REXROTH气动阀0821302409 博世力士乐优质商品 正品特价低价销售 原装进口 是上海韦米机电设备有限公司主营产品之一，全国销售热线：021-61116812 传真：021-51334670 手机：13296124812 联系人：何洋，在线QQ报价：1875691081
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REXROTH气动阀0821302409 博世力士乐优质商品
电磁阀（Electromagnetic valve）是用电磁控制的工业设备，是用来控制流体的自动化基础元件，属于执行器，并不限于液压、气动。用在工业控制系统中调整介质的方向、流量、速度和其他的参数。电磁阀可以配合不同的电路来实现预期的控制，而控制的精度和灵活性都能够保证。电磁阀有很多种，不同的电磁阀在控制系统的不同位置发挥作用，最常用的是单向阀、安全阀、方向控制阀、速度调节阀等。
电磁阀里有密闭的腔，在不同位置开有通孔，每个孔连接不同的油管，腔中间是活塞，两面是两块电磁铁，哪面的磁铁线圈通电阀体就会被吸引到哪边，通过控制阀体的移动来开启或关闭不同的排油孔，而进油孔是常开的，液压油就会进入不同的排油管，然后通过油的压力来推动油缸的活塞，活塞又带动活塞杆，活塞杆带动机械装置。这样通过控制电磁铁的电流通断就控制了机械运动。
气动阀：是一种直角回转结构，它与阀门定位器配套使用，可实现比例调节； 气动阀最适用于各种调节场合，具有额定流量系数大，可调比大，密封效果好，调节性能灵敏，体积小，可竖卧安装。适用于控制气体、蒸汽、液体等介质。
该阀中的固定节流孔尺寸按设备的发动机最佳速度所需流量确定。若发动机速度超出此最佳范围，则节流小孔压降将增加，从而将卸载阀移位至小流量位置。因此大流量泵相邻的元件做成可对最大流量节流的尺寸，故此回路能耗少、工作平稳且成本低
气动阀是一种气控液压阀，它用于泵进油节流，当设备的液压空载时，仅使极小流量（〈 18.9t/min）通过泵；而在有负载时，全流量吸入泵。如图10所示，这种回路可省去泵与原动机间的离合器，从而降低了成本，还减小了空载功耗，因通过回路的极小流量保持了设备的原动机功率。另外，还降低了泵在空载时的噪声。干式吸油阀回路可用于由内燃机驱动的任何车辆中开关式液压系统，例如垃圾装填卡车及工业设备。
0821783833 VTS HF03M1 BRBRBRBRDRARXX
0821783834 VTS HF03M1 GRBRBRBRBRBRXXGRBRBRBRBRBRXX
0821783835 VTS HF03M1 DRDRDRDRARARARARGRGRGRGRGRGR+
0821783836 VTS HF03M1 GRBRXXDR
0821783837 VTS HF03M1 GRXXXDRBRDRBRGRBRBRARBR
0821783838 VTS HF03M1 ARARBRBRARBRBRBRBRBRBRBRXX
0821783839 VTS HF03M1 GRYARARARARARARARAR
0821783840 VTS HF03M1 IRXXXXXXX
0821783841 VTS HF03M1 BRBRBRBRBRBRBRBRBRBRBRBRBRBR+
0821783842 VTS HF03M1 DRDRDRDRHRHRIRIR
0821783843 VTS HF03M1 ANANANANANANANBNBNANAN
0821783844 VTS HF03M1 GRXXXDRDRBRBRBRBRXX
0821783845 VTS HF03M1 GRXXXDRBRBRX
0821783846 VTS HF03M1 GNGNCNCNCNXX
0821783847 VTS HF03M1 GRARARARARARARXGRARARARARARA+
0821783848 VTS HF03M1 ARARARXARARXX
0821783849 VTS HF03M1 BRBRDRDRBRDRBRBRXX
0821783850 VTS HF03M1 BNBNANANGNGN
0821783851 VTS HF03M1 ARDRGRARX
0821783852 VTS HF03M1 GRGRGRGRXGR
0821783853 VTS HF03M1 GRXXXBRDRBRDRXX
0821783854 VTS HF03M1 GRGRXXBRDRBRXXX
0821783855 VTS HF03M1 GRGRXXBRDRBRDRBRDRXX
0821783857 VTS HF03M1 ARDRARARARARARARARARARGRYARY+
0821783858 VTS HF03M1 CRCRCRCR
0821783859 VTS HF03M1 GRCRCRCRCRCRCRCRCRCRCRCRCRCR+
0821783860 VTS HF03M1 CRYCRCRCRXCRCRCRXXXBRBR
0821783861 VTS HF03M1 GRBRBRBRDRDR
0821783862 VTS HF03M1 GRXXXDRDRBRARARBRBRBRBRX
0821783863 VTS HF03M1 DRDRDRDRGRDRXXGRARDRDRDRDRAR
0821783864 VTS HF03M1 ZZZZZZZZZZZZZZZ
0821783865 VTS HF03M1 ARARGRARARARAR
0821783866 VTS HF03M1 ANANANANANANYANYANANAN
0821783867 VTS HF03M1 GNANGNGNGNGNANGNGNGNGN
0821783868 VTS HF03M1 GNGNANGNGN
0821783869 VTS HF03M1 ANANANANDN
0821783871 VTS HF03M1 BRBRGRBRBRGRBRGRBRGRBRGRBRBR+
0821783872 VTS HF03M1 ARARARARARDRARGRX
0821783873 VTS HF03M1 GRGRGRBRGRBRGRX
0821783874 VTS HF03M1 GRGRGRBRBRARARARARXXX
0821783875 VTS HF03M1 ARARARARARDRARDRARDRARDRARDR+
0821783876 VTS HF03M1 ARDRGRARARARX
0821783877 VTS HF03M1 DRDRDRGRXX
0821783878 VTS HF03M1 XARARYARARAR
0821783879 VTS HF03M1 DRARARARARARARARXXXX
0821783880 VTS HF03M1 BNBNANGNANXXXXXXX
0821783881 VTS HF03M1 GRARGRGR
0821783882 VTS HF03M1 IRIRIRIRARAR
0821783883 VTS HF03M1 GRGRGRXGRBRXXDRBRBRHRGRGRBRG
0821783884 VTS HF03M1 ARARARARARARARARARARARAR
0821783885 VTS HF03M1 ARARBRARARXX
0821783886 VTS HF03M1 ARARARARARARARARXXX
0821783887 VTS HF03M1 ARARARARARARARXXXXX
0821783888 VTS HF03M1 GRGRGRGRBRGRGRGR
0821783889 VTS HF03M1 GRGRGRGRBRGR
0821783890 VTS HF03M2 BNBNXBNBNXDNX
0821783891 VTS HF03M1 BRBRBRBRBRBRBRBRBRGRGRGR
0821783892 VTS HF03M1 BRBRBRBRGRBRBRBRBRBRBRBRBRBR
