Abstract: A liquid level controller system and process wherein the liquid level controller is attached to a separator vessel so as to monitor fluid level within the separator vessel. The liquid level controller is configured such that hydrocarbon deposits, which hydrocarbon deposits build up in the d displacer arm chamber of the level controller, and be cleaned out without disconnecting the liquid level controller from the separator vessel and without disconnecting the displacer arm assembly from the pilot assembly.

Abstract: A liquid level controller system and process wherein the liquid level controller is attached to a separator vessel so as to monitor fluid level within the separator vessel. The liquid level controller is configured such that hydrocarbon deposits, which hydrocarbon deposits build up in the d displacer arm chamber of the level controller, and be cleaned out without disconnecting the liquid level controller from the separator vessel and without disconnecting the displacer arm assembly from the pilot assembly.

Abstract: A pneumatic switch is provided for the pneumatic control of process control components, such as valves and compressors. The pneumatic switch utilizes a slide bar operationally connected to a waggle arm to control valves, which control the introduction of compressed gas to the process control components.

Abstract: A pneumatic switch is provided for the pneumatic control of process control components, such as valves and compressors. The pneumatic switch utilizes a slide bar operationally connected to a waggle arm to control valves, which control the introduction of compressed gas to the process control components.

Abstract: The current invention relates to motor valves and actuators associated with such motor valves. More particularly, the current invention relates to an electro-hydraulic positioner for such actuators so that the valve can be opened, closed or partially opened. The invention also relates to a method for positioning an actuator for a motor valve. The method utilizes a hydraulic liquid.

Abstract: This disclosure describes an automatic adjusting natural gas dehydration system. The dehydration system includes a still column, a reboiler, a pump and an absorber column suitable for circulating a desiccant, The absorber column includes inlet and outlet ports for receiving a stream of natural gas. The method automatically adjusts the flow rate the desiccant and the temperature of the desiccant within the reboiler in response to the moisture content of the natural gas exiting the absorber column after contacting the desiccant.

Abstract: A pilot valve is switchable between snap and throttle modes. The pilot valve supplies output gas to a process control valve and has an adjustable biasing member for applying an adjustable force to a pilot plug in a pilot body interior. An opposed force is applied to the pilot plug to overcome the adjustable force and the output gas.

Abstract: A liquid level controller including a pilot valve switchable between snap and throttle modes. A displacer translates changing liquid level in a tank into movement that is transferred to the pilot valve which will provide output gas to a control valve to allow or to prevent the discharge of fluid from the tank. The pilot valve has a throttle supply inlet and a snap supply inlet and a single output passage. When the pilot valve is in the throttle mode, the snap supply inlet is a vent passage and when the pilot valve is in the snap mode, the throttle supply gas inlet is a vent passage.