Control Valves

Control valves don't just shut off flow—they modulate it. A ball valve opens or closes in a quarter turn; a control valve positions itself at 37%, 62%, or any point along the travel range to maintain the flow rate, pressure, temperature, or liquid level the process control loop demands. That continuous modulation is what separates throttling service from isolation service, and it dictates different trim geometry, different seat materials, different actuator response characteristics. FLOWKS manufactures linear stroke control valves with pneumatic and electric actuators for precise flow regulation across 1/2" through 12" sizes and Class 150–600 pressure ratings. V-ball control valves handle erosive, abrasive, and high-differential-pressure applications with characterised ball openings that combine shutoff capability with modulating control. Butterfly control valves—triple-offset designs—deliver tight shutoff plus throttling in large-diameter, low-pressure-drop service where linear stroke valves become impractical. Specialised configurations include self-actuated pressure regulators that operate without external power, fluorine-lined valves for concentrated acid service, bellows-sealed low-flow valves for toxic and fugitive-emission-sensitive applications, and labyrinth multi-stage pressure reduction trim that eliminates cavitation and flashing across extreme pressure drops. Every FLOWKS control valve starts with the process requirement—what media, what pressure drop, what flow characteristic, what emission standard—and builds the trim, body, and actuator configuration that matches.

FLOWKS control valves provide precise flow regulation, pressure control, and process modulation for oil & gas, petrochemical, chemical, power generation, and water treatment applications. Linear stroke control valves—pneumatic or electric actuated—deliver accurate throttling across 1/2"–12" sizes, Class 150–600, with equal-percentage or linear flow characteristics matched to process loop dynamics. V-ball control valves combine shutoff and modulating control through characterised V-shaped ball openings, with wear-resistant trim options including ceramic, hard alloy, and TCC coated configurations for erosive and abrasive service. High performance triple-offset butterfly control valves offer tight shutoff plus throttling capability in large-diameter, low-pressure-drop applications. Self-actuated pressure regulating valves operate without external power—process pressure itself drives the actuation mechanism for simple, reliable pressure control. Fluorine-lined control valves handle concentrated acid and aggressive chemical media where metal trim would corrode. Low flow regulating valves—including bellows-sealed configurations—provide precise trace-quantity regulation for analytical, sampling, and fugitive-emission-critical service. Labyrinth multi-stage pressure reduction control valves eliminate cavitation and flashing across extreme differential pressure drops through staged energy dissipation within the trim. Flow regulating valves optimise water treatment and distribution system performance with low-pressure-loss disc designs. FLOWKS control valves meet IEC 60534, ISO 15848, and API 608 standards with multiple body materials and trim configurations for every process condition.