Pneumatic control valve refers to various pneumatic components that control the pressure, flow and flow direction of air flow in the pneumatic system and ensure the normal operation of pneumatic actuators or mechanisms. The element that controls and regulates the pressure of compressed air is called a pressure control valve.
The element that controls and regulates the flow of compressed air is called a flow control valve. An element that changes and controls the direction of airflow is called a directional control valve.
The following introduces the functions, types, and usage scenarios of three types of valves：
The function of the Pressure Control Valve is to regulate and stabilize the air pressure in the system, prevent the air pressure from being too high or too low, and ensure the safety of the system and the normal operation of the equipment.
There are three common types of Pressure Control Valves:
Pressure Regulator: Stabilize the input high-pressure gas to a set low-pressure output.
Relief Valve: Automatically opens when the system pressure exceeds the set value, releasing excess gas.
Sequence Valve: Control multiple actuators to act in sequence according to the set pressure.
The typical application of Pressure Control Valve is in pneumatic systems with precise pressure requirements, such as clamping and pressing equipment.
The function of Flow Control Valve is to control the flow rate of gas passing through, thereby adjusting the speed of the actuator cylinder action.
There are two common types of Flow Control Valves:
One way Flow Control Valve: restricts flow in one direction and allows free flow in the other direction.
Throttle Valve: Flow regulation in both directions.
Flow Control Valve is typically used to regulate the extension and retraction speed of cylinder push rods, achieving smooth and energy-saving operation.
The function of directional control valve is to control the on/off and flow direction of compressed air, determining the direction of cylinder movement or whether to move.
There are four common types of directional control valves:
2/2 valve: two ports, two positions (on/off)
3/2 valve: Three ports (intake, exhaust, exhaust), two positions
5/2 or 5/3 valve: commonly used to control the telescopic action of double acting cylinders
Typical applications of directional control valves in automation equipment include controlling single/double acting cylinders, pneumatic motors, etc
Common pneumatic control valves mainly include angle seat valve, pneumatic drain valve, pneumatic filling valve, pneumatic globe valve, pneumatic actuator, pneumatic actuator ball valve, pneumatic three-way ball valve, quick exhaust valve, pneumatic diaphragm valve, etc.
Our pneumatic control valves have characteristics of compact structure, light weight, easy installation, high operating frequency, long service life and stable working performance.
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