AQ Process Systems sources and exports complete actuated valve packages, combining valves from our full product range with pneumatic, electric, or hydraulic actuators. Every package is assembled, tested, and calibrated before shipment, eliminating site assembly and ensuring reliable first-time operation.
We match the actuator type and size to the valve torque/thrust requirements, fail-safe direction, and operating conditions. Accessories include positioners (pneumatic, electro-pneumatic, or smart/digital), solenoid valves, limit switches, air filter/regulators, and handwheel overrides.
For safety-critical applications (SIL-rated), we supply actuated valve assemblies with SIL-certified components, partial stroke testing capability, and proof test documentation, supporting your functional safety programme.
| Product | Specification | Description |
|---|---|---|
| Pneumatic Actuated | ||
| Pneumatic On/Off Valve Packages | Spring-return or double-acting | Fail-open or fail-close | Quarter-turn or linear pneumatic actuated valves for automated on/off control, with solenoid and limit switches. |
| Pneumatic Modulating Valve Packages | With positioner | 4-20mA input | Modulating control | Pneumatic actuated control valve packages with positioner for continuous modulating service, complete with all accessories. |
| Electric Actuated | ||
| Electric On/Off Valve Packages | Multi-turn or quarter-turn | Fail-safe options | Electric actuated valves for automated on/off service, with torque limiting, position indication, and local/remote control. |
| Electric Modulating Valve Packages | With integral positioner | 4-20mA | Modulating | Electric actuated control valve packages for modulating service, precise positioning without instrument air supply. |
| Specialty | ||
| SIL-Rated Actuated Valve Assemblies | SIL 2/3 certified | Partial stroke capable | Safety instrumented system (SIS) actuated valve assemblies with SIL-certified components, tested and documented for functional safety. |
| Emergency Shutdown (ESD) Valves | Fast-close | Fire-safe | SIL certified | Emergency shutdown valve packages with fast-closing actuators, fire-safe valves, and SIL-certified solenoids for process safety applications. |
Pneumatic: spring-return (fail-safe) or double-acting, for both quarter-turn and linear valves. Electric: multi-turn (gate/globe valves) or quarter-turn (ball/butterfly valves), with battery or spring fail-safe options. Hydraulic: for very high thrust requirements or where air supply is unavailable (e.g., subsea). We match the actuator type to your application requirements.
Yes. Every actuated valve package is supplied as a complete assembly, valve, actuator, mounting kit, solenoid, limit switches, positioner (if modulating), air set, and handwheel. Packages are factory-assembled, stroked, calibrated, and tested before shipment.
A fail-safe actuator automatically moves the valve to a predetermined safe position (open or closed) when the actuating signal or power is lost. For pneumatic actuators, a spring returns the valve to the safe position when air supply fails. For electric actuators, a battery or spring mechanism provides the fail-safe action.
Yes. We supply actuated valve assemblies for Safety Instrumented Systems (SIS) with SIL-certified components, including SIL-certified solenoid valves, positioners with partial stroke testing, and valve/actuator combinations with documented failure rate data (SFF, PFD). Documentation includes a SIL capability assessment for the complete assembly.
Yes. We supply actuator retrofit kits, including the actuator, mounting bracket, coupling, and accessories, designed to fit existing manual valves. This converts a manual valve to automated operation without replacing the valve body. We need the valve manufacturer, model, and size to specify the correct retrofit kit.
Share your valve specification, size, pressure class, material, end connections, we respond within 24 hours.