新聞動(dòng)態(tài)
產(chǎn)品推薦
閥門是在流體系統(tǒng)中,用來(lái)控制流體的方向、壓力、流量的裝置。閥門是使配管和設(shè)備內(nèi)的介質(zhì)(液體、氣體、粉末)流動(dòng)或停止并能控制其流量的裝置。
閥門是管路流體輸送系統(tǒng)中控制部件,它是用來(lái)改變通路斷面和介質(zhì)流動(dòng)方向,具有導(dǎo)流、截止、節(jié)流、止回、分流或溢流卸壓等功能。 用于流體控制的閥門,從簡(jiǎn)單的截止閥到極為復(fù)雜的自控系統(tǒng)中所用的各種閥門,其品種和規(guī)格繁多, 閥門的公稱通徑從極微小的儀表閥大至通徑達(dá)10m的工業(yè)管路用閥。閥門可用于控制水、蒸汽、油品、氣體、泥漿、各種腐蝕性介質(zhì)、 液態(tài)金屬和放射性流體等各種類型流體的流動(dòng) ,閥門的工作壓力可從0.0013MPa到1000MPa 的超高壓,工作溫度從-269℃的超低溫到1430℃的高溫。閥門的控制可采用多種傳動(dòng)方式, 如手動(dòng)、電動(dòng)、液動(dòng)、氣動(dòng)、渦輪、電磁動(dòng)、電磁液動(dòng)、電液動(dòng)、氣液動(dòng)、正齒輪、傘齒輪驅(qū)動(dòng)等;可以在壓力、溫度或其它形式傳感信號(hào)的作用下, 按預(yù)定的要求動(dòng)作,放料閥或者不依賴傳感信號(hào)而進(jìn)行簡(jiǎn)單的開啟或關(guān)閉,電磁閥閥門依靠驅(qū)動(dòng)或自動(dòng)機(jī)構(gòu)使啟閉件作升降、滑移、旋擺或回轉(zhuǎn)運(yùn)動(dòng), 從而改變其流道面積的大小以實(shí)現(xiàn)其控制功能。
閥門的材質(zhì)選擇跟閥門使用的介質(zhì)有直接的關(guān)系,下表將詳細(xì)介紹閥門在各種液體介質(zhì)中的材質(zhì)選用對(duì)照 。
本閥門材質(zhì)選用表是用來(lái)大致指出與某種流體介質(zhì)接觸而發(fā)生反應(yīng)時(shí),應(yīng)如何選擇適當(dāng)?shù)牟牧?。表中的推薦不是絕對(duì)的,因?yàn)樘间?鑄鐵,不銹鋼,青銅,蒙乃爾合金,哈氏合金,鈦,鈷鉻合金,沉淀鋼等閥門材料的耐腐蝕性與流體的濃度、溫度、壓力和雜質(zhì)等因素有關(guān)。因此,必須強(qiáng)調(diào)本表只能作為一個(gè)導(dǎo)則參考。
符號(hào):
A - 能夠或正被成功應(yīng)用
B - 應(yīng)用過(guò)程應(yīng)注意
C - 不能應(yīng)用
LL - 缺乏資料
流體介質(zhì)
|
閥門材料
|
|||||||||||||
碳鋼
|
鑄鐵
|
302
或 304 不 銹 鋼 |
316
不 銹 鋼 |
青銅
|
蒙
乃 爾 合 金 |
哈
氏 合 金 B |
哈
氏 合 金 C |
不
銹 鋼 ﹟ 20 |
鈦
|
鈷
鉻 合 金 ﹟6 |
416
不 銹 鋼 |
440C
不 銹 鋼 |
17-4
PH 不 銹 鋼 |
|
乙醛
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
LL
|
LL
|
A
|
A
|
A
|
醋酸(無(wú)氣的)
|
C
|
C
|
B
|
B
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
C
|
C
|
B
|
醋酸(充氣的)
|
C
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
C
|
C
|
B
|
醋酸蒸氣
|
C
|
C
|
A
|
A
|
B
|
B
|
LL
|
A
|
B
|
A
|
A
|
C
|
C
|
B
|
丙酮
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
乙炔
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
A
|
乙醇
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
硫酸鋁
|
C
|
C
|
A
|
A
|
B
|
B
|
A
|
A
|
A
|
A
|
LL
|
C
|
C
|
LL
|
氨
|
A
|
A
|
A
|
A
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
氯化銨
|
C
|
C
|
B
|
B
|
B
|
B
|
A
|
A
|
A
|
A
|
B
|
C
|
C
|
LL
|
硝酸銨
|
A
|
C
|
A
|
A
|
C
|
C
|
A
|
A
|
A
|
A
|
A
|
C
|
B
|
LL
|
磷酸銨
|
C
|
C
|
A
|
A
|
B
|
B
|
A
|
A
|
B
|
A
|
A
|
B
|
B
|
LL
|
硫酸銨
|
C
|
C
|
B
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
C
|
C
|
LL
|
亞硫酸銨
|
C
|
C
|
A
|
A
|
C
|
C
|
LL
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
苯胺
|
C
|
C
|
A
|
A
|
C
|
B
|
A
|
A
|
A
|
A
|
A
|
C
|
C
|
LL
|
瀝青
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
A
|
啤酒
|
B
|
B
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
A
|
苯
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
苯甲酸
|
C
|
C
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
硼酸
|
C
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
丁烷
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
A
|
氯化鈣(堿的)
|
B
|
B
|
C
|
B
|
C
|
A
|
A
