Wholesale Stainless Steel Pneumatic Valve Actuator

A rack and pinion pneumatic actuator is a device that converts the pressure energy of compressed air into mechanical energy. It is mainly used to drive valves and other equipment for switching or regulating operations. Here are some key features of rack and pinion pneumatic actuators:
Structural features: Rack and pinion pneumatic actuators use the meshing method of gears and racks to achieve precise linear motion. This structure is simple and the action is smooth and reliable.
Application areas: They are widely used in production processes with high safety requirements, such as power plants, chemicals, and oil refining industries, because they have safety and explosion-proof characteristics.
Design advantages: Rack and pinion actuators are usually compact in design and suitable for butterfly valves, plug valves or ball valves, providing double-acting and spring return functions.
Performance characteristics: Rack and pinion actuators with 100-degree stroke, limit stops in both directions of stroke, ISO mounting platform driven by star gears for standard valve accessories, and auxiliary equipment brackets.
Material selection: The cylinder material of the actuator may be aluminum alloy or stainless steel to adapt to different working environments and corrosion resistance requirements.
Output torque: Rack and pinion pneumatic actuators can provide stable output torque, ranging from very small to very large (e.g. 0-8000N.m).
Rack and pinion pneumatic actuators play an important role in industrial automation and process control due to their structural stability and reliability.

The scotch yoke pneumatic actuator is an angular stroke piston actuator, which is mainly used to control valves with a 90° rotation angle, such as ball valves, butterfly valves, plug valves, etc. The following are some key features and applications of scotch yoke pneumatic actuators:
Working principle: The scotch yoke pneumatic actuator enters the cylinder through compressed air, pushes the piston to move linearly, and then converts the linear motion into the rotational motion of the scotch yoke through the design of the piston pin and the scotch yoke U-shaped groove, thereby realizing the control of the valve.
Type: According to the different types of action, scotch yoke pneumatic actuators can be divided into single-acting and double-acting. The closing action of the single-acting actuator is completed by spring reset, while the switching action of the double-acting actuator is completed by air source drive.
Structure: The scotch yoke pneumatic actuator usually refers to a pneumatic actuator with a structure of "single cylinder double piston-variable torque scotch yoke", which has a symmetrical and inclined steel scotch yoke mechanism, which can provide different torque output characteristics.
Application: It is suitable for occasions where large torque output is required, especially when the torque requirement is higher than 7000Nm, the scotch yoke actuator is more cost-effective than the gear rack actuator.
Material: Scotch fork pneumatic actuators can be divided into aluminum alloy type, stainless steel type, carbon steel type, etc. according to the main material to adapt to different industrial environments and corrosion resistance requirements.
Performance characteristics: The inclined steel yoke mechanism of the high-power yoke pneumatic actuator has a very high starting torque and a low operating torque, which is suitable for the control of butterfly valves; while the symmetrical steel yoke mechanism has a more balanced torque curve, which is mainly suitable for the control of ball valves and plug valves.
Scotch fork pneumatic actuators play an important role in the field of industrial automation and process control due to their high torque output and adaptability.

Solenoid valves, limit switches, filters and positioners are all common components in the field of industrial automation, each of which has different functions and roles.
Solenoid valve:
Solenoid valve is a device that uses electromagnetic force to control the opening and closing of valves, and is widely used in the switch control of media in pipelines.
They can be divided into many types according to different structures and principles, such as direct-acting diaphragm structure, step-by-step direct-acting diaphragm structure, pilot diaphragm structure, direct-acting piston structure, etc.
The selection of solenoid valves needs to consider factors such as working pressure difference, environmental conditions, power supply conditions, control accuracy and reliability.
Solenoid valves are suitable for a variety of control occasions, especially where fast switching and high safety performance are required.
Limit switch:
Limit switch is a device used to detect the movement position of mechanical equipment and control the on and off of the circuit. It is often used for limit and program control of machine tools and other production machinery and automatic production lines.
They are usually divided into general-purpose travel switches and travel switches for lifting equipment, with different technical parameters and application scenarios.
The components of limit switches include built-in microswitch drive mechanism, sealing rubber, contact material, etc., and mechanical strength and environmental adaptability need to be considered during design.
Filter:
A filter is a device installed on a pipeline to filter impurities from the medium and protect downstream equipment and process flows.
The filter consists of a cylinder, a filter screen, a sewage discharge part, a transmission device and an electrical control part. It can be a precision filter, using different filter elements to achieve the required water quality standards.
Filters are widely used in industries such as chemical, pharmaceutical, and food processing to ensure the cleanliness of the medium and the stable operation of the system.
Positioner:
A positioner is a device used to accurately control the opening of a valve. It can receive signals from the control system and convert them into the corresponding position of the valve.
Positioners can be pneumatic or electric, and are usually used in conjunction with actuators (such as pneumatic or electric actuators) to achieve precise control of valves.
In automated control systems, positioners help improve control accuracy and response speed, ensuring the stability and reliability of process control.
These components play a key role in industrial automation and process control, ensuring the efficient, safe and precise operation of equipment and systems.