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HDL-011
HAIDE
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The valve body is the main body of a pneumatic safety valve, used to accommodate the medium and guide its flow. It is usually made of durable materials such as stainless steel or alloy steel to adapt to high pressure and harsh environments.
Valve core and valve seat
Valve core: The valve core is a key component of the valve, used to control the flow of the medium. It achieves sealing through a tight fit with the valve seat, and its shape and material determine the sealing performance and regulating characteristics of the valve.
Valve seat: The valve seat and valve core are tightly matched to achieve precise adjustment of fluid flow. The material and sealing design of the valve seat are crucial for preventing fluid leakage.
Pneumatic actuator
The pneumatic actuator is the power component of the pneumatic safety valve, responsible for converting the energy of compressed air into mechanical motion, thereby driving the valve core to move. Common executing agencies include:
Cylinder: It drives the piston movement through compressed air to open and close the valve.
Diaphragm actuator: uses a diaphragm to convert air pressure into mechanical force, suitable for situations where medium contamination needs to be avoided.
Spring
The spring acts as a reverse force in the pneumatic safety valve. When the air pressure decreases or the air source is interrupted, the spring will push the valve core back to its initial position, ensuring that the valve is in a safe state.
Control system
The control system is used to receive external signals and control the actions of the executing mechanism. Common attachments include:
Positioner: Receive external control signals (such as 4-20mA current signals) and ensure that the actuator can accurately move the valve core to the specified position.
Electromagnetic valve: used to control the on/off of the air circuit, achieving fast response.
Filter pressure reducing valve: used to purify compressed air and regulate pressure to ensure stable operation of pneumatic systems.
Guiding mechanism
The guiding mechanism ensures the stability and accuracy of the valve core during movement, avoiding any deviation or jamming that may affect the adjustment performance.
Seals and gaskets
Seals and gaskets are used to prevent gas leakage and ensure the sealing performance of the valve. High quality seals can improve the reliability and service life of valves.
High security
Non electric drive: Pneumatic safety valves use compressed air as a power source and do not rely on electricity, so they do not generate electric sparks or electromagnetic interference, making them particularly suitable for use in hazardous environments such as flammable, explosive, toxic, and harmful environments.
Quick response: The pneumatic actuator has a fast response speed and can quickly open the valve when the pressure exceeds the set value, releasing the pressure in a timely manner to avoid equipment damage or accidents.
Automatic reset: When the system pressure returns to normal, the pneumatic safety valve can automatically close without manual intervention, ensuring the safe operation of the system.
Strong reliability
Simple structure: The structure of pneumatic safety valves is relatively simple, mainly composed of valve body, valve core, pneumatic actuator, spring and other components, reducing the number of failure points and lowering maintenance costs.
High durability: Made of high-quality materials such as stainless steel, alloy steel, etc., it can withstand high pressure and harsh working environments, with a long service life.
Low maintenance requirements: Pneumatic systems are relatively simple, and daily maintenance mainly focuses on air source filtration and seal inspection, resulting in low maintenance costs.
Good energy-saving effect
No need for continuous power supply: Pneumatic safety valves only consume a small amount of compressed air when needed to operate, and do not require continuous power supply, making them more energy-efficient compared to electric safety valves.
Efficient use of energy: Compressed air systems are widely used in industry, and pneumatic safety valves can be well integrated with existing pneumatic systems without the need for additional energy supply.
High adjustment accuracy
Good adjustability: By adjusting the preload force of the spring or the air pressure of the pneumatic actuator, the opening pressure of the safety valve can be accurately set to meet the needs of different working conditions.
Positioner assistance: With a locator, pneumatic safety valves can achieve more precise control, ensuring the accuracy and stability of valve action.
Wide applicability
Suitable for multiple media: Pneumatic safety valves can be used for various media, including gases, liquids, steam, etc., suitable for multiple industries such as chemical, petroleum, natural gas, pharmaceutical, food processing, etc.
Multiple operating conditions adaptation: able to adapt to different working pressures and temperature ranges, from low pressure to high pressure, and from room temperature to high temperature environments.
Strong environmental adaptability
Corrosion resistance: The valve body and internal components are usually made of corrosion-resistant materials, which can adapt to acidic, alkaline, or corrosive media environments.
High temperature resistance: Some pneumatic safety valves can withstand high working temperatures and are suitable for high-temperature media applications.
Easy installation and maintenance
Easy installation: The installation of pneumatic safety valves is relatively simple, just connect the gas source and medium pipeline. Usually flange or threaded connections are used for quick installation.
Easy maintenance: The maintenance of pneumatic safety valves mainly focuses on the inspection and replacement of gas source filters and seals. Regularly checking the pressure and sealing performance of the gas source can ensure the normal operation of the valve.
Compliant with safety standards
Standardized design: The design and manufacturing of pneumatic safety valves comply with international and domestic safety standards (such as API, ISO, etc.) to ensure their safety and reliability during use.
Complete certification: Many pneumatic safety valves have passed third-party certifications (such as CE, UL, etc.), providing users with additional safety assurance.
High cost-effectiveness
Low initial cost: The structure of pneumatic safety valves is relatively simple, the manufacturing cost is low, and the initial investment is relatively small.
Low operating costs: Due to its energy-saving characteristics, it consumes less energy during operation, resulting in low long-term operating costs.
Low maintenance cost: low failure rate, simple maintenance, reduced downtime and repair costs.
Strong scalability
Modular design: Some pneumatic safety valves adopt modular design, which allows for the addition or replacement of components such as actuators and positioners according to user needs, facilitating upgrades and expansions.
Strong compatibility: It can seamlessly integrate with existing pneumatic and control systems without the need for additional modifications.
