DB3U10H-3-30B/315G24NZ5L華德電磁閥
北京華德液壓A2F28R4P4主油泵 密封破損；(6)鑄鐵泵殼有砂眼或焊接不良。當(dāng)凸輪的凸起部分轉(zhuǎn)過去后，在彈簧力的作用下，柱塞向下運(yùn)動(dòng)，柱塞上部空間（稱為泵油室）產(chǎn)生真空度，當(dāng)柱塞上端面把柱塞套上的進(jìn)油孔打開后，充滿在油泵上體油道內(nèi)的柴油經(jīng)油孔進(jìn)入泵油室，柱塞運(yùn)動(dòng)到下止點(diǎn)，進(jìn)油結(jié)束。變量式軸向柱塞泵的斜盤傾角為零時(shí)稱為中位，此時(shí)泵的輸出流量應(yīng)為零。但有時(shí)會(huì)出現(xiàn)中位偏離調(diào)整機(jī)構(gòu)中點(diǎn)的現(xiàn)象，在中點(diǎn)時(shí)仍有流量輸出。其原因是控制器的位置偏離、松動(dòng)或損傷，需要重新調(diào)零、緊固或更換。泵的角度維持力不夠、傾斜角耳軸磨損也會(huì)產(chǎn)生這種現(xiàn)象。(1)機(jī)械振動(dòng)和噪聲變量式軸向柱塞泵的斜盤傾角為零時(shí)稱為中位，此時(shí)泵的輸出流量應(yīng)為零。但有時(shí)會(huì)出現(xiàn)中位偏離調(diào)整機(jī)構(gòu)。 柱塞向一個(gè)方向運(yùn)動(dòng)時(shí)缸內(nèi)出現(xiàn)負(fù)壓，這時(shí)一個(gè)單向閥打開液體被吸入缸，柱塞向另一個(gè)方向運(yùn)動(dòng)時(shí)，將液體壓縮后另一個(gè)單向閥被打開，被吸入缸內(nèi)的液體被排出，這種工作方式連續(xù)運(yùn)動(dòng)后就形成了連續(xù)供油，1．液壓泵輸出流量不足或不輸出油液實(shí)際上。VDR-11B-2A2-2A3-22 VDR-11B-2A3-2A3-22 VDS葉片泵 VDS系列的葉片泵具有降低動(dòng)力損失的高效運(yùn)行，噪音低，外形小，結(jié)構(gòu)簡單，操作簡便， 快速的特性和敏銳的響應(yīng)性，效果高，壽命長，結(jié)構(gòu)牢固等特點(diǎn)。
2.順序閥的應(yīng)用 應(yīng)用順序閥.可以使兩個(gè)以_L的執(zhí)行元件按預(yù)定的順序動(dòng)作。并可將順序閥用作背環(huán)閥、平衡閥、卸荷閥.或用來保證油路最低工作壓力。 如圖5-19所示為順序動(dòng)作回路，夾具上實(shí)現(xiàn)先定位后夾緊工作順序的液壓控制。油液經(jīng)兩位四通電磁換向閥進(jìn)一入定位缸A下腔.實(shí)現(xiàn)定位動(dòng)作。這個(gè)過程中，由于壓力未達(dá)到順序調(diào)定值，故夾緊缸不動(dòng)作二待定位完成.油壓升高。達(dá)到順序閥調(diào)定值時(shí)，順序閥開啟，油液經(jīng)順序閥進(jìn)入夾緊缸，進(jìn)行夾緊。為保證可靠工作，順序閥調(diào)定壓力值大于定位缸0.5~0.8Mpa。
北京華德方向閥
S型單向閥
S6P010B/
S6A110B/
S6K110B/
S6P110B/V
S6A110B/V
S6K210B/V
S…P…1B/型板式單向閥
S10P11B/
S30P31B/V
RVP型單向閥
RVP610B/
RVP1210B/V
SZ8A型單向阻尼閥
SZ8A010B/
SZ8A310B/V
SZ8A510B/V
M…SR…KE…10B/型插裝式單向閥
M-SR8KE00-10B/
M-SR25KE00-10B/
M-SR10KE00-10B/V
M-SR15KE00-10B/V
M-SR25KE05-10B/V
M-SR30KE05-10B/V
Z1S…30B/型疊加式單向閥
Z1S6A1-30B/
Z1S6B1-30B/
Z1S6C1-30B/
Z1S6D1-30B/
Z1S6E1-30B/
Z1S6F1-30B/
Z1S6P1-30B/
Z1S6T1-30B/
Z1S6A2-30B/V
