SKU: ST
StarDrive SleeveSize 11mm to 46mm
Body Cast Steel
Function Star drive adaptor sleeve
Factory Accredited CE, ISO 9001, TUV
At Process Systems, we supply a wide range of actuators built for reliable, high-performance valve automation. Whether you're managing flow control, flow pressure, or process fluid across a complex system, our actuators deliver the control and precision you need.
We stock everything from electric actuators and pneumatic actuators to valve gear boxes, limit switch boxes and mounting accessories — ready for fast dispatch across Australia and the Pacific. Designed to handle the demands of mining, water treatment, power, and manufacturing, our products keep your operations running safely and efficiently. Explore the range online and order now for free standard shipping Australia-wide.
Actuators turn control signals into motion — opening, closing, or adjusting valves with accuracy and speed. They’re the driving force behind today’s most advanced control systems.
Here’s how actuators make a difference:
At Process Systems, we offer a complete range of 90-degree turn actuation options for valve automation, including double-acting and spring-return pneumatic actuators, electric actuators in all common voltages, gear boxes, limit switch boxes, and drive adaptors. Simply choose your product or category to get started.
You’ll find a full selection of 90-degree actuation solutions for quarter-turn valves, with all the accessories to match.
Electric actuators
These plug-and-play units are ideal for sites without air supply. Available in standard, modulating, spring return, and explosion-proof models.
Pneumatic actuators
Reliable and fast-acting, our pneumatic valve actuators are available in both double acting and spring return pneumatic types. Perfect for high-cycle and safety-critical tasks.
Rotary actuators
All our pneumatic and electric options are rotary actuators, making them ideal for ball, butterfly and plug valves.
Accessories and adaptors
Complete your setup with limit switch boxes, gearboxes, mounting brackets, and drive adaptors that fit most valve stem configurations.
Our actuators are meticulously crafted to adhere to the highest industry standards, delivering unmatched reliability and durability. If you have any queries, our dedicated team collaborates closely with you to tailor solutions that perfectly align with your unique requirements. You can also experience seamless and economical service with our same-day dispatch and free freight solutions exclusively for online orders.
Explore our range online or contact us to learn more about our products and solutions.
At Process Systems, we’ve been supplying high-quality valve actuators and automation solutions for over 30 years. Our range is trusted by engineers and operators across Australia and the Pacific for one simple reason: it works.
Whether you’re retrofitting a single actuator valve or managing a large-scale rollout, we help you find the right fit — fast.
We make valve automation simple. Whether you’re looking for fast-acting pneumatic actuators, reliable electric actuator options, or complete packages with limit switches and brackets, we’ll help you find the right solution.
Explore our full range online or get in touch with our team for tailored advice. With Process Systems, you get high-quality products, technical support, and fast delivery — all in one place.
SKU: ST
StarDrive SleeveSize 11mm to 46mm
Body Cast Steel
Function Star drive adaptor sleeve
Factory Accredited CE, ISO 9001, TUV
SKU: SK-100
Limit Switch Box for Pneumatic ActuatorFunction Limit Switch Box
Switches 2 x SPDT
Body Powder Coated Aluminium
IP Rating IP66
SKU: DA
Pneumatic Double Acting ActuatorSize 32mm to 270mm
Body Anodised Aluminium
End Caps Epoxy coated aluminium
Pinion Nickel Plated Steel
Fixings 316 Stainless Steel
Actuation Double Acting Pneumatic
SKU: ZT
Square Drive SleeveSize 11mm to 36mm
Body Cast Steel
Function Square drive adaptor sleeve
Factory Accredited CE, ISO 9001, TUV
SKU: 0M
Electric ActuatorTorque 35 to 3500 NM
Function Drive Open/Drive Close, 90 degree turn
Body Powder Coated Die Cast Aluminium
Voltage 12vDC, 24vDC, 24v AC, 110vAC, 240vAC
Rating IP67
SKU: SR
Spring Return Pneumatic ActuatorSize 50mm to 570mm
Body Anodised Aluminium
End Caps Epoxy coated aluminium
Pinion Nickel Plated Steel
Fixings 316 Stainless Steel
Actuation Spring Return Pneumatic
SKU: SSR
304 Stainless Steel Spring Return Pneumatic ActuatorSize 52mm to 210mm
Body 304 Stainless Steel
