译文：
(1) 调压范围：它是指减压阀输出压力P2的可调范围，在此范围内要求达到规定的精度。调压范围主要与调压弹簧的刚度有关。 (2) 压力特性：它是指流量g为定值时，因输入压力波动而引起输出压力波动的特性。输出压力波动越小，减压阀的特性越好。输出压力必须低于输入压力—定值才基本上不随输入压力变化而变化。 (3) 流量特性：它是指输入压力—定时，输出压力随输出流量g的变化而变化的持性。当流量g发生变化时，输出压力的变化越小越好。一般输出压力越低，它随输出流量的变化波动就越小。

“ Valve of the basic performance ”是由提供的国际阀门新闻，译文仅供参考。另外，中国减压阀网还提供相关产品搜索：、、、、等。

原文：
(1) Voltage range: it refers to the valve output pressure P2 of the adjustable range, in this context requests reach the required accuracy. The major areas of surge voltage and the stiffness of the spring. (2) Pressure characteristics: it refers to the flow g as the fixed value, enter the pressure fluctuations due to pressure fluctuations caused by the output characteristics. Output pressure fluctuation smaller the better characteristics of valve. The output pressure must be less than the input pressure - it basically does not set the value varies with the input pressure. (3) Flow characteristics: it refers to the input pressure - from time to time, the output pressure with output flow g, and change the holding of. When the flow of g changes, the output pressure changes as small as possible. In general the lower the output pressure, which changes with fluctuations in the output flow rate smaller.