0821783893 VTS HF03M1 GNANGNGNGNANGNGNBNANGNGNGN
0821783894 VTS HF03M1 BRDRAR
0821783895 VTS HF03M1 GRGRXGRXX
0821783896 VTS HF03M1 DRGRGRGRGRX
0821783897 VTS HF03M1 GRDRBRBRGRGR
0821783898 VTS HF03M1 GRGRGRGRGRGRBRBRDRBRGR
0821783899 VTS HF03M1 GRARBRBRARBRARBRARBRARBRARAR+
0821783900 VTS HF03M1 ARBRBRBRBRBRBRBRBRBRBRARXX
0821783901 VTS HF03M1 ARARBRARARARARARBRBRBRARXX
0821783902 VTS HF03M1 ARARBRBRBRBRBRBRARARBRBRBRAR+
0821783903 VTS HF03M1 BRBRBRBRBRBRBRBRBRBRBRBRARAR+
0821783904 VTS HF03M1 BRBRBRBRBRBRARARARX
0821783905 VTS HF03M1 BRBRBRBRBRHRBRARXXGRGRGRGRXX
0821783906 VTS HF03M1 BRBRBRBRBRHRBRARXXXXXXXX
0821783907 VTS HF03M1 GRGRXXXX
0821783908 VTS HF03M1 GRGRXXDRBRBRBRBRBRBRBRBRBR
0821783909 VTS HF03M1 GRGRGRXBRBRDRDR
0821783910 VTS HF03M1 BRBRBRXXXXX
0821783911 VTS HF03M1 GRGRBRBRXXDRBRBRDRBRBRBRDRBR
0821783912 VTS HF03M1 GRGRXXDRBR
0821783913 VTS HF03M1 DRBRDRBRDRBRARGRDRBRARGR
0821783914 VTS HF03M1 DRBRBRBRBRBRHRAR
0821783915 VTS HF03M1 IRXXXBRBRBRBRBRBRXXXXXX
0821783916 VTS HF03M1 GRBRXXX
0821783917 VTS HF03M1 GRGRXXXBRBRBR
0821783918 VTS HF03M1 GRGRGRXDRDRDRBRBRDRXX
0821783919 VTS HF03M1 GRGRGRGRDRDRBRBRBRDRXX
0821783920 VTS HF03M1 IRGRGRGRGRX
0821783921 VTS HF03M1 DRGRDRARGRGRGRGRGRDRBRDRBR
0821783922 VTS HF03M1 GRGRGRARAR
0821783923 VTS HF03M1 ARARARARARARBRBRBRDRXX
0821783924 VTS HF03M1 DRDRDRDRBRDRXXXX
0821783925 VTS HF03M1 DRARARARXX
0821783926 VTS HF03M1 DRDRGRGRGRGRGRGRGRGRGRGRGRX
0821783927 VTS HF03M1 DRDRGRGRGRGRGRGRGRGRGRGRGRGR
0821783928 VTS HF03M1 DRDRGRGRGRGRGRGRGRGR
0821783929 VTS HF03M1 DRDRDRDRDRBRDRDRARXXXXX
0821783930 VTS HF03M1 BRBRX
0821783931 VTS HF03M1 BRDRDRARGRGRGRGRGRGRXX
0821783932 VTS HF03M1 GRXXXBRARXX
0821783933 VTS HF03M1 GRXXDR
0821783934 VTS HF03M1 DRXXBRGRGRGRGR
0821783935 VTS HF03M1 GRGRGRGRGRGRGRGRDRGR
0821783936 VTS HF03M1 ARGRGRX
0821783937 VTS HF03M1 GRGRXXDRDRBRBR
0821783938 VTS HF03M1 GRXXXDR
0821783939 VTS HF03M1 ARBRARBRBRARBRBRARARARARARAR
0821783940 VTS HF03M1 BRDRBRGRARXARARARARARARGRGRX+
0821783941 VTS HF03M1 ARARBRBRARARARAR
0821783942 VTS HF03M1 XANBNBNANBNANANXDNANX
0821783943 VTS HF03M1 GRGRGRBR
0821783944 VTS HF03M1 ARARARARARARARARARXXYARAR
0821783945 VTS HF03M1 GRDRGRBRBRBRDRGR
0821783946 VTS HF03M1 BRBRBRBRBRBRDRGRBRBR
0821783947 VTS HF03M1 ARARARARARXARARARXGRGRGRX
0821783948 VTS HF03M1 BRBRDRBRXBR
0821783949 VTS HF03M1 GRGRGRARGRARARARARXGRGRXX
0821783950 VTS HF03M1 GRGRBRDRBR
0821783951 VTS HF03M1 BRBRARBRBRBRXX
0821783952 VTS HF03M1 BRARBRBRX
0821783953 VTS HF03M1 BRBRARARBRBRXX
0821783954 VTS HF03M1 GRBRGRBRARBRBRXX
0821783955 VTS HF03M1 BRBRBRBRARBRBRXX
0821783956 VTS HF03M1 DRDRDRBRDRDRXX
0821783957 VTS HF03M1 BRARBRBRBRBRXX
0821783958 VTS HF03M1 GRBRBRBRBRARBRBRXX
0821783959 VTS HF03M1 ARARARBRBRBRDRARXARARARARX
0821783960 VTS HF03M1 ARARARDRBRARBRARXX
0821783961 VTS HF03M1 ARARARBRBRBRDRARARARARARARX
0821783962 VTS HF03M1 BRBRARBRBRBR
0821783963 VTS HF03M1 DRAR
0821783964 VTS HF03M1 GNANANANANANANANX
0821783965 VTS HF03M1 DNDNANANDNDNANANANX
0821783966 VTS HF03M1 ANANANANANANANANANANANX
0821783967 VTS HF03M1 ANANANANANANANANANANX
0821783968 VTS HF03M1 DRDRDRDRDRDRDRDRDRDRDRDRDRHR+
0821783969 VTS HF03M1 DRDRDRDRDRDRDRDRX
0821783970 VTS HF03M1 BRGRBRBRGRGR
0821783971 VTS HF03M1 ARARARARARARARARARARARARARAR+
0821783972 VTS HF03M1 IRIRIRIRIR
0821783973 VTS HF03M1 BRDRBRBRBRDRXXBRBRXX
0821783974 VTS HF03M1 GRXXXDRBRBRBRBRBRGRBRBRBRBRB
