group nameDownhole Tools
Min Order1 piece
update timeMon, 08 Apr 2013 00:31:11 GMT
Processing Type Casting
Machine Type Drilling Equipment
Type Drop-in check valve
Use Well Drilling
Certification API
Material Iron
Min Order1 piece
check valve
Back pressure sub is connected with stop ring and tightened on and put into downhole with drill string. Back pressure sub is used as a sub above drill string before check valve assembly is run into downhole.
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