, the back pressure valve assembly can be inserted into the drill pipe water hole, and the pump can be turned on to place it in place, thus achieving the purpose of preventing blowout.