0821783975 VTS HF03M1 GRGRGRXDRDRDRARAR
0821783976 VTS HF03M1 DN
0821783977 VTS HF03M1 ARARARARGRGRAR
0821783978 VTS HF03M1 ARARGRARGRARARGRAR
0821783979 VTS HF03M1 GRGRGRGRGRGRGRXARARARARARARA+
0821783980 VTS HF03M1 GRGRGRGRGRGRGRARARARARARAR
0821783982 VTS HF03M1 DRDRDRDRDRGRGRGR
0821783983 VTS HF03M1 BRBRBRARBRBRBRBRBRBR
0821783984 VTS HF03M1 BRBRBRBRARARGR
0821783985 VTS HF03M1 BRBRBRARARGR
0821783986 VTS HF03M1 BRBRBRARARBRBRBRBRBRBRGR
0821783987 VTS HF03M1 GRGRGRGRGRGRGRGRARARARARARAR+
0821783988 VTS HF03M1 HRARARARARARARARARARARARARAR
0821783989 VTS HF03M1 HRARARARARARARARARARAR
0821783990 VTS HF03M1 GNBN
0821783991 VTS HF03M1 GRDNXXBRBRBRBR
0821783992 VTS HF03M1 ARARARARARARBRARBRARBRARBRGR+
0821783993 VTS HF03M1 BRBRBRBRBRBRBRBRARARARARARAR+
0821783994 VTS HF03M1 ANDNGN
0821783995 VTS HF03M1 GRGRGRGRDR
0821783996 VTS HF03M1 BNBNBNBNBNBNXBN
0821783997 VTS HF03M1 BNBNBNBNBNBNBNBNBNBNBNBNBNBN+
0821783998 VTS HF03M1 ANANGNGNGNGNANANGNGN
0821784000 VTS HF03M1 ARARARARARGRGRARARARARARARAR+
0821784001 VTS HF03M1 BNBNANBNBNANANANAN
0821784002 VTS HF03M1 CNCNCNCNBNBNBNBNGNGNGNGNDNDN+
0821784003 VTS HF03M1 ANGNGNANX
0821784004 VTS HF03M2 ARAR
0821784005 VTS HF03M1 BRARARARARBRBRBRXX
0821784006 VTS HF03M1 GRGRGRGRBRARBRBRBRAR
0821784007 VTS HF03M1 GRGRGRDRBRDRDRX
0821784008 VTS HF03M1 ARARARARBRARAR
0821784009 VTS HF03M1 ARARARDRGRARAR
0821784010 VTS HF03M1 BRBRBRBRBRBRBRBRBRBRBRBRXXXX
0821784011 VTS HF03M1 GRGRARGRARARARARARARGRGRGRX
0821784012 VTS HF03M1 ARARARARARARGRGRGRBRXBRXX
0821784013 VTS HF03M1 ARBRX
0821784014 VTS HF03M1 ARARARARARARXARARARARX
0821784015 VTS HF03M1 GRXXXDRGRDRDRGRBRBRBR
0821784016 VTS HF03M1 DRDRBRBRXDRBRBRGRX
0821784017 VTS HF03M1 GRXXXDRBRGRXYDR
0821784018 VTS HF03M1 ARARDRARXXXXXXXXDRARARDR
0821784019 VTS HF03M1 ARDRDRARARARDRDRARDRDRDRXXXX
0821784020 VTS HF03M1 ANDNANDNAN
0821784021 VTS HF03M1 ANBN
0821784022 VTS HF03M1 ARARARARGRGRGRGRXX
0821784023 VTS HF03M1 ARARARARARARGRGRGRGRGRXX
0821784024 VTS HF03M1 ARARARARARARARBR
0821784025 VTS HF03M1 DNBNXX
0821784026 VTS HF03M1 GNXXANANANANANANANANANANANXX
0821784027 VTS HF03M1 ANANXANANANANANANANANANANX
0821784028 VTS HF03M1 GNXYANANXANANANX
0821784029 VTS HF03M1 GNGNXYGNGNANANANANANANANANAN
0821784030 VTS HF03M1 GNGNGNGNGNGNGNGNANANANANANAN+
0821784031 VTS HF03M1 GNXANANANANANANXX
0821784032 VTS HF03M1 GNGNXYGNGNGNXANANANANANANANX
0821784033 VTS HF03M1 ANANANANXXANANANANANANANANXX
0821784034 VTS HF03M1 GNGNXYGNXANANANANANANXX
0821784035 VTS HF03M1 ANANANANANANXXXX
0821784036 VTS HF03M1 ANANANXXX
0821784037 VTS HF03M1 ARARDRDRGR
0821784038 VTS HF03M1 BRBRARARARARARARARARZZZZZZ
0821784039 VTS HF03M1 BRBRBRBRBRBRBRBRBRXX
0821784040 VTS HF03M1 GNGNGNGNXANANANANANANANANX
0821784041 VTS HF03M1 GNGNXANANANANXXX
0821784042 VTS HF03M1 GNXANANANX
0821784043 VTS HF03M1 ANANANANANANANANANANXXXX
0821784044 VTS HF03M1 GNXXANANANANXXX
0821784045 VTS HF03M1 ANHRANANANANXX
0821784046 VTS HF03M1 ARARARARARDRARARARARAR
0821784047 VTS HF03M1 GNXYANXANANANXX
0821784048 VTS HF03M1 GNGNXYANXANANANANANANANX
0821784049 VTS HF03M1 ARARARARARARARARARARARGR
0821784050 VTS HF03M1 BRCRCRCRCRCRCRCRCRCRX
0821784051 VTS HF03M1 GRGRGRXDRBRDRDRXX
0821784052 VTS HF03M1 GRGRXXDRBRDRDRDRBRDRX
0821784053 VTS HF03M1 GRGRGRXGRBRXXDRBRBRHRGRGRBRG
0821784054 VTS HF03M1 BRDR
0821784055 VTS HF03M1 GRARIRIRAR
0821784056 VTS HF03M1 GRARIRIRX
0821784057 VTS HF03M1 BRBRBRDRBRXBRBRBRBRBRBR