|
A
|
A
|
A
|
LL
|
C
|
C
|
LL
|
次氯酸鈣
|
C
|
C
|
B
|
B
|
B
|
B
|
C
|
A
|
A
|
A
|
LL
|
C
|
C
|
LL
|
石碳酸
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
LL
|
LL
|
二氧化碳(干的)
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
二氧化碳(濕的)
|
C
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
二硫化碳
|
A
|
A
|
A
|
A
|
C
|
B
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
四氯化碳
|
B
|
B
|
B
|
B
|
A
|
A
|
B
|
A
|
A
|
A
|
LL
|
C
|
A
|
LL
|
碳酸
|
C
|
C
|
B
|
B
|
B
|
A
|
A
|
A
|
A
|
LL
|
LL
|
A
|
A
|
A
|
氯,氣體(干的)
|
A
|
A
|
B
|
B
|
B
|
A
|
A
|
A
|
A
|
C
|
B
|
C
|
C
|
C
|
氯,氣體(濕的)
|
C
|
C
|
C
|
C
|
C
|
C
|
C
|
B
|
C
|
A
|
B
|
C
|
C
|
C
|
液氯
|
C
|
C
|
C
|
C
|
B
|
C
|
C
|
A
|
B
|
C
|
B
|
C
|
C
|
C
|
鉻酸
|
C
|
C
|
C
|
B
|
C
|
A
|
C
|
A
|
C
|
A
|
B
|
C
|
C
|
C
|
檸檬酸
|
LL
|
C
|
B
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
LL
|
B
|
B
|
B
|
焦?fàn)t氣
|
A
|
A
|
A
|
A
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
硫酸銅
|
C
|
C
|
B
|
B
|
B
|
C
|
LL
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
棉子油
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
雜酚油
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
A
|
乙烷
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
乙醚
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
氯乙烷
|
C
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
乙烯
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
乙二醇
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
LL
|
A
|
LL
|
A
|
A
|
A
|
A
|
氯化鐵
|
C
|
C
|
C
|
C
|
C
|
C
|
C
|
B
|
C
|
A
|
B
|
C
|
C
|
LL
|
甲醛
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
甲酸
|
LL
|
C
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
C
|
B
|
C
|
C
|
B
|
氟里昂(濕的)
|
B
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
LL
|
LL
|
氟里昂(干的)
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
LL
|
LL
|
糖醛
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
汽油(精制的)
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
葡萄糖
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
鹽酸(充氣的)
|
C
|
C
|
C
|
C
|
C
|
C
|
A
|
B
|
C
|
C
|
B
|
C
|
C
|
C
|
鹽酸(無(wú)氣的)
|
C
|
C
|
C
|
C
|
C
|
C
|
A
|
B
|
C
|
C
|
B
|
C
|
C
|
C
|
氫氟酸(充氣的)
|
B
|
C
|
C
|
B
|
C
|
C
|
A
|
A
|
B
|
C
|
B
|
C
|
C
|
C
|
氫氟酸(無(wú)氣的)
|
A
|
C
|
C
|
B
|
C
|
A
|
A
|
A
|
B
|
C
|
LL
|
C
|
C
|
LL
|
氫
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
過(guò)氧化氫
|
LL
|
A
|
A
|
A
|
C
|
A
|
B
|
B
|
A
|
A
|
LL
|
B
|
B
|
LL
|
硫化氫(液體)
|
C
|
C
|
A
|
A
|
C
|
C
|
A
|
A
|
B
|
A
|
A
|
C
|
C
|
LL
|
氫氧化鎂
|
A
|
A
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
汞
|
A
|
A
|
A
|
A
|
C
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
甲醇
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
A
|
甲乙酮
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
A
|
牛奶
|
C
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
C
|
C
|
C
|
天然氣
