, Properties and Uses: 1, steel body can withstand up to 35Mpa. 2, all the pressure, leakage test, without any leakage. 3, the internal processing precision, speed linear flow regulator. The throttle valve is to control the flow of fluid through the to change throttle cross-section or throttling length. The throttle valve and check valve in parallel can be combined into a one-way throttle valve. Throttle valves and check the throttle valve is a simple flow control valve, quantitative pump hydraulic system, the throttle valve and pressure relief valve with three throttle system can be composed into the oil circuit throttle governor system, the return oil throttle system and bypass throttle speed control system. Throttle flow negative feedback can not compensate for the instability caused by load changes speed, generally used only for a little change in load or speed stability less demanding occasions.