0821784058 VTS HF03M1 BRDRBRBRBRBRXBRBRBRBRDRBRBR
0821784059 VTS HF03M1 BRDRBRBRBRBRXDRBRBRBRBRBRBRB
0821784060 VTS HF03M1 DRBRBRBRBRBRDRDRBRXDRBRBRBR
0821784061 VTS HF03M1 ARARARARARARGRARYGR
0821784062 VTS HF03M1 BRARBRARARARARARARGR
0821784063 VTS HF03M1 GNGNANGNGNGN
0821784064 VTS HF03M1 BRBRARARARARBRBRARARARARAR
0821784065 VTS HF03M1 BRYBRBRARBRARGR
0821784066 VTS HF03M1 BRBRBRBRYBRYARBR
0821784067 VTS HF03M1 ARARBRBRYARYARAR
0821784068 VTS HF03M1 BRDRDRDRDRBRDRAR
0821784069 VTS HF03M1 DRDRDRDRDRAR
0821784070 VTS HF03M1 DRARGR
0821784071 VTS HF03M1 DRARGRBRDRBRBR
0821784072 VTS HF03M1 DRDRDRDRBR
0821784073 VTS HF03M1 ARARARARDRBR
0821784074 VTS HF03M1 DRBRDR
0821784075 VTS HF03M1 DRDRDRDRBRDRDR
0821784076 VTS HF03M1 DRDRDRBRBR
0821784077 VTS HF03M1 GRGRBRDR
0821784078 VTS HF03M1 DRDRDRARARDR
0821784079 VTS HF03M1 DRBRDRBR
0821784080 VTS HF03M1 CRCRCRCRXX
0821784081 VTS HF03M1 DRDRDRDRDRDRDRDRDRXX
0821784082 VTS HF03M1 GRDRARARARBR
0821784083 VTS HF03M1 GRXXDRDRGRGR
0821784084 VTS HF03M1 GRXDRBRBRBRGRGR
0821784085 VTS HF03M1 BRANDRHNX
0821784086 VTS HF03M1 GRGRGRGRBRBRBRBRGRGRGRBRGRBR+
0821784087 VTS HF03M1 GNANGNGNGNGNGNGNGNGNANGNGNGN
0821784088 VTS HF03M1 GRGRGRGRGRGRGRGRGRGRGRGRGRAR+
0821784089 VTS HF03M1 BRBRBRBRBRBRXXXX
0821784090 VTS HF03M1 BRBRBRBRXXXX
0821784091 VTS HF03M1 ANANANANANANGNGN
0821784092 VTS HF03M1 GRHRHRARARARARARARAR
0821784093 VTS HF03M2 GRBRBRBRBRXX
0821784094 VTS HF03M1 ARGRARARARXARARARGRXX
0821784095 VTS HF03M1 ARARARARARARGRXGRBRDRBRXX
0821784096 VTS HF03M1 GRGRBRARGRGRARX
0821784097 VTS HF03M1 GRBRARBR
0821784098 VTS HF03M1 GRARGRBRARGRBRX
0821784099 VTS HF03M1 ARARARGRARGRARAR
0821784100 VTS HF03M1 XGRBRBRGRGRBRBRBRBRBRBRXX
0821784101 VTS HF03M1 BRBRBRBRBRBRBRBRBRBRGRX
0821784102 VTS HF03M1 ARARARARARARARYARARAR
0821784103 VTS HF03M1 ARBRBRBRBRARBRBRBRBRXX
0821784104 VTS HF03M1 ARBRBRBRBRBRBRBRBRBRBRBRBRBR+
0821784105 VTS HF03M1 ARBRBRBRBRBRBRBRX
0821784106 VTS HF03M1 ARARDRARDRARARXXXXXDRARARDR
0821784107 VTS HF03M1 BRDRBRBRDRBRBRBRDRDRBRBRBRGR+
0821784108 VTS HF03M1 GRGRXXBRDRBRBRBRBRBRBRBRBRBR
0821784109 VTS HF03M1 ARARARARARARDRDRBRBRBRBRBRBR+
0821784110 VTS HF03M1 BRBRBRXBRXXX
0821784111 VTS HF03M1 BRBRXXBRBRXX
0821784112 VTS HF03M1 BRBRBRGRXXXX
0821784113 VTS HF03M1 ARARARGRGRARARAR
0821784114 VTS HF03M1 BRBRARBRBRBRBRBRBRBRBRGRGR
0821784115 VTS HF03M1 ARARARARARARARYDRAR
0821784116 VTS HF03M1 ARARBRBRARARBRBRARARCRCRARAR+
0821784117 VTS HF03M1 GRXDRBRBRBRBRXBRBR
0821784118 VTS HF03M1 GRGRGRXDRBRBRBRBRBR
0821784119 VTS HF03M1 GRGRGRGRGRARXXXXXX
0821784120 VTS HF03M1 GRGRGRGRGRGRGRGRGRARARX
0821784121 VTS HF03M1 BRBRBRGRGRGRXX
0821784122 VTS HF03M1 ARARARARARARARARARGRGRGRGRGR+
0821784123 VTS HF03M1 GRGRGRGRARARARDRX
0821784124 VTS HF03M1 ARARARARARGRGRYARAR
0821784125 VTS HF03M1 BRBRBRDRDRBRGRX
0821784126 VTS HF03M1 GRGRGRGRGRGRGRGRARGRXX
0821784127 VTS HF03M1 GRBRBRBRBRGR
0821784128 VTS HF03M1 DRBRBRBRBRDRBRBRBRBRDRGR
0821784129 VTS HF03M1 GRBRBRGRBRGR
0821784130 VTS HF03M1 ARBRARAR
0821784131 VTS HF03M1 ANANANANANBNANBNBNANANAN
0821784132 VTS HF03M1 ARARARARARBRGRX
0821784133 VTS HF03M1 GRXXXDRARBRBRBRARARX
0821784134 VTS HF03M1 GRHRBRBRBRX
0821784135 VTS HF03M1 GRGRGRXDRARGRHRBRBRBRXX
0821784136 VTS HF03M1 BRHRBRBRBRBRBRBRBRBRBRBRXXXX
0821784137 VTS HF03M1 DRDRDRDRDRDRDRGR
0821784138 VTS HF03M1 BRBRBRCRCRCRCRCRCRCRCRCRCRCR+
0821784139 VTS HF03M1 BRBRGRARARARARAR
