throttle valve from Delta precision,Precision micro hydraulic components

Introduction to Miniature Flow Control

Aviation hydraulic micro-flow valve is a kind of Precision miniature fluid control valves used to precisely control hydraulic oil flow in aircraft hydraulic system. It is vital in the aviation sector to ensure the efficient and reliable operation of hydraulic systems and is widely used in critical systems such as flight control, landing gear and brakes.

Directional flow control valves operate in the free flow direction. The Flow metering valves uses the pressure difference between the two ends of the throttle hole to completely push the moving parts away from the sealing seat. If more protection is needed for both flow directions to prevent contamination, a filter screen can be added to the flow control small valve.

Directional flow control valves are an ideal solution for timing control. They are suitable for situations where the outlet flow rates of both directions need to be controlled. As shown in the figure below, when the actuator cylinder moves in either direction, both flow control valves can provide a high back pressure to prevent cavitation.

Application field

1. Flight control system: used to control the hydraulic drive of rudder surface, flaps, ailerons and other components.

2. Landing gear system: control landing gear retraction and locking.

3. Brake system: Adjust the brake hydraulic pressure to achieve smooth braking.

4. Hydraulic actuator cylinder: Control the expansion speed and strength of hydraulic actuator cylinder.

5. Auxiliary systems: such as door control, cargo handling, etc.

Working principle

The aircraft hydraulic micro-flow valve controls the flow of hydraulic oil by adjusting the position of the spool or changing the cross-sectional area of the flow channel. Common control methods include:

- Mechanical control: by mechanical linkage or manual adjustment.

- Electric control: Drive the solenoid valve or servo valve by electrical signal.

- Hydraulic control: The spool is driven by hydraulic signal.

The core is to adjust the speed and force of the hydraulic actuator (such as the hydraulic cylinder or hydraulic motor) by precisely controlling the flow rate.

Common type

1. Needle flow valve: Control the flow by adjusting the position of the valve needle, suitable for small flow accurate control.

2. Proportional flow valve: proportional control of flow through electrical signals, suitable for automation systems.

3. Servo flow valve: through closed-loop control to achieve high-precision flow regulation, suitable for flight control system.

4. Electromagnetic flow valve: through the electromagnetic force to control the spool position, suitable for fast response occasions.

Sum up

Aircraft hydraulic micro-flow valve is a key component of aircraft hydraulic system. Its high precision, high reliability and miniaturized design make it play an important role in flight control, landing gear, brake and other systems. The selection should consider factors such as flow, pressure, medium, temperature, control mode and weight to meet the high standards of aviation.

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We can manufacture substitutes for Lee valves. Several dozen types of miniature hydraulic components have been developed, and there is a corresponding model list, contact us for requesting the list. Those who need them can directly place orders for the corresponding models.

Other types of miniature components can also be jointly developed. Several key factors need to be considered: 1. The clearly defined demand model, with a continuous demand quantity and an annual demand of more than 100 pieces. 2. Your company has several samples, even old ones, or individual sections are fine. 3. For the first purchase, we are willing to pay the sample fee (ranging from several thousand dollars). We will provide 5 to 10 samples. 4. Your company has the ability to conduct performance tests and verification of your products, and provide performance test reports to Delta Precision for feedback. 5. There are technicians willing to assist Delta Precision in the joint development.

If you need Miniature Flow control, please contact us and we will customize a precise processing plan for you.