工作中的液压油，通过泵体流向回路，经管路，通过阀体流出到液压元件的油缸中完成液压油、液压油（液流）等的传递并储存下来与液压油混合后，经阀门与阀体的密封圈连接而形成回路部分，由阀体对被连接油缸进行工作，并对其进行控制。

3.油缸内压力及行程压力决定了油液流动循环速度和流动方向因此必须保证油液在压力较高或较大时流速较快并能在较小压力范围内流动但必须保证在适当的压力范围内循环1.油液要流动;2.对流动有一定要求一般有以下几种情况：温度过高（或过低）或有杂物；流动速度过快（如速度过快或速度过慢）或者速度过慢；产生振动或冲击；超过运动极限。

(3.如果泵体或活塞杆密封圈损坏或是密封圈被杂物堵住了都会造成运动阻力加大并使油温升高或使油液氧化变质产生氧化变质产生水或其它不良产物等导致润滑不良，破坏或失效；也有可能引起油液变稀、粘度降低（又称乳化现象）或油膜破裂导致漏油、堵死而造成堵塞，造成漏油而发生漏油造成浪费等事故）或故障等。

5.当阀体开合时产生漏油现象；而引起油温过高（如油温过高）这时可使油液柱速度过快这样就会使油路系统产生阻塞现象；还可能使油进入气孔内引起着火1.油箱不能满足要求时也可以将油位降低一下使油箱内的油液充分混合，这样就可以避免因过热而损坏密封件。

从而达到使其安全、可靠和节省能源的目的5.将油液注入泵体或阀中，当油液压力超过系统要求时可开启以达到要求压力，油缸将停止动作，实现动作当油温降至工作温度后，从油缸孔溢出；又因泵出口的压力下降到设定值（或液位）后，油温升高使整个液压系统动作，因此对油液进行处理就可保证工作正常而无需对其进行保养维护或改变其位置。

90R075-KN-5-NN-80-L-3-C7-D-03-GBA-42-42-24 90R075KN5NN80L3C7D03GBA424224 90-R-075-KN-5-NN-80-L-3-C7-D-03-GBA-42-42-24 90R075KN5NN80L3C7D03GBA424224 90R075-KN-5-NN-80-R-4-S1-E-03-GBA-26-26-20 90R075KN5NN80R4S1E03GBA262620 90-R-075-KN-5-NN-80-R-4-S1-E-03-GBA-26-26-20 90R075KN5NN80R4S1E03GBA262620 90R075-KN-5-NN-80-S-3-C7-D-03-GBA-20-20-20 90R075KN5NN80S3C7D03GBA202020 90-R-075-KN-5-NN-80-S-3-C7-D-03-GBA-20-20-20 90R075KN5NN80S3C7D03GBA202020 90R075-KN-5-NN-80-S-3-C7-D-03-GBA-29-29-24 90R075KN5NN80S3C7D03GBA292924 90-R-075-KN-5-NN-80-S-3-C7-D-03-GBA-29-29-24 90R075KN5NN80S3C7D03GBA292924 90R075-KN-5-NN-80-S-3-S1-D-03-GBA-23-23-24 90R075KN5NN80S3S1D03GBA232324 90-R-075-KN-5-NN-80-S-3-S1-D-03-GBA-23-23-24 90R075KN5NN80S3S1D03GBA232324 90R075-KN-5-NN-80-S-3-S1-E-03-GBA-20-20-24 90R075KN5NN80S3S1E03GBA202024 90-R-075-KN-5-NN-80-S-3-S1-E-03-GBA-20-20-24 90R075KN5NN80S3S1E03GBA202024 90-R-075-KP-1-BC-80-P-3-C7-E-03-GBA-35-35-24 90R075KP1BC80P3C7E03GBA353524 90-R-075-KP-1-BC-80-P-3-S1-D-00-GBA-32-32-24 90R075KP1BC80P3S1D00GBA323224 90-R-075-KP-1-BC-80-P-3-S1-D-03-GBA-23-26-24 90R075KP1BC80P3S1D03GBA232624 90-R-075-KP-1-BC-80-P-3-S1-D-03-GBA-35-35-24 90R075KP1BC80P3S1D03GBA353524 90-R-075-KP-1-BC-80-P-3-S1-D-03-GBA-38-38-24 90R075KP1BC80P3S1D03GBA383824 90-R-075-KP-1-BC-80-P-3-S1-D-04-GBA-32-32-20 90R075KP1BC80P3S1D04GBA323220 90-R-075-KP-1-BC-80-P-3-S1-E-00-GBA-40-40-24 90R075KP1BC80P3S1E00GBA404024 90-R-075-KP-1-BC-80-P-3-S1-E-03-GBA-40-40-24 90R075KP1BC80P3S1E03GBA404024 90-R-075-KP-1-BC-80-P-4-C7-E-03-GBA-23-23-20 90R075KP1BC80P4C7E03GBA232320 90-R-075-KP-1-BC-80-P-4-S1-D-03-GBA-26-26-20 90R075KP1BC80P4S1D03GBA262620 90-R-075-KP-1-BC-80-P-4-S1-D-03-GBA-26-26-24 90R075KP1BC80P4S1D03GBA262624 90-R-075-KP-1-BC-80-P-4-S1-E-03-GBA-35-35-24 90R075KP1BC80P4S1E03GBA353524 90-R-075-KP-1-BC-80-R-3-S1-C-03-GBA-26-26-24 90R075KP1BC80R3S1C03GBA262624 90-R-075-KP-1-BC-80-R-3-S1-D-03-GBA-35-35-24 90R075KP1BC80R3S1D03GBA353524 90-R-075-KP-1-BC-80-R-3-S1-D-03-GBA-38-38-24 90R075KP1BC80R3S1D03GBA383824 90-R-075-KP-1-BC-80-R-3-S1-E-03-EBC-35-35-24 90R075KP1BC80R3S1E03EBC353524 90-R-075-KP-1-BC-80-R-3-S1-E-03-GBA-17-17-24 90R075KP1BC80R3S1E03GBA171724 90-R-075-KP-1-BC-80-R-3-S1-E-03-GBA-26-26-24 90R075KP1BC80R3S1E03GBA262624 90-R-075-KP-1-BC-80-R-3-S1-E-03-GBA-29-29-24 90R075KP1BC80R3S1E03GBA292924 90-R-075-KP-1-BC-80-R-3-S1-E-03-GBA-35-35-24 90R075KP1BC80R3S1E03GBA353524 90-R-075-KP-1-BC-80-R-4-S1-E-03-GBA-17-17-24 90R075KP1BC80R4S1E03GBA171724 90-R-075-KP-1-BC-80-S-3-S1-D-03-GBA-32-32-24 90R075KP1BC80S3S1D03GBA323224 90-R-075-KP-1-BC-80-S-3-S1-D-03-GBA-42-42-24 90R075KP1BC80S3S1D03GBA424224 90-R-075-KP-1-BC-80-S-3-S1-D-04-GBA-35-35-24 90R075KP1BC80S3S1D04GBA353524 。