0821784140 VTS HF03M1 DRARBRDRDRGRGRXX
0821784141 VTS HF03M1 BRBRBRARXXX
0821784142 VTS HF03M1 ARARARARXXX
0821784143 VTS HF03M1 BRBRBRBRGRGRBRXBRBRBRXXXXX
0821784144 VTS HF03M1 GRBRBRBRBRBRXXXX
0821784145 VTS HF03M1 BRBRDRBRDRBRBRDRXXXX
0821784146 VTS HF03M1 ARYDRARDRARARARGRAR
0821784147 VTS HF03M1 BRDRBRBRBRBRBRBRDRGR
0821784148 VTS HF03M1 GRBRBRXXXBRBRDRBRXX
0821784149 VTS HF03M1 BRBRBRXXXXXXBRDRBR
0821784150 VTS HF03M1 GRBRBRBRBRXXXBRBRGRBRDRXXX
0821784151 VTS HF03M1 BRBRXXBRBRXX
0821784152 VTS HF03M1 BRBRBRBRBRBRBRBRGRBRBRBRXXXX
0821784153 VTS HF03M1 BRBRBRBRBRBRBRXXXXX
0821784154 VTS HF03M1 BRBRBRBRBRGRGRBRBRXXX
0821784155 VTS HF03M1 BRBRBRDRBRBRBRBRBRBRBRBRBRBR+
0821784156 VTS HF03M1 BRBRBRBRBRGRXXBRBRDRBRBRBRDR+
0821784157 VTS HF03M1 GRBRXXXXBRBRBRXXX
0821784158 VTS HF03M1 ARARBRBRGRGR
0821784159 VTS HF03M1 ANANANANANANANANANYANANAN
0821784160 VTS HF03M1 BRBRBRARGRBRBRBRARARAR
0821784161 VTS HF03M1 ARBRBRBRARARARARAR
0821784162 VTS HF03M1 BRBRBRBRBRBRBRARAR
0821784163 VTS HF03M1 ARARARARBRBRARBRARBR
0821784164 VTS HF03M1 ARBRGRARARBRBRBRAR
0821784165 VTS HF03M1 BRBRBRBRBRBRBRGRBRARXX
0821784166 VTS HF03M1 BRBRBRBRBRBRBRBRARARXX
0821784167 VTS HF03M1 BRBRBRBRGRGRGRGRGRGR
0821784168 VTS HF03M1 ARGRGRGRGRXX
0821784169 VTS HF03M1 ARARARARARARDRDR
0821784170 VTS HF03M1 ANANANANANANANANANANANBNBNBN
0821784171 VTS HF03M1 GRGRGRGRGRGRGRGRGRARARARARAR+
0821784172 VTS HF03M1 GRGRXXXDRDRBRBRBR
0821784173 VTS HF03M1 BNBNBNBNBNBNBNBNBNBNBNBNBNBN+
0821784174 VTS HF03M1 BRBRDRBRBRBR
0821784175 VTS HF03M1 ARARARARARARXARXXGRGRGRX
0821784176 VTS HF03M1 GRGRGRARGRARARARARARGRGRXX
0821784177 VTS HF03M1 GRGRGRARGRGRDRGRGRDRDRDRDRGR
0821784178 VTS HF03M1 DRGRDRARARDRARARBRDRGRDR
0821784179 VTS HF03M1 BRXXXX
0821784180 VTS HF03M1 DRXXX
0821784181 VTS HF03M1 BRBRDRBRBRDRBRBRBRBRBRXX
0821784182 VTS HF03M1 BRDRBRDRXX
0821784183 VTS HF03M1 GRXDRBRBRDRDRDRXX
0821784184 VTS HF03M1 GRXDRBRBRBRBRBRBRX
0821784185 VTS HF03M1 GRXDRBRBRBR
0821784186 VTS HF03M1 DRBRXX
0821784187 VTS HF03M1 GRGRDRDRBRXXX
0821784188 VTS HF03M1 GRGRGRXDRDRDRGRBRBRBRBR
0821784189 VTS HF03M1 BRBRGRGRGRBRXX
0821784190 VTS HF03M1 GRXXXBRBRDRBRDRGR
0821784191 VTS HF03M1 GRXXXBRBRDRBRBRBRGRGRDR
0821784192 VTS HF03M1 GRXXXBRBRBRDR
0821784193 VTS HF03M1 GRBRBRBRBRARGRGRXXXX
0821784194 VTS HF03M1 BRBRBRBRGRGRXX
0821784195 VTS HF03M1 BRBRGRBRGRXXX
0821784196 VTS HF03M1 BRBRBRGRBRGRXX
0821784197 VTS HF03M1 BRBRXXGRGRGRGRBRBRXXBRBRBRX
0821784198 VTS HF03M1 DRBRDRBRXX
0821784199 VTS HF03M1 GRGRGRXBRDRBRBRBRBRBRBRDRDRB+
0821784200 VTS HF03M1 GRXXXBRBRBRBRXXXXXXXX
0821784201 VTS HF03M1 GRBRARHRHRDRBRARBRGRHRHRHRHR+
0821784202 VTS HF03M1 DRGRDRGRDRGRXXGRGR
0821784203 VTS HF03M1 GRGRGRGRBRXXX
0821784204 VTS HF03M1 BRDRDRBRBRX
0821784205 VTS HF03M1 DRDRDRGRGRBRBRBRBRXX
0821784206 VTS HF03M1 ARARARARARARDNDN
0821784207 VTS HF03M1 GRGRBRBRARBRBRBRBRBRBRBRBR
0821784208 VTS HF03M1 DRDRDRDRBRBRBRBRBRBRBRBR
0821784209 VTS HF03M1 GRDRBRBRBRBRDRGR
0821784210 VTS HF03M1 DRBRDRX
0821784211 VTS HF03M1 GRGRGRGRGRARARARARARGRARARGR+
0821784212 VTS HF03M1 ARARXXGRARGRAR
0821784213 VTS HF03M1 ARARARARGRARARARARARARARARAR+
0821784214 VTS HF03M1 ANANANANANANANANGNGNGNGN
0821784215 VTS HF03M1 BRIRARARAR
0821784216 VTS HF03M1 ARARARGRARGRARXX
0821784217 VTS HF03M1 ARARARGRARXX
0821784218 VTS HF03M1 GRXXXBRBRBRBRBRBRBRBRBRBRXDR
0821784219 VTS HF03M1 GRGRGRGRGRGRGRXBRBRBRBRBRBRX
0821784220 VTS HF03M1 GRXXXBRBRBRDRBR