The valve body is the main body of a pneumatic safety valve, used to accommodate the medium and guide its flow. It is usually made of durable materials such as stainless steel or alloy steel to adapt to high pressure and harsh environments.
Valve core and valve seat
Valve core: The valve core is a key component of the valve, used to control the flow of the medium. It achieves sealing through a tight fit with the valve seat, and its shape and material determine the sealing performance and regulating characteristics of the valve.
Valve seat: The valve seat and valve core are tightly matched to achieve precise adjustment of fluid flow. The material and sealing design of the valve seat are crucial for preventing fluid leakage.
Pneumatic actuator
The pneumatic actuator is the power component of the pneumatic safety valve, responsible for converting the energy of compressed air into mechanical motion, thereby driving the valve core to move. Common executing agencies include:
Cylinder: It drives the piston movement through compressed air to open and close the valve.
Diaphragm actuator: uses a diaphragm to convert air pressure into mechanical force, suitable for situations where medium contamination needs to be avoided.
Spring
The spring acts as a reverse force in the pneumatic safety valve. When the air pressure decreases or the air source is interrupted, the spring will push the valve core back to its initial position, ensuring that the valve is in a safe state.
Control system
The control system is used to receive external signals and control the actions of the executing mechanism. Common attachments include:
Positioner: Receive external control signals (such as 4-20mA current signals) and ensure that the actuator can accurately move the valve core to the specified position.
Electromagnetic valve: used to control the on/off of the air circuit, achieving fast response.
Filter pressure reducing valve: used to purify compressed air and regulate pressure to ensure stable operation of pneumatic systems.
Guiding mechanism
The guiding mechanism ensures the stability and accuracy of the valve core during movement, avoiding any deviation or jamming that may affect the adjustment performance.
Seals and gaskets
Seals and gaskets are used to prevent gas leakage and ensure the sealing performance of the valve. High quality seals can improve the reliability and service life of valves.
High security
Non electric drive: Pneumatic safety valves use compressed air as a power source and do not rely on electricity, so they do not generate electric sparks or electromagnetic interference, making them particularly suitable for use in hazardous environments such as flammable, explosive, toxic, and harmful environments.
Quick response: The pneumatic actuator has a fast response speed and can quickly open the valve when the pressure exceeds the set value, releasing the pressure in a timely manner to avoid equipment damage or accidents.
Automatic reset: When the system pressure returns to normal, the pneumatic safety valve can automatically close without manual intervention, ensuring the safe operation of the system.
Strong reliability
Simple structure: The structure of pneumatic safety valves is relatively simple, mainly composed of valve body, valve core, pneumatic actuator, spring and other components, reducing the number of failure points and lowering maintenance costs.
High durability: Made of high-quality materials such as stainless steel, alloy steel, etc., it can withstand high pressure and harsh working environments, with a long service life.
Low maintenance requirements: Pneumatic systems are relatively simple, and daily maintenance mainly focuses on air source filtration and seal inspection, resulting in low maintenance costs.
Good energy-saving effect
No need for continuous power supply: Pneumatic safety valves only consume a small amount of compressed air when needed to operate, and do not require continuous power supply, making them more energy-efficient compared to electric safety valves.
Efficient use of energy: Compressed air systems are widely used in industry, and pneumatic safety valves can be well integrated with existing pneumatic systems without the need for additional energy supply.
High adjustment accuracy
Good adjustability: By adjusting the preload force of the spring or the air pressure of the pneumatic actuator, the opening pressure of the safety valve can be accurately set to meet the needs of different working conditions.
Positioner assistance: With a locator, pneumatic safety valves can achieve more precise control, ensuring the accuracy and stability of valve action.
Wide applicability
Suitable for multiple media: Pneumatic safety valves can be used for various media, including gases, liquids, steam, etc., suitable for multiple industries such as chemical, petroleum, natural gas, pharmaceutical, food processing, etc.
Multiple operating conditions adaptation: able to adapt to different working pressures and temperature ranges, from low pressure to high pressure, and from room temperature to high temperature environments.
Strong environmental adaptability
Corrosion resistance: The valve body and internal components are usually made of corrosion-resistant materials, which can adapt to acidic, alkaline, or corrosive media environments.
High temperature resistance: Some pneumatic safety valves can withstand high working temperatures and are suitable for high-temperature media applications.
Easy installation and maintenance
Easy installation: The installation of pneumatic safety valves is relatively simple, just connect the gas source and medium pipeline. Usually flange or threaded connections are used for quick installation.
Easy maintenance: The maintenance of pneumatic safety valves mainly focuses on the inspection and replacement of gas source filters and seals. Regularly checking the pressure and sealing performance of the gas source can ensure the normal operation of the valve.
Compliant with safety standards
Standardized design: The design and manufacturing of pneumatic safety valves comply with international and domestic safety standards (such as API, ISO, etc.) to ensure their safety and reliability during use.
Complete certification: Many pneumatic safety valves have passed third-party certifications (such as CE, UL, etc.), providing users with additional safety assurance.
High cost-effectiveness
Low initial cost: The structure of pneumatic safety valves is relatively simple, the manufacturing cost is low, and the initial investment is relatively small.
Low operating costs: Due to its energy-saving characteristics, it consumes less energy during operation, resulting in low long-term operating costs.
Low maintenance cost: low failure rate, simple maintenance, reduced downtime and repair costs.
Strong scalability
Modular design: Some pneumatic safety valves adopt modular design, which allows for the addition or replacement of components such as actuators and positioners according to user needs, facilitating upgrades and expansions.
Strong compatibility: It can seamlessly integrate with existing pneumatic and control systems without the need for additional modifications.
