A choke for fluid connection between a manifold and a pump. The choke includes a fluid passage having an inlet, a contraction portion, a throat, an expansion portion, and an outlet. The inlet has a first diameter and the outlet has a second diameter. The throat is substantially cylindrical, having a third diameter that is substantially less than the first and second diameters. The contraction portion connects the inlet and the throat and gradually decreases from the first diameter to the third diameter along a longitudinal axis of the fluid passage. The expansion portion connects the throat and the outlet and includes a substantially cylindrical chamber having the second diameter.

A pressure regulator includes a valve body that defines an inlet and an outlet for a fluid flow through the valve body, a poppet that is moveable within the valve body between an open position and a closed position to control the fluid flow from the inlet to the outlet, and a pressure regulating mechanism that controls a position of the poppet between the open and closed positions. The pressure regulating mechanism includes a diaphragm and a compression spring, and a force balance between the diaphragm and the compression spring determines the position of the poppet. The pressure regulating mechanism further includes a static pressure tap configured to apply a static pressure to the diaphragm, and a dynamic pressure tap configured to apply a dynamic pressure to the diaphragm. The dynamic pressure tap is located at an annular opening adjacent to the poppet, and an area of the annular opening varies with the position of the poppet to vary the dynamic pressure applied to the diaphragm.

A pressure regulator includes a valve body that defines an inlet and an outlet for a fluid flow through the valve body, a poppet that is moveable within the valve body between an open position and a closed position to control the fluid flow from the inlet to the outlet, and a pressure regulating mechanism that controls a position of the poppet between the open and closed positions. The pressure regulating mechanism includes a diaphragm and a compression spring, and a force balance between the diaphragm and the compression spring determines the position of the poppet. The pressure regulating mechanism further includes a static pressure tap configured to apply a static pressure to the diaphragm, and a dynamic pressure tap configured to apply a dynamic pressure to the diaphragm. The dynamic pressure tap is located at an annular opening adjacent to the poppet, and an area of the annular opening varies with the position of the poppet to vary the dynamic pressure applied to the diaphragm.

A pressure reducing valve includes a valve housing, plunger, pressure sensing cavity, and biasing member. The valve housing includes a valve inlet and valve outlet in selective fluid communication with each other. The plunger is in the valve housing and movable between a closed position and open position. The plunger is positioned downstream from the valve inlet and upstream from the valve outlet. The plunger includes a venturi and a channel. The venturi is within the plunger and has a venturi inlet and venturi outlet. The channel is within the plunger and is in fluid communication with the venturi. The pressure sensing cavity is in fluid communication with the channel. The biasing member exerts a biasing force on the plunger toward the open position. The channel is in fluid communication with the pressure sensing cavity to provide a fluid pressure that is lower than the outlet pressure during flow.

A flow control device including: a housing including a flow passage extending from an inlet, through the housing to an outlet; a hollow tube within the housing defining a tube passage included in the flow passage of the housing; a valve seat in the housing and disposed between the inlet to the flow passage and an inlet to the tube passage of the hollow tube; and a drain check shuttle within the housing and configured to move reciprocally with respect to both the housing and the hollow tube, wherein the drain check shuttle has: a first position within the housing at which the drain check shuttle abuts the valve seat, and closes a gap between the valve seat and the inlet to the hollow tube; and a second position displaced from the valve seat and which opens the gap.

A flow control device including: a housing including a flow passage extending from an inlet, through the housing to an outlet; a hollow tube within the housing defining a tube passage included in the flow passage of the housing; a valve seat in the housing and disposed between the inlet to the flow passage and an inlet to the tube passage of the hollow tube; and a drain check shuttle within the housing and configured to move reciprocally with respect to both the housing and the hollow tube, wherein the drain check shuttle has: a first position within the housing at which the drain check shuttle abuts the valve seat, and closes a gap between the valve seat and the inlet to the hollow tube; and a second position displaced from the valve seat and which opens the gap.

A control line stabilizer includes a body defining an inlet chamber, an outlet chamber, a passageway connecting the inlet chamber and the outlet chamber, a first seat, and a second seat. A disc is disposed in the passageway and is movable between a first closed position, in which the disc engages the first seat, an open position, in which the disc is spaced away from the first seat and the second seat, and a second closed position in which the disc engages the second seat. A first spring is disposed in the outlet chamber and is operatively coupled to the disc. A second spring is disposed in the inlet chamber and is operatively coupled to the disc. The disc restricts fluid flow through the passageway by moving to the first closed position and by moving to the second closed position.

The present disclosure relates to an inline sensor including a housing fixable in a wall of a fluid line or a process container. A first transducer for detecting a primary measurand of a medium contained in the fluid line or the process container is integrated into the housing and designed to generate first measurement signals dependent on the primary measurand. A sensor electronics is connected to the first transducer for detecting the first measurement signals and designed to process the first measurement signals. The inline sensor is additionally designed to detect pressure surges occurring in the process container.

The present disclosure relates to an inline sensor including a housing fixable in a wall of a fluid line or a process container. A first transducer for detecting a primary measurand of a medium contained in the fluid line or the process container is integrated into the housing and designed to generate first measurement signals dependent on the primary measurand. A sensor electronics is connected to the first transducer for detecting the first measurement signals and designed to process the first measurement signals. The inline sensor is additionally designed to detect pressure surges occurring in the process container.

An apparatus includes a safety shut-off valve for use with a gas regulator. The safety shut-off valve includes a housing, a valve rod, a vent chamber, and a vent line. The housing includes an interior chamber configured to regulated pressure in a fluid. The valve rod is disposed in the housing and controls a valve for interrupting the fluid in the internal chamber. The vent chamber receives ambient air and maintains pressure equalization of the ambient air and the fluid within a maximum pressure of the fluid. The vent line is disposed in a center of the valve rod and provides fluid communication of the ambient air between the vent chamber and an outside of the housing.