0821784221 VTS HF03M1 ARARARARBRBRBRXXXARARARAR
0821784222 VTS HF03M1 BRBRBRXXXARARARARDRBRBRX
0821784223 VTS HF03M1 GRGRGRXGRGRXGRGRX
0821784224 VTS HF03M1 XDRDRXGRDRDRX
0821784225 VTS HF03M1 BRARARARARARARAR
0821784226 VTS HF03M1 BRHRBRBRBRBRHRHR
0821784227 VTS HF03M1 GRGRBRBRBRBRBRARXXX
0821784228 VTS HF03M1 ANANBNANAN
0821784229 VTS HF03M1 HRHRARAR
0821784230 VTS HF03M1 ARARARARBRBRBRBRDRYXXX
0821784231 VTS HF03M1 GRGRGRHRARARBRBRDRYXXX
0821784232 VTS HF03M1 ARARARARARARARARARARZZ
0821784233 VTS HF03M1 GRGRGRYARARYARARX
0821784234 VTS HF03M1 CNCNCNCNCNCN
0821784235 VTS HF03M1 BRBRBRBRBRBRBRBRGRXXX
0821784236 VTS HF03M1 BRBRBRARARARXXX
0821784237 VTS HF03M1 GRARARARARARARARARARARARXX
0821784238 VTS HF03M1 DRDRIRXXX
0821784239 VTS HF03M1 BRBRGRBRBRX
0821784240 VTS HF03M1 BRARBRBRBRDRXX
0821784241 VTS HF03M1 BRBRBRBRBRBRARGRX
0821784242 VTS HF03M1 ANANANANGNGNGNGNDN
0821784243 VTS HF03M1 BRBRBRBRBRXXBRXXBR
0821784244 VTS HF03M1 BRBRDRDRDRDRBRBRBRBRXXXX
0821784245 VTS HF03M1 BRXXGRGRXX
0821784246 VTS HF03M1 GRGRGRGRBRBRBRX
0821784247 VTS HF03M1 DRBRBRDRDRDRXX
0821784248 VTS HF03M1 GRGRXXBRGRBRBRBRBRBRX
0821784249 VTS HF03M1 ANDNANGNGNGNGN
0821784250 VTS HF03M1 GRARARBRARGRBRGRBRYARARYBRGR+
0821784251 VTS HF03M1 ARARBRBRXX
0821784252 VTS HF03M1 GRGRGRGRBRBRBRBRARBRBRBRBRBR+
0821784253 VTS HF03M1 GRXXXBRX
0821784254 VTS HF03M1 BRBRBRBRGRYBRGR
0821784255 VTS HF03M1 BRARBRBRGRGR
0821784256 VTS HF03M1 BRBRBRBRGRGRGRGRIRIRIRX
0821784257 VTS HF03M1 GRBRDRBRBRBR
0821784258 VTS HF03M1 ARBRBRARARX
0821784259 VTS HF03M1 ARBRBRBRARARX
0821784260 VTS HF03M1 ANANANANANGNGNGNGNGNXX
0821784261 VTS HF03M1 DRBRBRBRDRBRBRBR
0821784262 VTS HF03M1 HRX
0821784263 VTS HF03M1 GRCRCRCRCRX
0821784264 VTS HF03M1 ARARARBRBRBRBRBRBRBR
0821784265 VTS HF03M1 ARARARARGRARAR
0821784266 VTS HF03M1 GRARARGRARARARAR
0821784267 VTS HF03M1 GRGRGRGRGRXX
0821784268 VTS HF03M1 GRBRBRXX
0821784269 VTS HF03M1 GRGRGRGRBRBRXX
0821784270 VTS HF03M1 GRGRXXXXXXXBRBRDR
0821784271 VTS HF03M1 ARARDRGRARARGRARARXX
0821784272 VTS HF03M1 GRGRGRARARXBRBRBRBRBRBRBRARA+
0821784273 VTS HF03M1 ARBRBRBRBRBRBRBRGR
0821784274 VTS HF03M1 DRDRDRDRDRDRGRGRGR
0821784275 VTS HF03M1 BNBNBNANANANANANANANANANANAN+
0821784276 VTS HF03M1 BRARARARARARARARGR
0821784277 VTS HF03M1 GRARGRARGRGRGRGRGRGR
0821784278 VTS HF03M1 GRXDRGRBRBRBRBRDRBRDRBRBRBRG+
0821784279 VTS HF03M1 GRBRGRBRBRGRBR
0821784280 VTS HF03M1 BRARARBRARXXX
0821784281 VTS HF03M1 ARARBRBRBRBRARX
0821784282 VTS HF03M1 ARBRARBRBRBRXX
0821784283 VTS HF03M1 BRARBRARBRARXX
0821784284 VTS HF03M1 BRBRARBRBRXXX
0821784285 VTS HF03M1 ARARBRARXXXX
0821784286 VTS HF03M1 BRBRBRBRBRBRBRBRBRBRBRBRBRAR+
0821784287 VTS HF03M1 GRGRBRBRBRBRBRBRBRBRARGRBRBR+
0821784288 VTS HF03M1 HRBRBRBRBRBRBRBRBRHRBRBRBRBR+
0821784289 VTS HF03M1 ARARBRARARARDRIRARARAR
0821784290 VTS HF03M1 ARARBRARARARDRIRARARBR
0821784291 VTS HF03M1 BNBNBNBNBNBNBNXXX
0821784292 VTS HF03M1 BRBRBRARBRXXX
0821784293 VTS HF03M1 GRARBRBRARBRARARBRARARBRBRBR+
0821784294 VTS HF03M1 ARARARBRBRBRBRBRBRXXXXXXX
0821784295 VTS HF03M1 GRGRGRARXGRGRGRGRXXXXGR
0821784296 VTS HF03M1 BRXBRGRARXARARARARARARGRGRXG
0821784297 VTS HF03M1 BRBRBRARARARARARARARARAR
0821784298 VTS HF03M1 DRXXXXX
0821784299 VTS HF03M1 GRGRYGRYGRGRYGRGRGRGRGRGRGRG
0821784300 VTS HF03M1 GRGRGRGRGRGRGRGRBRBRBRBRBRXX
0821784301 VTS HF03M1 BRARBRBRBRBRBRBRBRBRBRBRBRBR+
0821784302 VTS HF03M1 BRBRBRBRARBRBRBRARBRBRBRBRBR+
