Flow regulators are called flow control valves or flow regulators (also called flow-through valve or throttle valve). These valves are used to regulate the flow rate of the medium used. Flow control valves are used in hydraulics and pneumatics to regulate the flow of hydraulic fluid or compressed air.
Flow control valves are divided into:
With a throttle valve, the greater the pressure difference, the greater the volumetric flow rate, since the volumetric flow rate depends on the differential pressure at the throttle point.
In contrast, a flow regulator (volume control valve) operates using pressure compensation. This ensures that the set volumetric flow rate remains unchanged even if the pressure level across the valve changes.
Festo offers a wide range of flow control valves for industrial and process automation. Discover our portfolio of flow control valves: throttle valves, one-way flow control valves and time delay valves.
Throttle valves are part of the category of flow control valves. They restrict the flow of the compressed air in the flow direction. A throttle valve is used to regulate volumetric flow rates. The restrictor creates a narrowing of the line's cross-section – it is a localised flow resistance.
With one-way flow control valves, the flow in one direction is restricted, and is free in the other. One-way flow control valves are used to adjust the speed of pneumatic cylinders, while flow control valves, on the other hand, are used to adjust the flow of air or a fluid.
节流阀用于调节气缸的速度或电机的转速。这两个变量都取决于体积流量，必须对其进行调整。
节流阀在压力补偿的基础上工作。这意味着即使阀的压力水平发生变化，设定的体积流量也保持不变。
单向节流阀确保介质（气体或液体）仅沿一个方向流动而不能倒流。一旦液体或气体开始流动，单向节流阀就会自动打开。当流向改变时，阀关闭。