Pneumatic Actuated Valves

Functional Pneumatic Actuated Valves

The pneumatic actuated valve consists of multiple pneumatic springs, a pneumatic actuator, and a low-flow-resistance sleeve, allowing the use of air pressure to move the valve stem or control element. DomBor’s pneumatic actuated valves are designed to have a working temperature of -196°C to 800°C and can achieve optimum force or torque movement.


Each of our pneumatic actuated valves is produced per API 609, API 607, SIL3, CE, ISO 15848-1, GOST international standards, making them exportable to lucrative markets across the globe.

The Lowest-Cost Strategy Is To Choose Reliable DomBor Valves.

DomBor Valve, with its experienced specialists, specializes in manufacturing industrial valves and provides technical support and one-stop solutions for the global market.

Pneumatic Actuator Valve Manufacturer- Dombor

Pneumatic actuated valves control the pressure, rate, and amount of air as it moves through a pneumatic system. Dombor, a pneumatic valve manufacturer for two decades, offers high-quality and long-lasting pneumatic actuators in the market. 

Our pneumatic valves, consisting of multiple pneumatic springs, a pneumatic actuator, and a low-flow-resistance sleeve, allow air pressure to move the valve stem or control element. More than that, our pneumatic actuated valves are structured to work with a temperature range of -196°C to 800°C and achieve optimum force or torque movement. So get your pneumatic valves here at Dombor! We guarantee our products are produced per international standards.

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How does a Pneumatic Valve Work?

Industrial valves manufacturer Dombor supplies pneumatic valve that is responsible for regulating the flow of air in a pneumatic system. A pneumatic valve uses compressed air to close and open a valve. Pneumatic valves are one of the most common actuators. They are typically comprised of an adjusting screw, breather plug, spring, diaphragm assembly, bonnet, and stem.   


Their work starts with the adjusting screw putting pre-load on the spring to launch the valve in its fail position. The diaphragm, a key component, moves with the spring and holds air pressure, and without a pneumatic alert on it, the valve will remain in its fail position. Next, the breather plug lets the non-energized side of the diaphragm move freely without getting air locked. Then, the diaphragm pressurizes when the actuator receives a signal from a pressure pilot. 

Once the pilot senses upstream pressure, it sends an output signal through tubing into the valve’s actuator. As a result, the actuator actuates, driving the valve open or closed, depending on its configuration.

Features of pneumatic control valve

The pneumatic control valve is designed in Dombor pneumatic valve factory to protect your system from problems that may be caused by excessive air pressure. It has been designed to regulate the flow of pressure in your system. The flow control valves are made of high-quality materials that ensure the smooth flow of air in the system.


  • Air-flow management in one direction
  • Meter-in and meter-out flow control valve
  • Has directional control that enables easy change of pressurized air direction
  • Pressure control valves: pressure safety, pressure relief, and pressure reducing

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Types of pneumatic actuators for valves

There are different types of pneumatic actuators and different pneumatic valve manufacturers offer them in different forms. Here are three basic types of pneumatic actuators for valves:

  • Piston-style pneumatic actuator

The Piston style pneumatic actuator uses a piston that is inside a hollow cylinder. The piston moves when pressure is applied to the piston.

  • Diaphragm/spring-style pneumatic actuator

This type of pneumatic actuator utilizes a diaphragm and a spring. The diaphragm will move against a plate when it is pushed by compressed air.

  • Rotary vane style pneumatic actuator

This pneumatic actuator has two pressurized chambers that are separated by a paddle having an output shaft.

Applications of Dombor Pneumatic Valve

Dombor valve is one of the leading pneumatic valve suppliers that provides various valve solutions for many industrial applications. Dombor’s industrial ball valves, double offset butterfly valve, trunnion ball valve, pneumatic control valves, and others can be used in the below industries.


For better sealing performance in LNG Oil and Gas, you should consider using Dombor pneumatic ultra-low temperature valves that have special valve seats. Dombor pneumatic actuator valve is designed with resilient sealing materials to avoid internal leakage.

Pipeline Industry

Pneumatic actuated valves with scratch resistance, higher elasticity, and isolation characteristics are needed to reduce pipeline pressure loss. Dombor pneumatic valve manufacturer has the following features and can be used 

Refinery and Petrochemical Industry

Corrosion is inevitable in refineries and petrochemical facilities, therefore, Dombor pneumatic valves are specifically designed to prevent corrosion and withstand tough conditions found in refineries and petrochemical facilities.