0821784303 VTS HF03M1 BRBRBRBRBRBRBRBRBRBRBRARBRBR+
0821784304 VTS HF03M1 BRARARARARBRBRBRBRBRBRX
0821784305 VTS HF03M1 BRARARARARBRBRBRBRBRBRBRBRAR
0821784306 VTS HF03M1 GRXXXBRBRBRX
0821784307 VTS HF03M1 BRDRARARARARARARARARAR
0821784308 VTS HF03M1 DRDRDRDRDRDRARARARGRGRXX
0821784309 VTS HF03M1 DRARARARARGRXX
0821784310 VTS HF03M1 CNCNCNCNCNCNCNDNXX
0821784311 VTS HF03M1 ARBRDRDRDRDRARARARARARARGRAR
0821784312 VTS HF03M1 ARBRARARBRARARBRARBRARXXXXX
0821784313 VTS HF03M1 DRBRBRBR
0821784314 VTS HF03M1 GRXXXDRYBRGRBRBRDRBRBRXXX
0821784315 VTS HF03M1 GRBRBRARARBRARBRARBRXX
0821784316 VTS HF03M1 ARARARARBRBRBRBRARARBR
0821784317 VTS HF03M1 ARARARARARARIRHRARARGRXXBRBR+
0821784318 VTS HF03M1 ARARARXXARBRBR
0821784319 VTS HF03M1 BRBRBRBRBRBRBRBRBRBRBRXX
0821784320 VTS HF03M2 HNGNBNBN
0821784321 VTS HF03M1 DRDRDRDRDRDRARARARGRXX
0821784322 VTS HF03M1 GRGRGRARXGRGRGRGRGR
0821784323 VTS HF03M1 BRXBRGRARXXXARARARARGRGRXGR
0821784324 VTS HF03M1 GRXXXDRGRBRBRBRBRBRX
0821784325 VTS HF03M1 ARARARARARARBRBRBR
0821784326 VTS HF03M1 BRBRBRBRBRARARX
0821784327 VTS HF03M1 GRARGRARBRDRBRBRARX
0821784328 VTS HF03M1 GRGRARGRARARBRBRARAR
0821784329 VTS HF03M1 GRARGRARGRARBRBRBR
0821784330 VTS HF03M1 GRARGRARARX
0821784331 VTS HF03M1 BRGRBRXGRX
0821784332 VTS HF03M1 BRARARARBRBRAR
0821784333 VTS HF03M1 GRGRXXBRBRBRBR
0821784334 VTS HF03M1 BNBNBNXBNBNBNBNBNBNXBNBNBN
0821784335 VTS HF03M1 GRGRGRGRGRGRBRBRBRBRBR
0821784336 VTS HF03M1 DRDRHRX
0821784337 VTS HF03M1 GRARBRBRGRAR
0821784338 VTS HF03M1 GRGRYBRBRDRBRHRARARXX
0821784339 VTS HF03M1 ARARARARXXXXDRX
0821784340 VTS HF03M1 BRBRBRBRBRBRBRBRDRXXX
0821784341 VTS HF03M1 BRBRBRBRARXXXDRX
0821784342 VTS HF03M1 ARGRBRDRX
0821784343 VTS HF03M1 GRDRBRBRBRBRXXX
0821784344 VTS HF03M1 GRGRARGRGRARXX
0821784345 VTS HF03M1 DRBRBRBRXX
0821784346 VTS HF03M1 BRBRXXXX
0821784347 VTS HF03M1 GNYGNGNANAN
0821784348 VTS HF03M1 ARARARBRARARARARARARARARBRAR+
0821784349 VTS HF03M1 ARBRARARARARARARARARBRARARAR
0821784350 VTS HF03M1 BRARARYARARARARYARX
0821784351 VTS HF03M1 ARBRARARARARARARBRBRARARX
0821784352 VTS HF03M1 ARBRARARARBRARBRARARARARYGRX
0821784353 VTS HF03M1 BRARARBRARARBRARARBRARARARAR
0821784354 VTS HF03M1 ARARBRARARARARXX
0821784355 VTS HF03M1 GRARBRDR
0821784356 VTS HF03M1 DRGRBRBRBRDRDRY
0821784357 VTS HF03M1 BRCR
0821784358 VTS HF03M1 CRCRCR
0821784359 VTS HF03M1 DRGRDRDRDRDRDRDRDRDRDR
0821784360 VTS HF03M1 ARARARARARARARARARARARARARAR
0821784361 VTS HF03M1 BRBRBRBRBRBRARAR
0821784362 VTS HF03M1 XARARARARX
0821784363 VTS HF03M1 DRDRDRDRARARARARGRGR
0821784364 VTS HF03M1 DNBNBNXX
0821784365 VTS HF03M1 BRGRGRGR
0821784366 VTS HF03M1 BRGRGR
0821784367 VTS HF03M1 XXXBRDRBRDRBRBRBRBRBR
0821784368 VTS HF03M1 XXXBRDRDRBRBRBRBRBRBR
0821784369 VTS HF03M1 XXXBRDRBRBRBRBRBRBRDRBRBRBRB
0821784370 VTS HF03M1 GRBRXBRXXARX
0821784371 VTS HF03M1 BRBRARARARBRXARARBRARARXX
0821784372 VTS HF03M1 ARARBRBRBRBRGRX
0821784373 VTS HF03M1 DRDRDRDRHRXX
0821784374 VTS HF03M1 GRBRGRBRXXXX
0821784375 VTS HF03M1 ARARXXGRGRGRARARXARGR
0821784376 VTS HF03M1 ARARGRGRXX
0821784377 VTS HF03M1 BRXBRGRARXARXXXARXGRGRXGR
0821784378 VTS HF03M1 ARARARARARARARARARGRGRGR
0821784379 VTS HF03M1 DRDRGRX
0821784380 VTS HF03M1 GRXXXDRBRBRBRBRX
0821784381 VTS HF03M1 ARARARARARXARARAR
0821784382 VTS HF03M1 GRARBRBRARXXX
0821784383 VTS HF03M1 BRGRGRGRGRGRGRGRGRGRGRGRXXXX
0821784384 VTS HF03M1 GRARBRBRBRBRBRAR
