There are many types of vacuum valves, which can be divided into various types according to different classification standards. The following are some common types of vacuum valves:
First, classification by function
Low vacuum valve: suitable for vacuum system with low working pressure.
High vacuum valve: suitable for vacuum system with high working pressure.
Ultra-high vacuum valve: suitable for vacuum systems with extremely high working pressure, the requirements for sealing performance and materials are more stringent.
Second, according to the type of structure classification
Baffle valve: Through the rotation or translation of the baffle to control the flow of air.
Flap valve: Flap valve disc for rotating movement of the valve, can be used to cut off or connect the medium in the pipeline.
Disc valve: through the rotation of the butterfly plate to control the airflow on and off, compact structure, fast opening.
Baffle valve: The baffle is used to separate the air flow and realize the opening and closing of the air flow.
Gate valve: the opening and closing part of the gate valve is a gate plate, and the direction of motion of the gate plate is perpendicular to the direction of the fluid.
Needle valve: The needle valve spool is a very sharp cone, like a needle inserted into the seat, by rotating or lifting the needle valve to control the flow of air.
Slot valve: Through the insertion or withdrawal of the slot to control the flow of air.
Third, according to the driver classification
Manual valve: Through manual operation to control the flow of air on and off.
Electric valve: Through electric drive to achieve automatic control of air flow.
Pneumatic valve: The use of compressed air as a power source to drive valve action.
Solenoid valve: through the action of electromagnetic force to control the flow of air on and off.
Hydraulic vacuum valve: Through the hydraulic system to drive the valve action.
Fourth, by material classification
Metal vacuum valve: The valve body, seat and other key components are made of metal materials, with good mechanical properties and sealing performance.
Glass vacuum piston (Cock) : Piston vacuum valve made of glass material, suitable for sealing performance and material purity have high requirements.
Plastic valve: The valve body and other parts are made of plastic materials, suitable for occasions with high material cost requirements.
Fifth, classification by use
Stop valve: used to cut off or connect the medium in the pipeline, prevent the leakage of the air source, and ensure that the vacuum degree is maintained within the required range.
Isolation valve: Used to isolate the connection between the vacuum system and other systems to prevent cross-contamination.
Bleed valve: Used to bleed air into the vacuum system when needed to balance the pressure inside and outside the system.
Throttle valve: used to regulate the gas flow in the vacuum system to achieve accurate flow control.
Reversing valve: used to change the direction of the air flow to achieve the switch of the gas path.
Closed feed valve: Used to transport materials in a vacuum system while maintaining the vacuum of the system.
Sixth, other common vacuum valve types
Vacuum ball valve: has the advantages of simple structure, quick opening, good sealing performance, etc.
Vacuum regulator: Also known as flow control valve, used to regulate the flow of gas in a vacuum system.
High vacuum butterfly valve: suitable for high vacuum system, with good sealing performance and flow regulation function.
Electromagnetic vacuum with charging valve: through the electromagnetic force to control the air flow on and off, and has the inflation function.
Ultra-high vacuum flapping valve: Suitable for ultra-high vacuum systems, the sealing performance and material requirements are extremely high.
To sum up, there are many kinds of vacuum valves, and each valve has its specific structure, function and application scenario. When selecting a vacuum valve, it is necessary to comprehensively consider the specific process requirements and conditions of use.
