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1、節流閥裝在回油路上，回油路上有較大的背壓，因此在外界負載變化時酸沖作用，升降機運動的平穩性比進油節流調速回路要好。
Speaking throttle lift factory installed oil back on the road, on the way back to the oil has a larger back pressure, so when the external load changes acid thrusting, smooth movement than lift oil into better control Circuits.

2、回油節流調速回路中，經升降機節流閥后壓力損耗而發熱，導致溫度升高的油融流回油箱，容易散熱。
Lift manufacturers introduce meter-speed circuit, after the lift throttle pressure loss and fever, leading to melting temperature of the oil back into the tank, easy to heat.

3、回油節流調速回路廣泛應用于功率不大、負載變化較大或運動平穩性融高的液壓系統中。
Lift manufacturers remind meter-speed circuits are widely used in power little bigger load changes or movement of the hydraulic system of high melt stability.