Taifeng Plate One-way Throttle Valve | Valve to control fluid flow

It is a valve that controls fluid flow by changing the throttling section or length. The throttle valve and the one-way valve can be combined into a one-way throttle valve by connecting them in parallel. The throttle valve and the one-way throttle valve are simple flow control valves. In the hydraulic system of the fixed displacement pump, the throttle valve and the relief valve cooperate to form three types of throttling and speed regulation systems, namely, the oil inlet throttle and speed regulation. system, return oil line throttling and speed regulating system and bypass throttling and speed regulating system. The throttle valve does not have a flow negative feedback function and cannot compensate for speed instability caused by load changes. It is generally only used in situations where load changes are not large or speed stability requirements are not high.
< >Performance Requirements Edit
The performance requirements for the throttle valve are a large flow adjustment range, smooth flow-pressure difference changes
Small internal leakage, if there is an external leakage port, external leakage will The amount should also be small
The adjustment torque should be small and the action should be sensitive.
The shape and structure of the throttle valve () is no different from that of the stop valve, except that the shapes of their opening and closing parts are different. Most of the opening and closing parts of the throttle valve are conical and streamlined, and the flow and pressure can be adjusted by changing the cross-sectional area of the channel. The throttle valve is used to reduce the medium pressure when the pressure drop is extremely large.
The flow rate of the medium between the throttle disc and the valve seat is very high, so that the surfaces of these parts are quickly damaged, which is the so-called cavitation phenomenon. In order to minimize the impact of cavitation, the valve disc is made of cavitation-resistant material (made of alloy steel) and made into a streamlined cone with a tip angle of ~. This also allows the valve disc to have a larger opening height. It is generally not recommended in small applications. Throttling under the gap.
< >Features Edit
The structure is relatively simple, easy to manufacture and repair, and low cost. , The adjustment accuracy is not high and cannot be used for adjustment.
The sealing surface is easily eroded and cannot be used to cut off media.
Poor sealing.
< >Application Editor
Since the flow rate of the throttle valve not only depends on the size of the throttle port, but also on the pressure difference before and after the throttle port, the stiffness of the valve is small, so it is only suitable for actuators Situations where load changes are small and speed stability requirements are not high.
For throttle speed regulation systems with large load changes on the actuator and high speed stability requirements, the throttle valve must be pressure compensated to maintain the pressure difference between the front and rear of the throttle valve unchanged, so as to achieve stable flow.