Vertical stainless steel pneumatic actuator is used to match kinds of angle journey valves, such as butterfly valve, ball valve. Install a position sensor and C-TOP can automatically control the valves. Widely applied to the workshop that have high request on environment. Such as in food processing, beverage, pharmacy, beer industries, etc.
The pneumatic stainless steel cylindrical actuator butterfly valve is a wide door that combines a pneumatic actuator and a butterfly valve. The main advantages of this valve are simple structure, small size, light weight, low cost, and the function of regulating the flow medium. The advantages of stainless steel pneumatic butterfly valves include smaller fluid resistance, large effective flow area when the large caliber pneumatic disc fully opens, rapid and effortless opening and closing, because the medium force of the disc hands on both sides of the rotating shaft is close to equal, and the torch generated is in the opposite direction, so the opening and closing torque is small, and good sealing can be achieved under low pressure.
In addition, the sealing materials of the stainless steel pneumatic butterfly valve are butyl rubber, fluorine rubber, edible rubber, etc., among which the hard seal butterfly threshold is soft and hard laminated metal sheet with the heavy advantages of metal hard seal and elastic seal, and has excellent sealing performance under low temperature conditions.
The pneumatic stainless steel cylindrical actuator is a kind of door with excellent performance and convenient operation, which is suitable for various working conditions.
This type of valve can be operated remotely by a pneumatic actuator. Electric or pneumatic actuator covert the axial movement of piston to be 90° rotation of valve shaft. So that the valve can be open or close to achieve the requirement of control and open/close for the pipeline system. They have three type of actuator : normally open (NO) , normally closed (NC), air/ air (A/A).
A pneumatic actuator valve is an essential component in modern industrial automation systems, designed to control the flow of gases, liquids, or semi-fluid media using compressed air as the driving force. In contrast to manually operated valves or electrically powered actuator valves, a pneumatic actuator valve offers faster response time, safer operation in hazardous environments, and greater reliability under extreme temperature or humidity conditions. For these reasons, pneumatic valves have become widely used in industries such as oil and gas, chemical processing, food and beverage, water treatment, pharmaceuticals, mining, power generation, and semiconductor manufacturing.
At its core, a pneumatic actuator valve converts the energy of compressed air into mechanical motion, allowing the valve to open, close, or modulate according to process demands. This automation eliminates the need for human intervention, increases production efficiency, and ensures consistent quality control in continuous processes. Modern pneumatic valve systems are engineered with advanced materials, precision machining, and smart control technologies to meet increasingly demanding industrial standards.
A pneumatic actuator valve uses compressed air provided by an industrial air compressor or a plant’s central air supply. The actuator receives a control signal—such as 3–15 psi, 4–20 mA, or a digital signal from a PLC—and translates the instruction into mechanical movement. Depending on the configuration, the valve may function as:
On/Off valve (fully open or fully closed)
Modulating valve (precise position control)
Fail-safe valve (spring return to a safe position)
Common operating principles include:
A spring-return or single-acting pneumatic actuator valve uses air pressure to move the valve in one direction, while an internal spring forces it back to the default “fail” position during air loss. It can be configured as:
Fail-open
Fail-closed
This is critical in safety-sensitive industries such as chemical and petrochemical plants.
The double-acting pneumatic actuator valve uses air pressure for both opening and closing, providing faster action, stronger torque, and more precise control. It is widely used in high-pressure pipelines and fast-cycling production lines.
This type is commonly used in ball valves and butterfly valves. It provides stable torque output and compact structure, making it ideal for most industrial applications.
This design delivers higher torque at both ends of the stroke, especially suitable for large-diameter ball valves and plug valves.
A typical pneumatic actuator valve consists of several key components:
Made from aluminum alloy, stainless steel, or carbon steel, designed for high corrosion resistance and durability.
The pneumatic actuator uses either piston-type or diaphragm-type mechanisms for linear or rotary motion.
Depending on application needs, valve bodies may include:
Ball valve
Butterfly valve
Globe valve
Diaphragm valve
Gate valve
Plug valve
An intelligent pneumatic positioner ensures precise modulation based on control signals.
Used for remote monitoring of valve position.
Provides air-direction control for the pneumatic actuator.
Ensures clean and stable compressed air supply.
Since the pneumatic actuator valve uses compressed air rather than electricity, it eliminates risks of electrical sparks. It is therefore ideal for explosive or flammable environments.
Pneumatic actuator valves deliver extremely fast open-close performance, often achieving:
Opening time: < 1 second
Cycle life: up to 1 million cycles or more
Compared with electric actuator valves, pneumatic systems are:
Less expensive to purchase
Less expensive to maintain
More robust in harsh conditions
The pneumatic actuator valve performs well in:
High-temperature environments
Low-temperature fields
Dusty environments
Corrosive pipelines
Suitable for controlling large-diameter industrial valves up to 80 inches or more.
Pneumatic actuator valves are a key part of engineering systems across multiple industries:
Used in upstream, midstream, and downstream operations for:
Wellhead control
Pipeline distribution
Refinery process control
Handles corrosive and toxic chemicals with reliable safety performance.
stainless steel pneumatic actuator valves ensure hygienic fluid handling.
Used in CIP/SIP systems, sterile fluid control, and production lines.
Automates filtration, distribution, and wastewater treatment processes.
Controls chilled water, steam lines, and air-handling systems.
Provides automated control in:
Cooling systems
Boiler feedwater piping
Turbine auxiliary systems
Manages slurry, dust suppression, and process water systems.
Provides bubble-tight sealing, ideal for gas and liquid blocking applications.
Lightweight, cost-effective, commonly used in ventilation, water, and chemical systems.
Designed for precise flow regulation in steam and high-temperature lines.
Widely used in pharmaceutical and hygienic environments.
Fast response and ideal for steam, air, and water control.
Used in high-pressure and large-volume flow pipelines.
Typical specifications of a pneumatic actuator valve include:
Actuator Type: Single-acting / double-acting
Valve Sizes: DN15–DN2000
Body Material: CF8, CF8M, WCB, duplex steel, PVC, CPVC
Pressure Rating: PN10–PN100 / Class 150–600
Temperature Range: –40°C to 250°C
Air Supply Pressure: 3–8 bar
Torque Output: 10–50000 Nm
Connection Standard: ANSI, DIN, JIS, ISO
Ensure correct air supply quality
Align valve and actuator centerlines precisely
Use proper mounting brackets and couplings
Test valve stroke before commissioning
Replace worn seals periodically
Check for leaks in air tubing
Keep actuator dry and corrosion-free
Lubricate moving components as needed
When choosing a pneumatic actuator valve, consider:
Media type: gas, liquid, corrosive fluid
Temperature and pressure
Valve function: on/off or modulating
Fail-safe requirements
Torque and speed
Certification needs: CE, SIL, ATEX, FDA
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