Hydraulic Valve

A hydraulic valve is like a traffic cop for liquid in hydraulic systems. It directs the flow of oil or hydraulic fluid to make machines and equipment work. Like a traffic light tells cars when to stop or go, hydraulic valves control when and where the fluid goes, changing its direction and pressure. These valves are important in things like construction machinery and car brakes. They help these machines operate safely and smoothly. Hydraulic valves have the largest variety and specifications. It is also the most active component in hydraulic technology. Hydraulic valves have a wide range of applications, such as engineering and packaging machines.

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Hydraulic Valve

Cast Iron Hydraulic Valves VA20 VA35 VG20 VG35

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Hydraulic Valve

VA20 Parker Directional Control Valves VA20 VA35 VG20 VG35 VG20-HV799 SDV40-HDV7

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Hydraulic Valve

Parker VG/VA Series Valve in Stock with High Pressure

Principle of the hydraulic valve

Hydraulic valves are control components in hydraulic systems. They are like a traffic policeman for the liquid in the hydraulic system. They control the flow direction, pressure, and flow rate of the liquid in the hydraulic system. How they work is simple:

When you adjust a hydraulic valve, you tell it where to direct the fluid path. Hydraulic valves enable hydraulic actuators and the working mechanisms they drive to operate. These mechanisms then get the required movement direction, speed, and torque. It's like turning a knob to determine the direction water flows in a hose. This makes them vital for a variety of mechanical equipment. In short, hydraulic valves are liquid-powered traffic controllers. They ensure the smooth and safe operation of hydraulic systems.

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Categories of hydraulic valves

There are many different types of hydraulic valves on the market according to their function and purpose. Here are some common classifications of hydraulic valves:

Function

Dosing valves:

Control liquid flow, such as throttle valves and proportional valves.
Constant pressure valve:

Maintains constant pressure in the system, such as safety valves and pressure reducing valves.
Directional control valve:

Controls the flow of liquid, such as one-way valve, two-way valve and multi-way valve.
Combined function valve:

A valve with multiple functions, such as relief valve, reversing valve, etc.

Control

Manual valve:

Requires manual operation to control the operation of the hydraulic system.
Mechanical valve:

Uses a mechanical device, such as a spring or spool valve, to achieve control.
Electric Valve:

Uses an electric actuator, such as a solenoid or electric motor, to control the operation of a valve.
Hydraulic valve:

Controls flow, pressure and direction through the principles of fluid mechanics.

Type

Directional valve:

A valve that changes the direction of liquid flow, such as a four-position three-way reversing valve and a four-position four-way reversing valve.
Throttle valve:

A valve that controls flow, such as a throttle valve and a speed regulating valve.
Safety valve:

Protects the system from excessive pressure, such as a safety relief valve.

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The role of hydraulic valves in hydraulic systems

Hydraulic valves play a very important role in hydraulic systems. Any hydraulic system, no matter how simple, cannot lack hydraulic valves. The same hydraulic equipment also have different combinations and uses of hydraulic valves. This can form various hydraulic systems with completely different oil circuit structures.

The hydraulic valves affect the rationality of a hydraulic system design. It also affects the convenience of installation and maintenance of the hydraulic system. It also determines whether the hydraulic system can work properly and reliably.

Flow control

Hydraulic valves regulate the flow of fluid. And they control the speed of an actuator such as a hydraulic cylinder. This is important for achieving precise movements and controlling mechanical components.

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Pressure control

Hydraulic valves can maintain the pressure in the system within a safe range. They prevent system overpressure, protect equipment from damage. They also keep workloads within safe limits.

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Flow direction control

Hydraulic valves can change the flow direction of liquid. They allow the actuators in the hydraulic system to move in different directions when needed. This helps control the movement, position and operation of machinery.

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Emergency Stop

Some hydraulic systems have emergency stop valves. They can immediately cut off the flow of fluid. Hydraulic valves can respond to emergencies and emergency shutdown needs.

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