New Original Pressure Regulator Suction Control Valve 0 281 002 534 SCV Valve for Auto Spare Parts 0281002534

Pressure Valve is a pressure valve, which has different types in different systems, mainly including overflow valve, pressure reducing valve, sequence valve, etc. Its function is generally to control and adjust the system pressure, ensure system safety and realize specific action sequence, etc. The following is a detailed introduction:

In hydraulic system
Overflow and pressure stabilization
Relief valve: The main function is to maintain the system pressure basically constant. When the system pressure reaches the set pressure of the overflow valve, the overflow valve opens and discharges part of the oil back to the oil tank, so that the system pressure no longer rises, thereby stabilizing the system pressure and preventing excessive pressure from causing damage to the system. For example, in the hydraulic system of a hydraulic crane, the overflow valve can ensure that the system pressure does not exceed the safety value during lifting, amplitude change and other actions, ensuring the safe and stable operation of the crane.

Pressure reduction and pressure regulation
Pressure reducing valve: It can reduce the higher pressure of the system to a stable lower pressure to meet the different pressure requirements of a branch circuit or a specific component in the system. For example, in a hydraulic clamping device, the pressure reducing valve can reduce the high-pressure oil in the main oil circuit and supply it to the clamping cylinder, so that the clamping force is moderate, which can ensure reliable clamping of the workpiece and will not damage the workpiece due to excessive pressure.

Sequence control
Sequence valve: can control the action sequence of multiple actuators according to the change of system pressure. When the system pressure reaches the set value of the sequence valve, the sequence valve opens to allow the oil to enter the next actuator to realize the sequential action of the actuator. For example, in a hydraulic automation production line, multiple hydraulic cylinders can be controlled by sequence valves to complete the loading, clamping, processing, unloading and other actions of workpieces in a certain order.

In pneumatic systems
Pressure limiting protection
Relief valve: It also plays a role in limiting the maximum pressure of the system in pneumatic systems. When the air source pressure or system pressure exceeds the set pressure of the relief valve, the relief valve opens and discharges excess compressed air into the atmosphere to prevent the system pressure from being too high and damaging the pneumatic components or causing safety accidents. For example, in pneumatic stamping equipment, the relief valve can protect the stamping cylinder and the entire pneumatic system from the impact of excessive pressure.

Pressure regulation
Pressure reducing valve: It is used to adjust the higher pressure of the air source to a stable pressure value suitable for the operation of pneumatic components. Different pneumatic components may require different working pressures. The pressure reducing valve can adjust the air source pressure to a suitable value as needed and keep the pressure stable. For example, in pneumatic control systems, pressure reducing valves can provide stable working pressure for various pneumatic control valves, cylinders, etc., ensuring that they can work accurately and reliably.

Back pressure control
Back pressure valve: a special type of pressure valve, mainly used to generate a certain back pressure in the pneumatic circuit to improve the motion performance of actuators such as cylinders. For example, in some occasions where the speed and position of the cylinder movement need to be accurately controlled, the pressure of the cylinder return oil chamber can be increased by setting a back pressure valve, making the cylinder movement more stable and preventing creeping, shaking and other phenomena.

In the fuel system
Pressure regulation
Fuel pressure regulator: a pressure valve in the fuel system, its function is to adjust the pressure of the fuel system according to the working conditions of the engine, so that the difference between the fuel pressure and the intake manifold pressure remains constant. This ensures that the amount of fuel injected by the injector is only related to the injection time, which facilitates the engine control unit to accurately control the amount of fuel injected. For example, in the automotive fuel injection system, the fuel pressure regulator ensures that the injector can inject fuel at a suitable pressure under different engine speeds, loads and other working conditions to ensure the normal operation of the engine.

Safety protection
Safety valve: When the fuel system pressure rises abnormally due to some reason (such as fuel pump failure, pipeline blockage, etc.), the safety valve will automatically open and release the fuel back to the fuel tank or low-pressure pipeline to prevent the fuel system from rupture, leakage and other dangerous situations due to excessive pressure, thus ensuring the safety of the fuel system.