Abstract: Control systems include various combinations of pressure regulators, pilots, and pressure stabilizers to provide systems with adjustable deadbands for over pressure protection, adjustable deadbands for under pressure protection, adjustable deadbands for both over pressure and under pressure protection, pressure assisted closure for over pressure protection, pressure assisted closure for under pressure protection, pressure assisted closure for both over pressure and under pressure protection, or spring assisted closure for over pressure and under pressure protection.

Abstract: A balanced valve trim, a regulator valve with a balanced valve trim, and methods for modifying a regulator valve with a balanced valve trim assembly to accommodate different volume flow rates through the regulator valve are disclosed.

Abstract: Fluid regulator systems having reset apparatus and methods are described herein. A fluid regulator system includes a fluid regulator including a loading chamber and a supply chamber. The supply chamber is in fluid communication with a supply fluid. The system includes a first fluid control device having a loading inlet and a loading outlet. The loading inlet receives a loading fluid from a loading fluid source and the loading outlet is in fluid communication with the loading chamber. The first fluid control device controls fluid flow between the loading fluid source and the loading chamber. A second fluid control device includes a vent inlet and a vent outlet. The vent inlet is in fluid communication with the loading outlet and the loading chamber and the vent outlet is in fluid communication with a vent. The second fluid control device to control fluid flow between the loading chamber and the vent.

Abstract: Control systems include various combinations of pressure regulators, pilots, and pressure stabilizers to provide systems with adjustable deadbands for over pressure protection, adjustable deadbands for under pressure protection, adjustable deadbands for both over pressure and under pressure protection, pressure assisted closure for over pressure protection, pressure assisted closure for under pressure protection, pressure assisted closure for both over pressure and under pressure protection, or spring assisted closure for over pressure and under pressure protection.

Abstract: Control systems include various combinations of pressure regulators, pilots, and pressure stabilizers to provide systems with adjustable deadbands for over pressure protection, adjustable deadbands for under pressure protection, adjustable deadbands for both over pressure and under pressure protection, pressure assisted closure for over pressure protection, pressure assisted closure for under pressure protection, pressure assisted closure for both over pressure and under pressure protection, or spring assisted closure for over pressure and under pressure protection.

Abstract: Control systems include various combinations of pressure regulators, pilots, and pressure stabilizers to provide systems with adjustable deadbands for over pressure protection, adjustable deadbands for under pressure protection, adjustable deadbands for both over pressure and under pressure protection, pressure assisted closure for over pressure protection, pressure assisted closure for under pressure protection, pressure assisted closure for both over pressure and under pressure protection, or spring assisted closure for over pressure and under pressure protection.

Abstract: A balanced valve trim, a regulator valve with a balanced valve trim, and methods for modifying a regulator valve with a balanced valve trim assembly to accommodate different volume flow rates through the regulator valve are disclosed.

Abstract: Fluid regulator systems having reset apparatus and methods are described herein. A fluid regulator system includes a fluid regulator including a loading chamber and a supply chamber. The supply chamber is in fluid communication with a supply fluid. The system includes a first fluid control device having a loading inlet and a loading outlet. The loading inlet receives a loading fluid from a loading fluid source and the loading outlet is in fluid communication with the loading chamber. The first fluid control device controls fluid flow between the loading fluid source and the loading chamber. A second fluid control device includes a vent inlet and a vent outlet. The vent inlet is in fluid communication with the loading outlet and the loading chamber and the vent outlet is in fluid communication with a vent. The second fluid control device to control fluid flow between the loading chamber and the vent.

Abstract: Fluid regulator systems having reset apparatus and methods are described herein. An example reset apparatus for use with a fluid regulator system includes a first valve having an inlet to receive a loading fluid and an outlet in fluid communication with a loading chamber of a fluid regulator, and a second valve having an inlet in fluid communication with the loading chamber of the fluid regulator and an outlet in fluid communication with a vent.

Abstract: Fluid regulator systems having reset apparatus and methods are described herein. An example reset apparatus for use with a fluid regulator system includes a first valve having an inlet to receive a loading fluid and an outlet in fluid communication with a loading chamber of a fluid regulator, and a second valve having an inlet in fluid communication with the loading chamber of the fluid regulator and an outlet in fluid communication with a vent.