流量范围是衡量液压阀性能与可靠性的重要指标从本质上讲，液压阀实际上就是流量调节器它通常用于流量分配为了确保油路中的流动不会阻塞操作空间，或产生太大的压力从而影响安全生产或产生更多的空气并导致停机时间更长。
为了减少泄漏，必须通过阀门来控制油流方向和流量分布（一般分为单方向）及关闭速度或开度）来实现这一目标同时，还要注意阀门所需的流量（而不是时间）以及需要多少泵量才能满足液压系统的流量需求例如，压力为50MPa（泵泵）和流量为1L/min=50psi.2液压阀可用于低压运行：液压泵或液压阀由齿轮驱动，由两个阀体组成，阀是一个单向阀，可以传递压力（通过）和速度（流量）。
由执行机构控制阀组中的流量如果在执行机构中使用阀体以获得所需的压力或流量（阀芯的开口),则泵可以在没有外部控制信号的情况下关闭（该控制）或者压力开关打开（另一种情况是关闭）这就是液压阀具有大流量范围和开关能力的原因之一是因为它们具有大（小）流量分配功能而且不需要手动控制就可以在整个过程中进行控制阀门所需数量很小或不需要手动调节阀门可以在泵和压力之间自由切换并控制液路介质流量而不仅仅是关闭流量控制系统是一个系统中唯一完全独立于液压泵或马达来进行压力计算和控制的系统设备.流量范围由液压系统控制单元来决定与之相关！例如，压力补偿阀可以根据油温调节输出压力和流量大小而定制设计安装流量系统自动控制阀门从而达到流量需求控制状态的目的而且它可以在整个管路中调节！控制流量：对于液压阀来说具有足够高的流量能力、可控制、连续、不受故障时间的限制（与泵）这些特点使得它成为液压系统中最基本且不可替代也最为重要而价格低廉且方便携带、容易安装调试的控制元件。
随着电动阀在液压阀行业中得到广泛应用在矿山、冶金等 90L250-DD-5-NN-80-T-4-C8-J-GB-NNN-26-26-24 90L250DD5NN80T4C8JGBNNN262624 90L250-DD-5-NN-80-T-4-C8-K-G8-NNN-30-30-24 90L250DD5NN80T4C8KG8NNN303024 90-L-250-DD-5-NN-80-T-4-C8-K-G8-NNN-30-30-24 90L250DD5NN80T4C8KG8NNN303024 90L250-HF-1-BC-80-D-4-F1-L-03-NNN-38-38-28 90L250HF1BC80D4F1L03NNN383828 90-L-250-HF-1-BC-80-D-4-F1-L-03-NNN-38-38-28 90L250HF1BC80D4F1L03NNN383828 90-L-250-HF-1-DE-80-S-3-C8-K-03-NNN-35-35-24 90L250HF1DE80S3C8K03NNN353524 90-L-250-HF-1-NN-80-T-3-F1-K-03-NNN-32-32-24 90L250HF1NN80T3F1K03NNN323224 90-L-250-HF-1-NN-80-T-4-C8-J-03-NNN-17-26-20 90L250HF1NN80T4C8J03NNN172620 90L250-HF-1-NN-80-T-4-C8-J-03-NNN-17-26-20-F045 90L250HF1NN80T4C8J03NNN172620F045 90L250-HF-1-NN-80-T-4-C8-K-03-NNN-20-20-24 90L250HF1NN80T4C8K03NNN202024 90-L-250-HF-1-NN-80-T-4-C8-K-03-NNN-20-20-24 90L250HF1NN80T4C8K03NNN202024 90L250-HF-1-NN-80-T-4-F1-J-03-NNN-42-42-24 90L250HF1NN80T4F1J03NNN424224 90-L-250-HF-1-NN-80-T-4-F1-J-03-NNN-42-42-24 90L250HF1NN80T4F1J03NNN424224 90L250-HF-1-NN-80-T-4-F1-K-00-NNN-42-42-24 90L250HF1NN80T4F1K00NNN424224 90-L-250-HF-1-NN-80-T-4-F1-K-00-NNN-42-42-24 90L250HF1NN80T4F1K00NNN424224 90L250-HF-1-NN-80-T-4-F1-K-03-NNN-42-42-24 90L250HF1NN80T4F1K03NNN424224 90-L-250-HF-1-NN-80-T-4-F1-K-03-NNN-42-42-24 90L250HF1NN80T4F1K03NNN424224 90L250-HF-2-NN-80-S-3-C8-K-00-NNN-38-38-28 90L250HF2NN80S3C8K00NNN383828 90-L-250-HF-2-NN-80-S-3-C8-K-00-NNN-38-38-28 90L250HF2NN80S3C8K00NNN383828 90L250-HF-5-AB-80-S-4-C8-K-03-NNN-42-42-24 90L250HF5AB80S4C8K03NNN424224 90-L-250-HF-5-AB-80-S-4-C8-K-03-NNN-42-42-24 90L250HF5AB80S4C8K03NNN424224 90L250-HF-5-AB-80-S-4-F1-J-03-NNN-35-35-30 90L250HF5AB80S4F1J03NNN353530 90-L-250-HF-5-AB-80-S-4-F1-J-03-NNN-35-35-30 90L250HF5AB80S4F1J03NNN353530 90L250-HF-5-AB-80-S-4-F1-J-03-NNN-38-38-30 90L250HF5AB80S4F1J03NNN383830 90-L-250-HF-5-AB-80-S-4-F1-J-03-NNN-38-38-30 90L250HF5AB80S4F1J03NNN383830 90L250-HF-5-BC-80-D-4-F1-L-03-NNN-35-35-30 90L250HF5BC80D4F1L03NNN353530 90-L-250-HF-5-BC-80-D-4-F1-L-03-NNN-35-35-30 90L250HF5BC80D4F1L03NNN353530 