止(zhi)回(hui)(hui)(hui)閥(fa)(fa)(CheckValve)：按結(jie)構(gou)劃分,可分為(wei)升(sheng)降式(shi)(shi)(shi)止(zhi)回(hui)(hui)(hui)閥(fa)(fa)、旋啟(qi)式(shi)(shi)(shi)止(zhi)回(hui)(hui)(hui)閥(fa)(fa)和蝶式(shi)(shi)(shi)止(zhi)回(hui)(hui)(hui)閥(fa)(fa)三(san)種。升(sheng)降式(shi)(shi)(shi)止(zhi)回(hui)(hui)(hui)閥(fa)(fa)可分為(wei)立(li)式(shi)(shi)(shi)和臥式(shi)(shi)(shi)兩種。旋啟(qi)式(shi)(shi)(shi)止(zhi)回(hui)(hui)(hui)閥(fa)(fa)分為(wei)單瓣(ban)(ban)式(shi)(shi)(shi)、雙瓣(ban)(ban)式(shi)(shi)(shi)和多瓣(ban)(ban)式(shi)(shi)(shi)三(san)種。蝶式(shi)(shi)(shi)止(zhi)回(hui)(hui)(hui)閥(fa)(fa)為(wei)直通式(shi)(shi)(shi)。以上(shang)幾種止(zhi)回(hui)(hui)(hui)閥(fa)(fa)在連(lian)接(jie)形(xing)式(shi)(shi)(shi)上(shang)可分為(wei)螺紋(wen)連(lian)接(jie)、法(fa)蘭(lan)連(lian)接(jie)、焊接(jie)和對夾式(shi)(shi)(shi)連(lian)接(jie)四種。

旋啟式黃(huang)銅(tong)止(zhi)回閥(fa)H14W-16T公(gong)稱(cheng)壓力：2.0MPa工(gong)作介(jie)質(zhi)：水、海水、非(fei)腐蝕性液體(ti)、飽和蒸汽工(gong)作溫(wen)度：-20℃≤t≤180℃管(guan)(guan)螺紋符合ISO7標準青銅(tong)、黃(huang)銅(tong),啟閉(bi)件靠介(jie)質(zhi)流動(dong)(dong)和力量自(zi)行開啟或關(guan)閉(bi),以(yi)防止(zhi)介(jie)質(zhi)倒流的閥(fa)門(men)叫止(zhi)回閥(fa)。止(zhi)回閥(fa)屬(shu)于(yu)自(zi)動(dong)(dong)閥(fa)類,主要用于(yu)介(jie)質(zhi)單向流動(dong)(dong)的管(guan)(guan)道上,只允許介(jie)質(zhi)向一個方向流動(dong)(dong),以(yi)防止(zhi)發生事(shi)故。