Discussion on the instability and vibration of pneumatic control valves.
The action of pneumatic actuator control valve is unstable: 1. Unstable air source pressure. 1) Compressor capacity is too small; […]
Discussion on the problems of non-action of pneumatic control valves.
Pneumatic control valve does not operate: 1. No signal, no air source. 1) The air source is not open; 2) […]
Introduction of electric actuators.
Electric actuators are mainly use in power plants or nuclear power plants. Because a smooth, stable and slow process is […]
Causes and solutions of vibration of pneumatic actuators.
Pneumatic actuators are a kind of classification in actuators. From the perspective of technical performance, the advantages of pneumatic actuators […]
Inspection standards and methods for pneumatic actuators.
1. Fix the pneumatic actuator on the test table and connect the air source, control air source and displacement detection […]
Preparation of pneumatic actuators before inspection.
Pneumatic actuators also known as pneumatic head pneumatic head, is driven by air pressure to open and close or adjust […]
How to solve the problem of slow response of AT pneumatic actuators?
The use of AT pneumatic actuators sometimes shows a slow reaction, which undoubtedly greatly affects the working efficiency of AT […]
Classification of pneumatic actuators.
Pneumatic actuators are driven by air pressure to open and close or adjust the valve actuators, commonly known as pneumatic […]
Function of valve positioner and classification.
Valve positioner is the main accessory of pneumatic actuator control valve. It takes stem displacement signal as input feedback measurement […]
The main embodiment of diversification and energy-saving development of pneumatic actuators.
Actuators have pneumatic and electric two forms, usually we understand more about pneumatic actuators. But pneumatic actuators from the technical […]
Working principle of pneumatic valve.
Pneumatic valves in regulating valve are characteristic of the valve. Because of the pneumatic valve is connect to the pneumatic […]
How to solve the problem of pneumatic valve opening and closing jitter?
The more and more widely used pneumatic valve is a good proof of this point, with the widespread use of […]
Pneumatic actuators have three major self-protection functions.
Pneumatic actuators as an important equipment, in many industries have a good use. It can use for all kinds of […]
How to improve the switching speed of AT pneumatic actuators？
As the speed of AT pneumatic actuators increases, the impact of actuators and valves in the off or open position […]
Advantages and disadvantages of pneumatic components.
Advantages: 1. Pneumatic device is simple in structure, light in weight, simple in installation and maintenance. The medium is air, […]
Common faults in hydraulic system.
1. Pressure loss. Because liquids are viscous and have friction when flowing in pipelines, they must lose some energy in […]
Advantages and disadvantages of hydraulic system.
Advantages and disadvantages of hydraulic system. Hydraulic valves are widely used in water, steam, sewage, papermaking, petrochemical industry, solution and […]
Application of hydraulic control valve.
The hydraulic control slow closing ball valve features small flow resistance coefficient, high degree of automation, complete functions, stable and […]
The characteristics of explosion-proof electric actuator performance.
1. Shell. The shell is made of hard aluminum alloy, anodized and polyester powder coated, with strong corrosion resistance, protection […]
Notes for valve test pressure.
Notes for valve test pressure. (1) Generally, strength test is not require for valves, but strength test shall conduct for […]
Operating requirements for electric actuators.
Operating requirements for electric actuators. 1. Equipment environmental requirements. This PL series valve electric actuators can be used indoors or […]
Notes for installation of electric actuator and valve.
Notes for installation of electric actuator and valve. 1. Manually turn the valve to check that there is no abnormal […]
Application field of electric actuators.
Electric actuators are mainly used in the following three fields. 1. Power plant. Typical applications are: ① Application in thermal […]
Important parameters of electric actuators.
1. Stroke of electric actuator. This parameter is also an important parameter. For the angle stroke electric actuator, the stroke […]
The structural form of the electric actuators.
According to the movement mode of the controlled object, the electric actuator can divide into the following structural types: straight […]
How to protect the valve from corrosion?
Corrosion is one of the important elements that cause valve damage. Therefore, in valve protection, valve anti-corrosion is an important […]
Characteristics and selection of various valve driving devices.
Valve drive mode： According to the movement mode of the driving mechanism, the valve driving device is divided into two […]
How to operate valves correctly?
For valves, not only installation and regular maintenance, but also operation. Generally, the opening and closing of the valve shall […]
Maintenance of valve in use.
During the use of the valve, attention should be paid to the maintenance. Good maintenance can ensure the reliable operation […]
Cause and maintenance of overload of electric actuators.
Overload may occur if: 1. The power supply voltage is low, and the required torque is not obtain. So that […]
The selection principle of electric actuator.
In general, the correct choice of electric actuator is based on the following: 1. Operating torque. Operating torque is […]
Main valve standard: DIN standard or EN standard.
At present, the international each country for the use of the valve standards are not the same. Because of the […]
Difference between electric butterfly valve and electric gate valve.
Electric butterfly valve definition: Electric butterfly valve is one of the most commonly used valves in industrial pipelines. Butterfly […]
Notes for use of telescopic flange butterfly valve.
Flange retractable butterfly valve , not only for the valve disassembly and assembly to bring convenience. And can relieve […]
Structure characteristics and basic principle of ventilation butterfly valve.
Ventilation butterfly valve is a kind of non closed butterfly valve. The ventilation butterfly valve is use in the dust […]
Selection of electric actuator for electric butterfly valve.
As the electric butterfly valve is compose of butterfly valve and electric device. How to select the electric device correctly […]
Introduction of PVC butterfly valves.
Introduction of PVC butterfly valves. PVC butterfly valve is plastic butterfly valve. Plastic butterfly valve has strong corrosion resistance, wide […]
Common troubleshooting methods in the operation of electric butterfly valve.
Common troubleshooting methods in the operation of electric butterfly valve. 1. Before the installation of electric butterfly valve, confirm whether […]
Analysis of common faults of the newly installed electric butterfly valve.
Analysis of common faults of the newly installed electric butterfly valve Electric butterfly valve is the main control butterfly valve […]
Characteristics of electric butterfly valve gear drive.
Characteristics of electric butterfly valve gear drive. 1) Instantaneous transmission ratio is stable. Work stability is high. 2) Non-circular gear […]