Abstract: A control system for controlling hydrocarbon flow from a well includes a hydrocarbon module and a separate control module. The hydrocarbon module includes one or more flow passages communicating with the flow of hydrocarbons from the well. Valves are disposed in the flow passages for opening and closing the passages to flow. Each valve includes a valve member having an open and a closed position. A biasing member is provided for biasing each valve member to the closed position. The control module is positioned adjacent the hydrocarbon module and includes an actuator member for each of the valve members. The valve member and actuator member are end to end such that the actuator member may be actuated to move the valve member to the open position. The valve members and actuator members engage along a common interface so as to allow the removal of the control module without removing the hydrocarbon module.

Abstract: A combination composed of a conduit for conveying a fluid medium along a linear path under very high pressure and a choke disposed in the conduit, the conduit having an inner wall and the choke being composed of a restrictor having a restrictor opening which is constricted relative to the cross section of the conduit and a movable needle mounted for movement in the direction of the linear path for constricting or closing the restrictor opening. The conduit is made of a material capable of withstanding the high pressures exerted on the inner wall of the conduit by the flowing medium and the choke is made of a very hard and brittle material which is resistant to wear. The choke further includes a central insert member having an outer tubular part fastened to the inner wall of the conduit, an inner part supporting the needle within the conduit so that fluid medium flowing through the conduit flows around the needle, and a member connecting the inner part to the outer part.