0821784385 VTS HF03M1 BRBRBRBRARGRGRGRGRGRGRGRGRGR+
0821784386 VTS HF03M1 ARARARARARARARARARARARARGRXX
0821784387 VTS HF03M1 GRGRXXBRBRBRBRXX
0821784388 VTS HF03M1 GRGRBRBRBRBRBRBRBRBRBRBRBRGR+
0821784389 VTS HF03M1 GRXXXDRDRBRBR
0821784390 VTS HF03M1 GRGRBRBRBRBRBRBRBRBRBRGR
0821784391 VTS HF03M1 DRBRBRDRBRBRBRXXXXXXX
0821784392 VTS HF03M1 GRGRXBRBRBRXBRBRDRDRBR
0821784393 VTS HF03M1 GNGNGNBNGN
0821784394 VTS HF03M1 GNGNGNGNGNGNGNGNBNGNGNGN
0821784395 VTS HF03M1 GNGNGNGNANGNGNANGNBNGNGNBNGN
0821784396 VTS HF03M1 GNBNGNGN
0821784397 VTS HF03M1 GNBNBNBNGN
0821784398 VTS HF03M1 CNGNGNGNCNGNGNGN
0821784399 VTS HF03M1 BRDRBRDRBRDRXXX
0821784400 VTS HF03M1 GRGRGRGRARARARARBRBRBRBRYYXX
0821784401 VTS HF03M1 HRHRHRBRBRBRBRBRBRBRBRARARXX
0821784402 VTS HF03M1 DRDRDRARARARARARARARAR
0821784403 VTS HF03M1 DRBRBRDRDRDRBRX
0821784404 VTS HF03M1 DRDRDRDRBRDRXXGRGRXX
0821784405 VTS HF03M1 DRBRXXGRX
0821784406 VTS HF03M1 DRBRXXGRX
0821784407 VTS HF03M1 DRDRBRBRBRBRXXGRGRGRX
力士乐溢流阀的常见故障原因分析及排除方法
力士乐溢流阀的常见故障原因分析及排除方法溢流阀在使用中，常见的故障有噪声、振动、阀芯径向卡紧和调压失灵等。 (一)噪声和振动 液压装置中容易产生噪声的元件一般认为是泵和阀，阀中又以溢流阀和电磁换向阀等为主。产生噪声的因素很多。溢流阀的噪声有流速声和机械声二种。流速声中主要由油液振动、空穴以及液压冲击等原因产生的噪声。机械声中主要由阀中零件的撞击和磨擦等原因产生的噪声。 (1)压力不均匀引起的噪声 先导型溢流阀的导阀部分是一个易振部位如图3所示。在高压情况下溢流时，导阀的轴向开口很小，仅0.003～0.006厘米。过流面积很小，流速很高，可达200米/秒，易引起压力分布不均匀，使锥阀径向力不平衡而产生振动。另外锥阀和锥阀座加工时产生的椭圆度、导阀口的脏物粘住及调压弹簧变形等，也会引起锥阀的振动。所以一般认为导阀是发生噪声的振源部位。 由于有弹性元件(弹簧)和运动质量(锥阀)的存在，构成了一个产生振荡的条件，而导阀前腔又起了一个共振腔的作用，所以锥阀发生振动后易引起整个阀的共振而发出噪声，发生噪声时一般多伴随有剧烈的压力跳动。 (2)空穴产生的噪声 当由于各种原因，空气被吸入油液中，或者在油液压力低于大气压时，溶解在油液中的部分空气就会析出形成气泡，这些气泡在低压区时体积较大，当随油液流到高压区时，受到压缩，体积突然变小或气泡消失；反之，如在高压区时体积本来较小，而当流到低压区时，体积突然增大，油中气泡体积这种急速改变的现象。气泡体积的突然改变会产生噪声，又由于这一过程发生在瞬间，将引起局部液压冲击而产生振动。先导型溢流阀的导阀口和主阀口，油液流速和压力的变化很大，很容易出现空穴现象，由此而产生噪声和振动。力士乐溢流阀的常见故障原因分析及排除方法 (3)液压冲击产生的噪声 先导型溢流阀在卸荷时，会因液压回路的压力急骤下降而发生压力冲击噪声。愈是高压大容量的工作条件，这种冲击噪声愈大，这是由于溢流阀的卸荷时间很短而产生液压冲击所致在卸荷时，由于油流速急剧变化，引起压力突变，造成压力波的冲击。压力波是一个小的冲击波，本身产生的噪声很小，但随油液传到系统中，如果同任何一个机械零件发生共振，就可能加大振动和增强噪声。所以在发生液压冲击噪声时，一般多伴有系统振动。 (4)机械噪声 先导型溢流阀发出的机械噪声，一般来自零件的撞击和由于加工误差等产生的零件磨擦。 在先导型溢流阀发出的噪声中，有时会有机械性的高频振动声，一般称它为自激振动声。这是主阀和导阀因高频振动而发生的声音。它的发生率与回油管道的配置、流量、压力、油温(粘度)等因素有关。一般情况下，管道口径小、流量少、压力高、油液粘度低，自激振动发生率就高。 减小或消除先导型溢流阀噪声和振动的措施，一般是在导阀部分加置消振元件。 消振套一般固定在导阀前腔，即共振腔内，不能自由活动。在消振套上都设有各种阻尼孔，以增加阻尼来消除震动。另外，由于共振腔中增加了零件，使共振腔的容积减小，油液在负压时刚度增加，根据刚度大的元件不易发生共振的原理，就能减少发生共振的可能性。 消振垫一般与共振腔活动配合，能自由运动。消振垫正反面都有一条节流槽，油液在流动时能产生阻尼作用，以改变原来的流动情况。由于消振垫的加入，增加了一个振动元件，扰乱了原来的共振频率。共振腔增加了消振垫，同样减少了容积，增加了油液受压时的刚度，以减少发生共振的可能性。 在消振螺堵上设有蓄气小孔和节流边，蓄气小孔中因留有空气，空气在受压时压缩，压缩空气具有吸振作用，相当于一个微型吸振器。小孔中空气压缩时，油液充入，膨胀时，油液压出，这样就增加了一个附加流动，以改变原来的流动情况。故也能减小或消除噪声和振动。 另外，如果溢流阀本身的装配或使用权用不当，也都会造成振动，产生噪声。如三节同心式溢流阀，装配时三节同心配合不当，使用时流量过大或过小，锥阀的不正常磨损等。在这种情况下，应认真检查调整，或更换零件。 (二)阀芯径向卡紧 因加工精度的影响，造成主阀芯径向卡紧，使主阀开启不上压或主阀关闭不卸压，另因污染造成径向卡紧。 (三)调压失灵 溢流阀在使用中有时会出现调压失灵现象。先导型溢流阀调压失灵现象有二种情况：一种是调节调压手轮建立不起压力，或压力达不到额定数值；另一种调节手轮压力不下降，甚至不断升压。出现调压失灵，除阀芯因种种原因造成径向卡紧外，还有下列一些原因： 第一是主阀体(2)阻尼器堵塞，油压传递不到主阀上腔和导阀前腔，导阀就失去对主阀压力的调节作用。因主阀上腔无油压力，弹簧力又很小，所以主阀变成了一个弹簧力很小的直动型溢流阀，在进油腔压力很低的情况下，主阀就打开溢流，系统就建立不起压力。 压力达不到额定值的原因，是调压弹簧变形或选用错误，调压弹簧压缩行程不够，阀的内泄漏过大，或导阀部分锥阀过度磨损等。 第二是阻尼器(3)堵塞，油压传递不到锥阀上，导阀就失去了支主阀压力的调节作用。阻尼器(小孔)堵塞后，在任何压力下锥阀都不会打开溢流油液，阀内始终无油液流动，主阀上下腔压力一直相等，由于主阀芯上端环形承压面积大于下端环形承压面积，所以主阀也始终关闭，不会溢流，主阀压力随负载增加而上升。当执行机构停止工作时，系统压力就会无限升高。除这些原因以外，尚需检查外控口是否堵住，锥阀安装是否良好等。 (四)其它故障 溢流阀在装配或使用中，由于O形密封圈、组合密封圈的损坏，或者安装螺钉、管接头的松动，都可能造成不应有的外泄漏。 如果锥阀或主阀芯磨损过大，或者密封面接触不良，还将造成内泄漏过大，甚至影响正常工作。 电磁溢流阀常见的故障有先导电磁阀工作失灵、主阀调压失灵和卸荷时的冲击噪声等。后者可通过调节加置的缓冲器来减少或消除。如不带缓冲器，则可在主阀溢流口加一背压阀。(压力一般调至5kgf/cm2左右，即0.5MPa)