無(wú)標(biāo)記 = 主閥彈簧復(fù)位或?qū)χ?/div>
"*"--滑閥機(jī)能見(jiàn)機(jī)能符號(hào)圖
"*"--20 = 20系列(NG10)，20~29系列安裝及連接尺寸不變
50 = 50系列(NG16,25,32)，50~59系列安裝及連接尺寸不變
"B"--北京華德液壓技術(shù)
"*"--O = 無(wú)彈簧復(fù)位
OF = 無(wú)彈簧復(fù)位，有定位器（WH無(wú)此項(xiàng)）
"*"--A = 普通電磁鐵
E = 螺紋連接電磁鐵
"*"--G24 = 直流電源24V
W220-50 = 交流電源220V，頻率50Hz
W110R = 用直流電磁鐵，使用與頻率無(wú)關(guān)的交流電壓110V
W220R = 220V（WH無(wú)此項(xiàng)）
其它電壓見(jiàn)電氣參數(shù)表
"*"--無(wú)標(biāo)記 = 不帶故障檢查按鈕
N = 帶故障檢查按鈕（WH無(wú)此項(xiàng)）
"*"--控制油結(jié)構(gòu)型式：
無(wú)標(biāo)記 = 外供外排型
E = 內(nèi)供外排型
ET = 內(nèi)供內(nèi)排型
T = 外供內(nèi)排型
"*"--無(wú)標(biāo)記 = 沒(méi)有換向時(shí)間調(diào)節(jié)器
S = 有換向時(shí)間調(diào)節(jié)器，進(jìn)口節(jié)流
S2 = 有換向時(shí)間調(diào)節(jié)器，出口節(jié)流
"*"--電器連接型式：見(jiàn)電器連接尺寸圖（WH無(wú)此項(xiàng)）
"*"--附加裝置號(hào)：見(jiàn)附加裝置位置圖
"*"--無(wú)標(biāo)記 = 不帶插入式阻尼器
B08 = 阻尼器節(jié)流孔0.8mm
B10 = 阻尼器節(jié)流孔1.0mm
B12 = 阻尼器節(jié)流孔1.2mm
B15 = 阻尼器節(jié)流孔1.5mm
WH無(wú)此項(xiàng)
"*"--無(wú)標(biāo)記 = 不帶預(yù)壓閥
P4.5 = 帶預(yù)壓閥，開(kāi)啟壓力0.45Mpa
"*"--無(wú)標(biāo)記 = 不帶定比壓力閥
D1 = 定比減壓閥（減壓比1:0.66）
"*"--無(wú)標(biāo)記 = 礦物質(zhì)液壓油
V = 磷酸脂液壓油
"*"--其它細(xì)節(jié)用文字說(shuō)明
……
古者小學(xué)，教以灑掃、應(yīng)對(duì)、進(jìn)退之節(jié)，愛(ài)親、敬長(zhǎng)、隆師、親友之道，皆所以為修身、齊家、治國(guó)、平天下。—— 宋·朱熹《題小學(xué)》
4WEH25E50B/6EG24NETZ5L華德電液換向閥
華德 液壓閥 方向控制閥 液控?fù)Q向閥 Huade 換向滑閥 閥門(mén) 電磁閥 先導(dǎo)閥 方向閥
Huade Hydraulics
北京華德液壓
液壓閥 方向閥 方向控制閥
二位三通、二位四通和三位四通先導(dǎo)式方向滑閥
WEH.../WH...20B/50B...型電液換向閥/液控?fù)Q向閥
型號(hào)列舉
4WEH10D20B/6AG24NETZ4
4WEH10D20B/6EG24NETZ5L
4WEH10E20B/6EG24NETZ4B10D1
4WEH10EB20B/6AG24NZ4
4WEH10HD20B/OF6AG24NETS2Z5L
4WEH10J20B/6AG24NETZ4
4WEH10J20B/6AG24NETZ5L
4WEH10J20B/6AW220-50NETZ5L
4WEH10J20B/6EG24NETS2Z5L
4WEH10J20B/6EW220-50NETSZ5L
4WEH10R20B/6AG24NETSZ5L
4WEH10R20B/6EG24NEZ5L
電液換向閥/液控?fù)Q向閥
4WEH16C50B/6AG24NZ4CQ
4WEH16C50B/6EG24NETS2Z5L
4WEH16C50B/6EG24NETZ4
4WEH16C50B/6EG24NETZ5L
4WEH16C50B/6EG24NEZ5L
4WEH16D50B/6AG24NZ4
4WEH16D50B/6AG24NZ4CQ
4WEH16D50B/6AW220-50NETS2Z5LB10
4WEH16D50B/6EG24N9Z4
4WEH16D50B/6EG24NETZ4
4WEH16D50B/6EG24NETZ5L
4WEH16D50B/6EW110-50NETS2DL
4WEH16D50B/OF6EG24NETS2Z5L
4WEH16D50B/OF6EG24NETZ5L
4WEH16D50B/OF6EG24NZ5L
