Supply Throttle

By changing the throttle is throttled to control the length of the cross-section or throttling fluid flow valve. The parallel throttle valves and check valves can be combined into a one-way throttle. Throttle and throttle check valve is a simple flow control valve, the quantitative pump hydraulic system with a throttle valve and pressure relief valve, can compose three throttle control system, ie into the oil Throttle Speed system, speed control system and return oil throttle bypass throttle speed control system. Throttle is no flow of negative feedback, can not compensate for load variations caused by the speed of instability, generally used only for little change or load speed stability less demanding situations. To throttle performance requirements are: throttle throttle · flow adjustment range, pressure changes a smooth flow; · small amount of leakage, if any leakage leakage port, and also a small amount of leakage; ? Adjust torque is small, quick action. Throttle (Choke valve) and shut-off valve shape structure is no different, but the shape of their opening and closing parts are different. Most of the throttle valve opening and closing parts of the cone streamlined, change the channel through which the cross-sectional area and to regulate the flow and pressure. Throttle valve for the pressure drop under conditions greatly reduce the media pressure purposes. Medium between the throttle valve and seat velocity great as to cause damage to these parts of the surface quickly - the so-called cavitation. To minimize the impact of cavitation, the valve cavitation-resistant material (steel manufacturing) and made into the top corner of 140 to 180 streamlined cone, which also enables the valve to have a larger opening height, is generally not recommended throttle in small gaps. Throttle Features 1, simple structure, easy to manufacture and maintenance, and low cost. Throttle throttle 2, regulation accuracy is not high, can not be adjusted using. 3, the sealing surface is easy to erosion, it can not be cut off media use. 4, poor sealing.