型號規格H41W
公稱通徑15~200mm
壓力范圍1.0~2.5MPa
適用介(jie)質(zhi)(zhi)醋酸等(deng)腐蝕性介(jie)質(zhi)(zhi)、 氧化性腐蝕介(jie)質(zhi)(zhi)

黃(huang)銅升(sheng)(sheng)降式止(zhi)(zhi)(zhi)回(hui)閥(fa)(fa)是(shi)指(zhi)依靠(kao)介質(zhi)本身流(liu)動(dong)(dong)而自動(dong)(dong)開、閉(bi)閥(fa)(fa)瓣，用來防止(zhi)(zhi)(zhi)介質(zhi)倒(dao)流(liu)的(de)(de)閥(fa)(fa)門(men)，又稱逆(ni)止(zhi)(zhi)(zhi)閥(fa)(fa)、單(dan)向(xiang)閥(fa)(fa)、逆(ni)流(liu)閥(fa)(fa)和背(bei)壓(ya)(ya)閥(fa)(fa)。黃(huang)銅升(sheng)(sheng)降式止(zhi)(zhi)(zhi)回(hui)閥(fa)(fa)屬于(yu)(yu)一種自動(dong)(dong)閥(fa)(fa)門(men)，其(qi)主(zhu)要作用是(shi)防止(zhi)(zhi)(zhi)介質(zhi)倒(dao)流(liu)、防止(zhi)(zhi)(zhi)泵及(ji)驅(qu)動(dong)(dong)電動(dong)(dong)機反(fan)轉，以及(ji)容器介質(zhi)的(de)(de)泄放。止(zhi)(zhi)(zhi)回(hui)閥(fa)(fa)還可(ke)用于(yu)(yu)給其(qi)中的(de)(de)壓(ya)(ya)力(li)可(ke)能(neng)升(sheng)(sheng)至超過系(xi)統(tong)(tong)壓(ya)(ya)的(de)(de)輔助系(xi)統(tong)(tong)提供補給的(de)(de)管(guan)路上。止(zhi)(zhi)(zhi)回(hui)閥(fa)(fa)主(zhu)要可(ke)分為旋啟式止(zhi)(zhi)(zhi)回(hui)閥(fa)(fa)（依重(zhong)心旋轉）與升(sheng)(sheng)降式止(zhi)(zhi)(zhi)回(hui)閥(fa)(fa)（沿軸(zhou)線(xian)移動(dong)(dong)）。

止回(hui)閥(fa)：按結構劃分(fen)，可(ke)分(fen)為(wei)升(sheng)降(jiang)式(shi)止回(hui)閥(fa)、旋(xuan)啟(qi)式(shi)止回(hui)閥(fa)和(he)(he)蝶式(shi)止回(hui)閥(fa)三種(zhong)。升(sheng)降(jiang)式(shi)止回(hui)閥(fa)可(ke)分(fen)為(wei)立式(shi)和(he)(he)直通式(shi)兩種(zhong)。旋(xuan)啟(qi)式(shi)止回(hui)閥(fa)分(fen)為(wei)單(dan)瓣(ban)(ban)(ban)式(shi)、雙瓣(ban)(ban)(ban)式(shi)和(he)(he)多瓣(ban)(ban)(ban)式(shi)三種(zhong)。蝶式(shi)止回(hui)閥(fa)為(wei)蝶式(shi)雙瓣(ban)(ban)(ban)、蝶式(shi)單(dan)瓣(ban)(ban)(ban)、以上幾(ji)種(zhong)止回(hui)閥(fa)在(zai)連接(jie)(jie)形式(shi)上可(ke)分(fen)為(wei)螺(luo)紋連接(jie)(jie)、法(fa)蘭連接(jie)(jie)、焊接(jie)(jie)和(he)(he)對夾式(shi)連接(jie)(jie)四種(zhong)。