4WEH16E50B/6AG24NETS2Z4
4WEH16E50B/6AW220RNETZ5L
4WEH16E50B/6EG24NES2Z5L
4WEH16E50B/6EG24NETS2Z5L
4WEH16E50B/6EG24NETZ4
4WEH16E50B/6EG24NETZ4B10
4WEH16E50B/6EG24NETZ5L
4WEH16E50B/6EG24NETZ5LB12
4WEH16E50B/6EG24NEZ4
4WEH16E50B/6EG24NEZ5L
4WEH16E50B/6EG24NZ4
4WEH16E50B/6EG24NZ5L
4WEH16E50B/6EW220-50NETZ4
4WEH16E50B/6EW220-50NETZ5L
4WEH16E50B/6EW220-50NZ4
4WEH16E50B/6EW220-50NZ5L/10B10
4WEH16EB20B/6AG24NZ4
4WEH16G50B/6AG24NETZ5L
4WEH16G50B/6EG24NETZ5LP4.5
4WEH16G50B/6EG24NEZ5LP4.5
4WEH16G50B/6EG24NSZ5LP4.5
4WEH16G50B/6EG24NZ4
4WEH16H50B/6EG24NETZ4P4.5
4WEH16H50B/6EG24NEZ5L
4WEH16HD50B/OF6EG24NES2Z5L
4WEH16HD50B/OF6EG24NETZ4
4WEH16J50B/6AG24NETS2Z4
4WEH16J50B/6AW220-50NETS2Z5LB10
4WEH16J50B/6EG24NES2Z5L
4WEH16J50B/6EG24NETS2Z5L
4WEH16J50B/6EG24NETZ4
4WEH16J50B/6EG24NETZ5L
4WEH16J50B/6EG24NZ5L
4WEH16J50B/6EW220-50NETS2Z4
4WEH16JB50B/6EG24NES2Z5L
4WEH16L50B/6EG24NETZ5L
4WEH16L50B/6EW220-50NETZ4
4WEH16M50B/6EG24NETZ5L
4WEH16Q50B/6AG24NETS2Z5L
4WEH16Q50B/6EG24NESZ5LB08D1
4WEH16S50B/6EW220-50NETSZ5LP4.5
4WEH16S50B/6EW220-50NETZ4
4WEH16T50B/6AG24NEZ4
4WEH16T50B/6EG24NZ4
4WEH16U50B/6EG110NETS2Z5L
4WEH16U50B/6EG24NETZ4
4WEH16U50B/6EW220-50NETZ5L
4WEH16Y50B/6EG24NETZ5L
電液換向閥/液控?fù)Q向閥
4WEH25C50B/6AG24NETZ5LP4.5
4WEH25C50B/6AG24NEZ5LP4.5
4WEH25C50B/6EG24NETSZ5L
4WEH25C50B/6EG24NETZ4
4WEH25C50B/6EW220-50NEZ4
4WEH25D50B/6EG24NETSZ5L
4WEH25D50B/6EG24NETZ5L
4WEH25D50B/6EG24NEZ5LP4.5
4WEH25D50B/OF6EG24NETZ5L
4WEH25E50B/6EG24NETS2Z5L
4WEH25E50B/6EG24NEZ5L
4WEH25E50B/6EG24NZ4
4WEH25E50B/6EW110-50NTDL
4WEH25E50B/6EW220-50NETZ4
4WEH25H50B/6EG24NZ5L
4WEH25H50B/6EW220-50NETSZ5LP4.5
4WEH25HC50B/OF6EG24NES2Z4
4WEH25HD50B/OF6AG24NETS2Z5L
4WEH25HD50B/OF6EG24NETS2Z5L
4WEH25J50B/6EG24NETZ4
4WEH25J50B/6EG24NETZ5L
4WEH25J50B/6EG24NETZ5L/V
4WEH25J50B/6EG24NZ5L
4WEH25J50B/6EW110-50NTDL
4WEH25K50B/6EG24NTZ5L
4WEH25K50B/6EW220-50NTZ5L
4WEH25L50B/6AG24NETZ5LB10
4WEH25L50B/6EG220-50NETZ5L
4WEH25L50B/6EG24NEZ4
4WEH25L50B/6EG24NEZ5L
4WEH25L50B/6EW220-50NETZ4
4WEH25L50B/6EW220-50NZ4
4WEH25T50B/6EW220-50NTZ5L
4WEH25U50B/6EG24NZ5L
4WEH25U50B/6EG24NZ5L/10B10
4WEH25U50B/6EW220-50NETZ5LB12
