Flow Control Valves

Linear-motion valves with a plug-and-seat trim moving perpendicular to the seat, offering precise modulation and a wide range of characterized trims. They are the most common throttling valve for general process and critical service in oil and gas.

Quarter-turn valves whose closure member rotates rather than strokes linearly, including high-performance butterfly and eccentric-plug designs. They provide high flow capacity and lower cost in a compact body for larger-bore modulating duties.

Rotary valves using a contoured V-port ball segment to produce an approximately equal-percentage flow characteristic with high rangeability. They suit slurry, fibrous, and sticky media where a shearing action helps keep the seat clean.

Control valves fitted with cage or labyrinth trim that drops pressure across several stages to limit velocity, cavitation, flashing, and noise. They are used for high-pressure-drop critical service such as choke and let-down applications.

Globe-style valves in which the plug is guided by and throttles through a perforated cage, giving stable operation and easily interchangeable trim characteristics. The cage design simplifies maintenance and supports balanced-plug configurations for high differential pressure.

Valves whose trim is balanced to reduce the actuator force needed against high upstream pressure, often rated to API 6A or high ANSI/ASME pressure classes. They are applied at wellheads, manifolds, and gas-processing service with elevated line pressures.

Devices that inject finely atomized water into superheated steam or vapor to reduce its temperature to a controlled setpoint. They are used in refinery and process-utility steam systems to protect downstream equipment.

The pneumatic, electric, or electro-hydraulic drives and feedback positioners that stroke the valve trim to a commanded position. Positioners convert a control signal into precise stem travel and provide diagnostics and characterization for retrofit and modulating duty.