End Caps 304 Stainless Steel
Fixings 316 Stainless Steel
Actuation Spring Return Pneumatic
SKU: GB
Valve Gear BoxTorque 255 to 8000 Nm
Body FBE coated Cast Iron
Reduction 36:1 to 207:1
IP Rating IP67
Fixings 316 Stainless Steel
Shaft 316 Stainless Steel
SKU: 0MM
Modulating Electric ActuatorTorque 35 to 3500 NM
Function Modulating
Body Powder Coated Die Cast Aluminium
Voltage 24vDC, 24v AC, 110vAC, 240vAC
Rating IP67
SKU: RST
Rounded Star Drive to suit RotorkSize 11mm to 27mm
Body Cast Steel
Function Star drive adaptor sleeve for Rotork Actuators
Factory Accredited CE, ISO 9001, TUV
SKU: POS-A
Rotary Electro Pneumatic Positioner 4-20mA input/output. DA/SR ActuatorInput Signal 4 to 20mA
Output Signal 4 to 20mA
Body Aluminium
IP Rating IP66
SKU: SDA
304 Stainless Steel Double Acting Pneumatic ActuatorSize 52mm to 210mm
Body 304 Stainless Steel
End Caps 304 Stainless Steel
Fixings 316 Stainless Steel
Actuation Double Acting Pneumatic
SKU: ALS600M2EX
316 SS Limit Switch Box for Pneumatic Actuator IECExFunction IECex Limit Switch Box
Switches 2 x SPDT
Body 316 Stainless Steel
IP Rating IP66
SKU: GBC
Chain Wheel Drive Gear BoxTorque 255 to 8000 Nm
Body FBE coated Ductile Iron
Reduction 36:1 to 207:1
IP Rating IP67
Fixings 316 Stainless Steel
Shaft 316 Stainless Steel
SKU: DC
De Clutch Gear BoxTorque 300NM to 2800NM
Body Fusion Bonded Epoxy coated Ductile Iron
Shaft 316 Stainless Steel
IP Rating IP67
Actuation Manual Override For Spring Return Actuators
SKU: POS-D
Digital Smart Electro Pneumatic Positioner 4-20mA in/out - Double Acting ActuatorInput Signal 4 to 20 mA
Output Signal 4 to 20 mA
Body Powder Coated Die Cast Aluminium
IP Rating IP66
Function Suit Double Acting Actuators (Spring Return by request)
SKU: DT
Double D to Star Drive AdaptorSize 17mm to 36mm
Body Cast Steel
Function Star drive to Double 'D'
Factory Accredited CE, ISO 9001, TUV
SKU: VSL
Duplex Stainless Steel Valve Safety LockoutMounting Interface F05 to F16
Drive Size 7mm to 46mm
Body 2205 Duplex Stainless Steel
Function Valve Lockout
SKU: 0ME
Explosion Proof Electric Actuator IECExTorque 35 to 1500 NM
Function Drive Open/Drive Close, 90 degree turn
Body FBP coated Die Cast Aluminium
Voltage 12vDC, 24vDC, 24v AC, 110vAC, 240vAC
Rating IP68
SKU: ALS500M2EX
Hazardous Area Limit Switch Box for Pneumatic Actuator IECExFunction IECex Limit Switch Box
Switches 2 x SPDT
Body Powder Coated Aluminium
IP Rating IP66
SKU: KD
Key Way to Star Drive AdaptorSize 17mm to 46mm
Body Cast Steel
Function Star Drive to Key Way
Factory Accredited CE, ISO 9001, TUV
SKU: POS-LIN
Linear Electro Pneumatic PositionerInput Signal 4 to 20mA
Output Signal 4 to 20mA
Body Aluminium
IP Rating IP66
What does an actuator do?
An actuator moves a valve open, closed, or to any point in between. It receives a signal from your system and turns that into mechanical motion — typically 90 degrees for quarter-turn valves.
What’s the difference between electric and pneumatic actuators?
Electric actuators use power to drive valve movement. They’re great for remote or standalone systems.
Pneumatic actuators use compressed air, offering fast, reliable action in high-cycle environments.
What is a double-acting actuator?
A double-acting pneumatic actuator uses air to move the valve in both directions — open and close. It’s efficient and ideal when a fail-safe shutdown isn’t needed.
When should I choose a spring return actuator?
Go with spring return when you need the valve to automatically return to a safe position if air or power is lost. It’s a common setup for fail-safe operation.
What type of actuator is best for modulating control?
Use a modulating electric actuator if you want smooth, variable control from an electrical signal.
Pair a pneumatic actuator with an electro-pneumatic positioner to achieve modulating control using air pressure.
Can I automate a manual valve?
Yes. With the right brackets, adaptors and gear boxes, most manual valves can be upgraded with an actuator. We stock everything you need to get it done.
What is a limit switch box?
A limit switch box gives feedback on the valve's position. It’s essential for remote monitoring and system integration.
Do you supply actuators for hazardous areas?
Yes. We stock IECEx-rated electric actuators and limit switch boxes designed for use in hazardous or explosive environments.
What is a rotary actuator?
A rotary actuator turns the valve, usually 90 degrees. This makes it the go-to choice for quarter-turn valves, such as ball or butterfly types.