A fluid regulator includes a poppet valve within a flow path that selectively allows a flow of fluid to move from an inlet to an outlet. A threaded regulating interface adjusts a spring tension exerted toward the poppet valve and defines a regulated flow of the fluid through the flow path. A fluid purge mechanism is positioned within the threaded regulating interface. The fluid purge mechanism operates along a rotational axis of the threaded regulating interface and adjusts a boundary of the flow path and manipulates the poppet valve to a maximum operating position to define a purging flow of the fluid. A programmable logic controller cooperates with the powered actuator and a pressure sensor to define a closed-loop interface that adjusts the regulated flow of the fluid through the flow path.

A control system for pressure controllers in explosion risk areas has a pressure controller with adjusting screw to control the pressure inside a conduit used to transport explosive gas. An adapter with a hole is adapted to receive the head of the adjusting screw. An electrical motor adapted to be used in risk explosion areas is provided with a driving shaft connected to the adapter. A support with body has a first end wherein a first hole is obtained to receive a shank of the pressure controller and a second end wherein a second hole is obtained to receive the adapter. A cable box connected to a telecommunication network is provided to remotely control the motor.

A pipeline-waste-gas reducer apparatus to reduce the amount of gas wasted by existing high-pressure pipelines having existing pipeline controllers and existing actuator-based control valves, by reducing the pressure of gas sent to existing pipeline controllers by a determined factor, consequently reducing the amount of gas wasted by the controllers, and then increasing control pressure returned by the controllers by the same factor, ensuring that the proper control pressure is sent to the existing actuator-based control valves.

A valve device includes a valve seat forming member, a case, a first O-ring, and a second O-ring. The valve seat forming member is fit into a passage defining and forms a valve seat. The case houses an electromagnetic solenoid and is connected to the passage defining member. The first O-ring is interposed between an inner circumferential surface of the passage defining member and an outer circumferential surface of the valve seat forming member. The first O-ring prohibits the fluid from flowing through a space between the passage defining member and the valve seat forming member when the main valve body seats on the valve seat. The second O-ring is interposed between the case and the passage defining member. The second O-ring prohibits the fluid from flowing from the passage to an outside of the passage defining member.

A pipeline-waste-gas reduction method to reduce the amount of gas wasted by existing high-pressure pipelines having existing pipeline controllers and existing actuator-based control valves, by reducing the pressure of gas sent to existing pipeline controllers by a determined factor, consequently reducing the amount of gas wasted by the controllers, and then increasing control pressure returned by the controllers by the same factor, ensuring that the proper control pressure is sent to the existing actuator-based control valves.

A safety valve control system may include a remotely operable control assembly, a first transducer, a valve assembly, and a compressor assembly in communication with the control assembly. The control assembly is operable to actuate the pump and valve assemblies to supply fluid to actuate the safety valve into open and closed positions, in response to one or more signals received from the first transducer. A method of operation may include maintaining the safety valve in an open or closed position while sensing a physical property with the control system; communicating a signal corresponding to the sensed physical property to the control system; and automatically closing or opening the safety valve in response to a comparison of the sensed physical property to a pre-set condition.

A safety valve control system may include a remotely operable control assembly, a first transducer, a valve assembly, and a compressor assembly in communication with the control assembly. The control assembly is operable to actuate the pump and valve assemblies to supply fluid to actuate the safety valve into open and closed positions, in response to one or more signals received from the first transducer. A method of operation may include maintaining the safety valve in an open or closed position while sensing a physical property with the control system; communicating a signal corresponding to the sensed physical property to the control system; and automatically closing or opening the safety valve in response to a comparison of the sensed physical property to a pre-set condition.

A pipeline-waste-gas reducer apparatus to reduce the amount of gas wasted by existing high-pressure pipelines having existing pipeline controllers and existing actuator-based control valves, by reducing the pressure of gas sent to existing pipeline controllers by a determined factor, consequently reducing the amount of gas wasted by the controllers, and then increasing control pressure returned by the controllers by the same factor, ensuring that the proper control pressure is sent to the existing actuator-based control valves.

A pipeline-waste-gas reduction method to reduce the amount of gas wasted by existing high-pressure pipelines having existing pipeline controllers and existing actuator-based control valves, by reducing the pressure of gas sent to existing pipeline controllers by a determined factor, consequently reducing the amount of gas wasted by the controllers, and then increasing control pressure returned by the controllers by the same factor, ensuring that the proper control pressure is sent to the existing actuator-based control valves.

A fluid-pressure regulator for regulating the pressure of a fluid. The regulator includes a variable-resistance fluid element and a variable-volume fluid element located downstream of the variable-resistance element. Pressure in the fluid at the outlet of the regulator is controlled by substantially simultaneously changing the resistance of the variable-resistance element and the volume of the variable-volume element. In one example, a decrease in pressure is effected at the outlet by simultaneously increasing the resistance of the variable-resistance element and increasing the volume of the variable-volume element. Some embodiments of the regulator are particularly useful to effect long-term and high-speed pressure changes in high-resistance fluidic channel networks.