压力控制阀 按用途分为溢流阀﹑减压阀和顺序阀。(1)溢流阀:能控制液压系统在达到调定压力时保持恒定状态。用於过载保护的溢流阀称为安全阀。当系统发生故障,压力升高到可能造成破坏的限定值时,阀口会打开而溢流,以保证系统的安全。(2)减压阀:能控制分支回路得到比主回路油压低的稳定压力。减压阀按它所控制的压力功能不同,又可分为定值减压阀(输出压力为恒定值)﹑定差减压阀(输入与输出压力差为定值)和定比减压阀(输入与输出压力间保持一定的比例)。(3)顺序阀:能使一个执行元件(如液压缸﹑液压马达等)动作以后,再按顺序使其他执行元件动作。油泵产生的压力先推动液压缸1运动,同时通过顺序阀的进油口作用在面积A 上,当液压缸1运动完全成后,压力升高,作用在面积A 的向上推力大於弹簧的调定值后,阀芯上升使进油口与出油口相通,使液压缸2运动。 R900968642 PVV2-1X/055RA15UVB R900968079 PVV21-1X/045-040RA15UDMB R900968078 PVV1-1X/040LA15UMB R900968076 PVV2-1X/060LA15UMB R900966979 PVV41-1X/069-018RA15DDMC R900965263 PVV42-1X/122-040RA15UUMC R900962361 PVV54-1X/193-122RA15UUMC R900961088 PVV54-1X/193-122RB15DDMC R900957021 PVV21-1X/055-046RA15UUMB R900954326 PVV5-1X/139RA15UMC R900952889 PVV21-1X/055-027RA15UUMB R900950523 PVV21-1X/060-036RA15DDMB R900949682 PVV5-1X/183LA15DMC R900949681 PVV5-1X/193LA15DMC R900949676 PVV51-1X/183-046RA15DDMC R900949510 PVV54-1X/139-082RB15DDMC R900949069 PVV2-1X/060RA15RMB R900948951 PVV21-1X/068-040RA15DDMB R900948873 PVV51-1X/139-046LB15UUMC R900948168 PVV21-1X/045-027RA15DDMB R900947492 PVV2-1X/045RA15UVB R900947385 PVV5-1X/139RA15RVC R900946959 PVV2-1X/040RJ15UMB R900946296 PVV5-1X/139RA15DVC R900945850 PVV4-1X/082RJ15DMC R900945761 PVV4-1X/122RA15LMC R900945544 PVV5-1X/193LB15DMC R900945381 PVV21-1X/040-036RB15DUMB R900945229 PVV54-1X/193-098RB15DDMC R900945128 PVV1-1X/018RJ15UMB R900945121 PVV54-1X/183-098RB15DUMC R900944546 PVV5-1X/193LA15UMC R900944135 PVV41-1X/122-018RA15DDMC R900943716 PVV5-1X/154RA15UMC R900943199 PVV2-1X/055RB15DMB R900943054 PVV4-1X/113RA15UVC R900942737 PVV4-1X/082LA15DMC R900942489 PVV5-1X/193RB15UMC R900942298 PVV2-1X/045RJ15UMB R900942277 PVV52-1X/193-060RA15UUMC R900942115 PVV2-1X/040RA15DMB R900942114 PVV1-1X/018RA15DMB R900942110 PVV5-1X/183RA15UMC R900942109 PVV52-1X/139-068RA15UUMC R900942108 PVV4-1X/098RJ15UMC R900941961 PVV54-1X/139-082RA15UUMC R900941702 PVV1-1X/046RJ15UMB R900941701 PVV51-1X/183-040RA15UUMC R900941700 PVV51-1X/193-046RA15UUMC R900941699 PVV4-1X/098RA15RMC R900941698 PVV2-1X/055RA15RMB R900941697 PVV42-1X/113-068RB15URMC R900941692 PVV4-1X/122RJ15DMC R900941691 PVV2-1X/068RJ15DMB R900941684 PVV1-1X/040RJ15DMB R900941572 PVV2-1X/060RA15UMB R900940633 PVV1-1X/018RA15UMB R900940588 PVV21-1X/040-027RA15DDMB R900940587 PVV21-1X/040-018RA15DDMB R900940446 PVV2-1X/055RJ15UMB R900940260 PVV1-1X/027RJ15UMB R900940215 PVV2-1X/060RB15DMB R900939702 PVV52-1X/193-055RA15UUMC R900939526 PVV1-1X/036RJ15UMB R900939497 PVV54-1X/139-098RB15UUMC R900939347 PVV2-1X/055LA15DMB R900939078 PVV5-1X/193RJ15DMC R900939075 PVV1-1X/027RJ15DMB R900939042 PVV5-1X/193RA15RMC R900939041 PVV5-1X/183RA15RMC R900939040 PVV2-1X/068RA15RMB R900938819 PVV4-1X/113RA15UMC R900937555 PVV41-1X/082-040RA15DDMC R900937335 PVV52-1X/193-068RA15UUMC R900937333 PVV42-1X/082-045RA15UUMC R900937332 PVV21-1X/040-018RA15UUMB R900937330 PVV4-1X/082RA15LMC R900936954 PVV1-1X/027RA15UMB R900936923 PVV5-1X/162RA15UMC R900936760 PVV1-1X/036RA15UMB R900936492 PVV5-1X/162RA15DMC R900936491 PVV4-1X/113RA15DMC R900936297 PVV5-1X/183RA15DMC R900936296 PVV5-1X/154RA15DMC R900936294 PVV4-1X/098RA15DMC R900936293 PVV4-1X/069RA15DMC R900936292 PVV2-1X/045RA15DMB R900936290 PVV2-1X/055RA15DMB R900936197 PVV2-1X/060RA15DMB R900936150 PVV54-1X/183-122RA15UUMC R900935891 PVV1-1X/036RA15DMB R900935879 PVV41-1X/122-027RA15UUMC R900935466 PVV2-1X/068RA15DMB R900935445 PVV4-1X/069RA15UMC R900934793 PVV5-1X/162RB15UMC R900934061 PVV42-1X/098-045RA15DDMC R900934058 PVV21-1X/060-040RA15DDMB R900933057 PVV4-1X/082RA15RMC R900932732 PVV5-1X/139RA15DMC R900931901 PVV21-1X/055-018RA15UUMB