4WEH25Y50B/6EG24NEZ5LP4.5
電液換向閥/液控?fù)Q向閥
4WEH32E50B/6EW220-50NETZ5L
4WEH32E50B/6EW220-50NEZ5L
4WEH32U50B/6EG24NEZ5L
4WEH32U50B/6EW220-50NETZ5L
……
師范啟其塞，小學(xué)導(dǎo)其源；中學(xué)正其流，專(zhuān)門(mén)別其派，大學(xué)會(huì)其歸。—— 清·張謇《正告南通自立非自立各學(xué)生及教職員》
Huade Hydraulics
北京華德液壓
液壓閥 方向閥 方向控制閥
二位三通、二位四通和三位四通先導(dǎo)式方向滑閥
WEH.../WH...20B/50B...型電液換向閥/液控?fù)Q向閥
型號(hào)列舉
H-4WEH16C50B/6EW110-50NES2Z5L
H-4WEH16C50B/6EW110-50NETS2Z5L
H-4WEH16D50B/6EG24NETS2Z5LP4.5
H-4WEH16D50B/6EG24NETZ5L
H-4WEH16E50B/6EG24NETS2Z5L
H-4WEH16E50B/6EG24NETSZ5L
H-4WEH16E50B/6EG24NETZ4
H-4WEH16E50B/6EG24NETZ5L
H-4WEH16E50B/6EG24NEZ4B10
H-4WEH16E50B/6EG24NEZ5L
H-4WEH16E50B/6EW110-50NES2Z5LB15P4.5
H-4WEH16E50B/6EW220-50NETZ5L
H-4WEH16E50B/6EW220RNETZ5L
H-4WEH16G50B/6EG24NETZ5LP4.5
H-4WEH16H50B/6EG24NEZ5L
H-4WEH16J50B/6AW220-50NETS2N5L
H-4WEH16J50B/6EG24NETSZ5L
H-4WEH16J50B/6EG24NETZ5L
H-4WEH16J50B/6EG24NZ5L
H-4WEH16J50B/6EW110-50NETS2Z5L
H-4WEH16R50B/6EG24NETZ5L
H-4WEH16T50B/6EG24NETZ5L
H-4WEH16T50B/6EG24NTS2Z5L
H-4WEH25C50B/6EG24NZ5L
H-4WEH25D50B/6EG24NZ5L
H-4WEH25D50B/6EG24NZ5LP4.5
H-4WEH25E50B/6AG24NETSZ4B12/FB
H-4WEH25E50B/6AG24NETZ4/FB
H-4WEH25E50B/6AG24NEZ4B10/FB
H-4WEH25E50B/6AW220-50NETZ4
H-4WEH25E50B/6AW220-50NEZ4B10/FB
H-4WEH25E50B/6EG24NETSZ5L
H-4WEH25E50B/6EG24NETZ4
H-4WEH25E50B/6EG24NETZ5L
H-4WEH25E50B/6EG24NEZ4B10
H-4WEH25E50B/6EW220-50NETS2Z4
H-4WEH25E50B/6EW220-50NZ4
H-4WEH25G50B/6EG24NETZ5L
H-4WEH25G50B/6EG24NTSZ5L
H-4WEH25G50B/6EG24NTZ4
H-4WEH25G50B/6EG24NTZ4B10
H-4WEH25G50B/6EG24NTZ5LB10
H-4WEH25H50B/6EG24NZ5L
H-4WEH25J50B/6AG110NETS2Z5L
H-4WEH25J50B/6AG24NEZ4
H-4WEH25J50B/6AW220-50NETS2Z5LB12
H-4WEH25J50B/6EG24NETZ4
H-4WEH25J50B/6EG24NETZ5L
H-4WEH25J50B/6EG24NETZ5LB10
H-4WEH25U50B/6AG24NEZ4
H-4WEH25U50B/6AW220-50NETS2Z5L
H-4WEH25U50B/6EG24NES2Z4
H-4WEH32E50B/6EG24NEZ5L
H-4WEH32E50B/6EG24NZ4
H-4WEH32E50B/6EW220-50NETZ4
H-4WEH32G50B/6EG24NETS2Z5LB10P4.5/V
H-4WEH32G50B/6AG24NETS2Z5L
H-4WEH32H50B/6EG24NETS2Z5LB10P4.5/V
H-4WEH32J50B/6EG24NZ5L
H-4WEH32L50B/6EG24NEZ5L
……
振興，必先廣儲(chǔ)師范，師資不敷，何以興盛！—— 清·張之洞《札學(xué)務(wù)處改修兩湖師范學(xué)堂》
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