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VICKERS比例閥的主閥般來說和換向閥樣是滑閥結構,只不過閥芯的換向不是靠電磁鐵來推動,而是靠前置閥輸出的液壓力來推動,這點和電液換向閥比較相似,只不過電液換向閥的前置閥是電磁換向閥,而伺服閥的前置閥是動態特性比較的噴嘴擋板閥或射流管閥。
也就是(shi)(shi)說,伺服閥(fa)(fa)(fa)的主閥(fa)(fa)(fa)是(shi)(shi)靠前置(zhi)(zhi)閥(fa)(fa)(fa)的輸出壓(ya)力(li)來控制(zhi)的,而前置(zhi)(zhi)閥(fa)(fa)(fa)的壓(ya)力(li)則來自于伺服閥(fa)(fa)(fa)的入口(kou)(kou)p,假如p口(kou)(kou)的壓(ya)力(li)不(bu)足,前置(zhi)(zhi)閥(fa)(fa)(fa)就不(bu)能輸出足夠的壓(ya)力(li)來推動(dong)主閥(fa)(fa)(fa)芯動(dong)作(zuo)。
電磁閥型號表示方法
1、防爆(bao)形式(shi)代號(hao)---防爆(bao)型用“F",不是防爆(bao)不表示(shi)
2、控制方式代號---常(chang)開用(yong)“K",常(chang)閉(bi)不表示,自(zi)保持用(yong)“Z"
3、耐溫(wen)等代號(hao)---低溫(wen)用“L",高溫(wen)用“G",常溫(wen)不表示(shi)
4、結構形式代號---直(zhi)動式用(yong)“0",分步(bu)直(zhi)動式用(yong)“3",導式用(yong)“5"
5、連(lian)接方式代號(hao)---內(nei)螺紋用(yong)“1",外螺紋用(yong)“2",法(fa)蘭用(yong)“4",焊(han)接用(yong)“6",活接用(yong)“7"卡(ka)(ka)箍用(yong)“8",卡(ka)(ka)套用(yong)“9",
6、公稱通徑的(de)大小DN(mm)
7、耐壓(ya)等代號---低壓(ya)-0.1-1.6MPa不表示(shi),中壓(ya)2.0-6.4MPa用“M",高壓(ya)6.5MPa-99MPa用“H",高壓(ya)100MPa以上用“G"
8、閥(fa)體材質(zhi)代號---鑄鐵用(yong)(yong)“Z"鑄鋼用(yong)(yong)“C",不銹鋼304用(yong)(yong)“P",316用(yong)(yong)“R",316L用(yong)(yong)“RL",鋁合金用(yong)(yong)“L",黃銅用(yong)(yong)“T",聚四氟用(yong)(yong)“F",聚丙烯用(yong)(yong)“J",PVC用(yong)(yong)“S",CPVC用(yong)(yong)“SC"
9、附加功(gong)(gong)能(neng)代號---帶信號反饋功(gong)(gong)能(neng)用(yong)“X",帶手(shou)動(dong)功(gong)(gong)能(neng)用(yong)“S",帶止回功(gong)(gong)能(neng)用(yong)“Z",快(kuai)速(su)緊急切斷(duan)帶手(shou)動(dong)復位用(yong)"Q"
10、電(dian)(dian)源(yuan)電(dian)(dian)壓代(dai)號---直流(liu)電(dian)(dian)源(yuan)24V用“D",交流(liu)電(dian)(dian)源(yuan)220V用“A"其他(ta)電(dian)(dian)源(yuan)用“V"
DGMR-5-A1-FW-B1-FW-30
DGMX2-3-PP-CH-B-40
DGMX2-3-PP-CW-B-40
DGMX2-3-PP-FW-B-40
DGMX2-3-PP-FW-B-40
DGMX2-5-PA-FW-B-30
DGMX2-5-PP-BH-B-30
DGMX2-5-PP-BW-B-30
DGMX2-5-PP-FH-B-30J
DGMX2-5-PP-FW-B-30
DGMX2-5-PP-GW-E-B-30
DGMR-5-B1-FW-30
DGMRC-5-Y-AA-BH-11
DGMRC-5-Y-AA-BH-11
DGMX1-3-PPBW-20-JA-S5
DGMX1-3-PP-BW-B-40-EN13