دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The casing float in which is installed by check valve. There are two kinds of ball float collar: cement lining and aluminum alloy lining.

n: The casing float shoe in which is installed by check valve. There are two kinds of ball float shoe: cement and aluminum alloy.

n: a valve that completely shuts off flow of a fluid. It is usually either completely open or completely closed.

valve that blocks flow into the downstream conduit when in the closed position.

n: a valve that permits flow in one direction only. If the gas or liquid starts to reverse, the valve automatically closes, preventing reverse movement. Commonly referred to as a one-way valve.

n: A valve that permits flow in one direction only.

a valve that only allow flow in one direction.

n: A one way valve installed at the bottom of drill pipe and above drill bit. Allowing drill fluid flowing from top to bottom in drill pipe.

n: A kind of long cylindrical barrel installed with clack valve.