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
硝酸
|
C
|
C
|
A
|
B
|
C
|
C
|
C
|
B
|
A
|
A
|
C
|
C
|
C
|
B
|
油酸
|
C
|
C
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
LL
|
草酸
|
C
|
C
|
B
|
B
|
B
|
B
|
A
|
A
|
A
|
B
|
B
|
B
|
B
|
LL
|
氧
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
石油(精制的)
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
磷酸(充氣的)
|
C
|
C
|
A
|
A
|
C
|
C
|
A
|
A
|
A
|
B
|
A
|
C
|
C
|
LL
|
磷酸(無(wú)氣的)
|
C
|
C
|
A
|
A
|
C
|
B
|
A
|
A
|
A
|
B
|
A
|
C
|
C
|
LL
|
磷酸蒸氣
|
C
|
C
|
B
|
B
|
C
|
C
|
A
|
LL
|
A
|
B
|
C
|
C
|
C
|
LL
|
苦味酸
|
C
|
C
|
A
|
A
|
C
|
C
|
A
|
A
|
A
|
LL
|
LL
|
B
|
B
|
LL
|
氯化鉀
|
B
|
B
|
A
|
A
|
B
|
B
|
A
|
A
|
A
|
A
|
LL
|
C
|
C
|
LL
|
氫氧化鉀
|
B
|
B
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
LL
|
B
|
B
|
LL
|
丙烷
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
松香
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
A
|
A
|
A
|
A
|
硝酸銀
|
C
|
C
|
A
|
A
|
C
|
C
|
A
|
A
|
A
|
A
|
B
|
B
|
B
|
LL
|
醋酸鈉
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
碳酸鈉
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
A
|
氯化鈉
|
C
|
C
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
B
|
鉻酸鈉
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
氫氧化鈉
|
A
|
A
|
A
|
A
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
A
|
次氯酸鈉
|
C
|
C
|
C
|
C
|
B-C
|
B-C
|
C
|
A
|
B
|
A
|
LL
|
C
|
C
|
LL
|
硫代硫酸鈉
|
C
|
C
|
A
|
A
|
C
|
C
|
A
|
A
|
A
|
A
|
LL
|
B
|
B
|
LL
|
氯化亞錫
|
B
|
B
|
C
|
A
|
C
|
B
|
A
|
A
|
A
|
A
|
LL
|
C
|
C
|
LL
|
硬脂酸
|
A
|
C
|
A
|
A
|
B
|
B
|
A
|
A
|
A
|
A
|
B
|
B
|
B
|
LL
|
硫酸鹽溶液(黑的)
|
A
|
A
|
A
|
A
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
LL
|
LL
|
LL
|
硫
|
A
|
A
|
A
|
A
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
二氧化硫(干的)
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
三氧化碳(干的)
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
硫酸(充氣的)
|
C
|
C
|
C
|
C
|
C
|
C
|
A
|
A
|
A
|
B
|
B
|
C
|
C
|
C
|
硫酸(無(wú)氣的)
|
C
|
C
|
C
|
C
|
B
|
B
|
A
|
A
|
A
|
B
|
B
|
C
|
C
|
C
|
亞硫酸
|
C
|
C
|
B
|
B
|
B
|
C
|
A
|
A
|
A
|
A
|
B
|
C
|
C
|
LL
|
焦油
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
三氯乙烯
|
B
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
松節(jié)油
|
B
|
B
|
A
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
醋
|
C
|
C
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
LL
|
A
|
C
|
C
|
A
|
水(鍋爐給水)
|
B
|
C
|
A
|
A
|
C
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
A
|
A
|
水(蒸餾的)
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
海水
|
B
|
B
|
B
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
A
|
C
|
C
|
A
|
威士忌酒和葡萄酒
|
C
|
C
|
A
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
C
|
C
|
LL
|
氯化鋅
|
C
|
C
|
C
|
C
|
C
|
C
|
A
|
A
|
A
|
A
|
B
|
C
|
C
|
LL
|
硫酸鋅
|
C
|
C
|
A
|
A
|
B
|
A
|
A
|
A
|
A
|
A
|
A
|
B
|
B
|
LL
|
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