Wastewater Treatment/Water Distribution

Dombor pneumatic actuated valves are used in wastewater treatment and water distribution to ensure the smooth flow of water in the pipelines and the removal of air from the water system. 

Marine and Ship

Marine and ships need Dombor pneumatic valves to ensure free flow in the onboarding system. Aside from liquid substances, this valve can also be used to transfer other substances like vapors, gases, semi-liquid mixtures, or slurries.

Power Generation

Dombor pneumatic valve solutions are very helpful for power generation projects. They are made of high-quality materials that offer constant functionality and enhanced durability in extreme weather conditions.

Pneumatic Valve Types Available in Dombor

Two-Way directional control pneumatic valves

Two-way directional valves are simple components that can help you save energy and money. These valves have an inlet and an outlet port, which can be open or closed. If the ports are open, air may move from the first port through the valve and the second port or opposite. 


Moreover, their flow systems may experience variable changes in temperature, flows, and pressures. As a result, these valves can lower total operating costs by reducing absorbed pumping power and running heating and cooling systems under shifting speeds.

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Three-Way directional control pneumatic valves

Three-way air control valves possess three ports, where each port serves a different purpose. The first port is used to link the valve to an actuator or another device. Then, there is the second port, which is connected to an airflow. The last port serves as an exhaust exit. 

If the first and second ports open while the third is closed, the air moves through the valve to the device. The actuator can vent exhaust when the first and third ports are open and the second port is closed. Three-way pneumatic valves are often used to connect actuators in cylinders or used in pairs and connect to double-acting cylinders.

Four-Way directional control pneumatic valves

Four-way directional control valves have four ports. Two are connected to actuators, another one relates to a pressurized airflow, and the last port serves as an exhaust pathway. An additional port is usually added to a four-way valve, making it a five-ported four-way valve. A four-way valve with an auxiliary port is used to provide dual pressure, which means the valve can apply one of two kinds of pressure and alternate between the two depending on what the application requires.

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Spring offset pneumatic valves

Spring offset pneumatic valve types refer to how airflow direction is switched. 


For instance, in a two-way directional valve, the valve is open or closed. For each port to assume an open or closed position, an actuator “actuates” or moves a valve spool into position. Then, a spring releases the valve spool and returns the pneumatic actuated valve to its prior position. A two-way directional control valve that functions in this manner is also called a spring offset valve.

Common Pneumatic Valve Functions


Flow Control

Pneumatic flow control valves help control the flow rate from the actuator, which converts the air pressure into motion. If cylinders are erratic or hard to control, it usually tells you something is wrong with the flow control valve. Flow control valves adjust the airflow management in one direction that lets the air ensureflow freely in the other direction. There are two major types of flow control valves. One is the meter-out valve, which controls the exhaust flow from the actuator, and the other is the meter-in valve, which restricts the airflow or gas to the actuator.


Pressure Control

Pressure control valves can protect the system from damages caused by excessive pressure. These pneumatic valves perform pressure control of a system, such as using a line relief valve to limit the maximum allowable system pressure. These valves are typically seen in hydraulic systems, and they can protect the hydraulic system. However, if the pressure in a system is not checked correctly, it could cause severe damages to the system, leading to a waste of time and money. There are three types of pressure control valves: pressure reducing, pressure relief, and pressure safety.


Directional Control

Pneumatic actuated valves also stop or change the direction of the pressurized air or gas. There are many types, but the most common ones are the two-way, three-way, and four-way directional valves.

Why Choose Pneumatic Valve Manufacturer Dombor?

Dombor is your most reliable pneumatic valve supplier. We have a trustworthy supply network, and we offer the latest production and assembly machinery.

Variety & Quality

Dombor supports many industrial applications because we manufacture an extensive range of high-quality pneumatic actuated valves, including spring offset, two-way directional, three-way directional, and four-way directional control pneumatic valves.

Customization service

We manufacture custom pneumatic valves to make sure that our industrial valve products fit your application standards and demand.


Our products and services comply with international certifications we obtained to guarantee we only produce the best and highest quality products and services to our clients.

Fast Shipping

As a motor-operated valves manufacturer, Dombor makes sure that we commit to our clients’ requested deadline because we understand the importance of adhering to the timeline required.

After Sales Service

Our service does not end with product delivery because we offer warranties and provide after-care customer service to our clients as part of our quality service.

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Generating high-quality valve solutions requires a deep insight into market needs. DomBor Valve, as a reliable valve manufacturer, relies on a trusted supply network, the latest production, and assembly machinery, along with digital design capabilities and 20 years of industry experience.

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