90L250-HF-5-BC-80-S-4-C8-J-03-NNN-42-42-24 90L250HF5BC80S4C8J03NNN424224 90-L-250-HF-5-BC-80-S-4-C8-J-03-NNN-42-42-24 90L250HF5BC80S4C8J03NNN424224 90L250-HF-5-BC-80-T-4-C8-K-03-NNN-35-35-24 90L250HF5BC80T4C8K03NNN353524 90-L-250-HF-5-BC-80-T-4-C8-K-03-NNN-35-35-24 90L250HF5BC80T4C8K03NNN353524 90L250-HF-5-BC-80-T-4-F1-J-00-NNN-26-26-24 90L250HF5BC80T4F1J00NNN262624 90-L-250-HF-5-BC-80-T-4-F1-J-00-NNN-26-26-24 90L250HF5BC80T4F1J00NNN262624 90L250-HF-5-BC-80-T-4-F1-K-03-NNN-14-42-20 90L250HF5BC80T4F1K03NNN144220 90-L-250-HF-5-BC-80-T-4-F1-K-03-NNN-14-42-20 90L250HF5BC80T4F1K03NNN144220 90-L-250-HF-5-BC-80-T-4-F1-K-03-NNN-14-42-20-F056 90L250HF5BC80T4F1K03NNN144220F056 90L250-HF-5-BC-80-T-4-F1-K-04-NNN-42-42-24 90L250HF5BC80T4F1K04NNN424224 90-L-250-HF-5-BC-80-T-4-F1-K-04-NNN-42-42-24 90L250HF5BC80T4F1K04NNN424224 90L250-HF-5-CD-80-S-3-F1-J-03-NNN-23-23-24 90L250HF5CD80S3F1J03NNN232324 90-L-250-HF-5-CD-80-S-3-F1-J-03-NNN-23-23-24 90L250HF5CD80S3F1J03NNN232324 90L250-HF-5-CD-80-T-3-C8-K-03-NNN-35-35-24 90L250HF5CD80T3C8K03NNN353524 90-L-250-HF-5-CD-80-T-3-C8-K-03-NNN-35-35-24 90L250HF5CD80T3C8K03NNN353524 90L250-HF-5-EF-80-S-4-C8-J-03-NNN-23-23-24 90L250HF5EF80S4C8J03NNN232324 90-L-250-HF-5-EF-80-S-4-C8-J-03-NNN-23-23-24 90L250HF5EF80S4C8J03NNN232324 90L250-HF-5-EG-80-T-4-C8-K-03-NNN-38-38-28 90L250HF5EG80T4C8K03NNN383828 90-L-250-HF-5-EG-80-T-4-C8-K-03-NNN-38-38-28 90L250HF5EG80T4C8K03NNN383828 90L250-HF-5-NN-80-S-3-C8-K-03-NNN-35-35-24 90L250HF5NN80S3C8K03NNN353524 90-L-250-HF-5-NN-80-S-3-C8-K-03-NNN-35-35-24 90L250HF5NN80S3C8K03NNN353524 90L250-HF-5-NN-80-S-4-C8-K-03-NNN-35-35-24 90L250HF5NN80S4C8K03NNN353524 90-L-250-HF-5-NN-80-S-4-C8-K-03-NNN-35-35-24 90L250HF5NN80S4C8K03NNN353524 90L250-HF-5-NN-80-T-3-F1-J-03-NNN-42-42-24 90L250HF5NN80T3F1J03NNN424224 90-L-250-HF-5-NN-80-T-3-F1-J-03-NNN-42-42-24 90L250HF5NN80T3F1J03NNN424224 90L250-HF-5-NN-80-T-3-F1-K-03-NNN-35-35-20 90L250HF5NN80T3F1K03NNN353520 90-L-250-HF-5-NN-80-T-3-F1-K-03-NNN-35-35-20 90L250HF5NN80T3F1K03NNN353520 90L250-HF-5-NN-80-T-4-F1-K-03-NNN-14-42-20 90L250HF5NN80T4F1K03NNN144220 90-L-250-HF-5-NN-80-T-4-F1-K-03-NNN-14-42-20 90L250HF5NN80T4F1K03NNN144220 90L250-HF-5-NN-80-T-4-F1-K-03-NNN-21-21-24 90L250HF5NN80T4F1K03NNN212124 90-L-250-HF-5-NN-80-T-4-F1-K-03-NNN-21-21-24 90L250HF5NN80T4F1K03NNN212124 90L250-HF-5-NN-80-T-4-F1-K-03-NNN-35-35-24 90L250HF5NN80T4F1K03NNN353524 90-L-250-HF-5-NN-80-T-4-F1-K-03-NNN-35-35-24 90L250HF5NN80T4F1K03NNN353524 90L250-HF-5-NN-80-T-4-F1-K-03-NNN-35-35-28 90L250HF5NN80T4F1K03NNN353528 90-L-250-HF-5-NN-80-T-4-F1-K-03-NNN-35-35-28 90L250HF5NN80T4F1K03NNN353528 90L250-HF-5-NN-80-T-4-F1-K-03-NNN-42-42-24 90L250HF5NN80T4F1K03NNN424224 90-L-250-HF-5-NN-80-T-4-F1-K-03-NNN-42-42-24 90L250HF5NN80T4F1K03NNN424224 。