Z1S6B2-30B/V
Z1S6C2-30B/V
Z1S6D2-30B/V
Z1S6E2-30B/V
Z1S6F2-30B/V
Z1S6P2-30B/V
Z1S6T2-30B/V
Z2S型疊加式液控單向閥
Z2S61-20B/
Z2S6A1-20B/
Z2S6A2-20B/
Z2S62-40B/V
Z2S63-40B/V
Z2S6A1-20B/V
Z2S6A2-20B/V
Z2S型疊加式液控單向閥（新系列）
Z2S61-30B/
Z2S6A4-50B/
Z2S6B1-30B/
Z2S6B2-30B/
Z2S63-30B/V
Z2S6A3-30B/V
Z2S6A1-30B/V
Z2S6A2-30B/V
Z2S6A4-30B/V
SV/SL…30B/型液控單向閥
SVSV10PA1-30B/
SVSV15PA1-30B/
SVSV25PA1-30B/V
SVSV30PA1-30B/V
SVSV10PA1-30B/
SLSV20PA1-30B/
SLSV25PA1-30B/
SLSV10PA3-30B/V
SLSV30PA2-30B/V
SVSV10PA1-40B/
SV/SL…40B系列型液控單向閥
SVSV32PA1-40B/
SVSV20PA4-40B/V
SVSV25PA4-40B/V
SVSV32PA4-40B/V
SLSV32PA1-40B/
SLSV16PA2-40B/
SLSV10PA3-40B/
SLSL32GA2-40B/
SLSL25GA2-40B/V
3WMD6P50=50B/
WMD型旋轉(zhuǎn)鈕換向閥
4WMD6U50=50B/V
4WMD6V50=50B/V
WMM型手動(dòng)換向閥
H-3WM6E50B/
H-3WM6E10B/V
H-3WM6F50B/F
H-3WM6F50B/FV
H-3WM6E10B/FB08
H-3WM6E50B/FB10
H-3WM6E10B/FB08V
H-3WM6E50B/FB10V
H-4WM6E50B/V
H-4WM6E10B/
H-4WM6E50B/F
H-4WM6E10B/FV
H-4WM6F50B/FB08
H-4WM6F50B/FB08V
3WMM10A30B/
WMM…30B/型手動(dòng)換向閥
3WMM10G30B/ B08
3WMM10R30B/ B12
3WMM10E30B/V
3WMM10F30B/ B08V
3WMM10H30B/ B10V
3WMM10R30B/ B12V
3WMM10D30B/F
3WMM10P30B/ BF08
3WMM10R30BF/V
3WMM10D30B/BF08V
3WMM10P30B/ BF10V
3WMM10E30B/ BF12V
B-H10型手動(dòng)換向閥
華德B- H10型手動(dòng)換向閥
3WMU6A50B/
WMU/R型滾輪換向閥
3WMU6R50B/ B08
3WMU6P50B/V
3WMU6G50B/ B08V
3WMR6U50B/V
3WMR6F50B/ B08V
3WMR6V50B/ B12V
3WMU10R50B/ B08
3WMU10T30B/ B12V
3WMR10L30B/
3WMR10Y30B/ B08
3WMR10J30B/V
3WMR10M30B/ B08V
4WMU6P30B/ B08
4WMRH30B/V
4WMRU30B/ B12
4WMRV30B/ B08V
4WMRC30B/ B10V
4WMU10P30B/
WE4型電磁換向閥
3WE410B/A=G12Z5
3WE410B/A=G12Z5B10
3WE410B/A=G12Z5B08V
3WE41OB/A=W220-50Z4B12
3WE41OBOF/A=W220-50 N9Z5LB10
3WE41OBOF/A=W220-50 N9Z5LB12
3WE41OB/A=W220-50Z5V
3WE41OB/A=W220-50Z5LB08V
3WE41OB/A=W220-50 N9Z5LB10V
3WE41OBO/A=W220-50Z5V
3WE41OB/A=G24 N9Z5L
3WE41OB/A=G24 N9Z4B08V
