良工焊接止回閥介紹：

H61Y焊(han)接式電站止回(hui)閥適用于公稱壓力(li)PW20.0~32.0npa，工(gong)作溫度<540℃(其中P(57)170V工(gong)作溫度為(wei)570℃)的石油、化工(gong)、水(shui)力(li)、火(huo)力(li)電站等各種工(gong)況的管路上，切斷或接通介質。適用介質為(wei):水(shui)、油品、蒸汽(qi)等。

焊接(jie)止回閥(fa)一般(ban)分(fen)為升(sheng)降式(shi)、旋啟(qi)式(shi)等幾種類型(xing)。 

升(sheng)(sheng)降(jiang)(jiang)式(shi)止回(hui)閥(fa)的(de)結構一般(ban)與截止閥(fa)相似(si)，其閥(fa)瓣沿(yan)著通(tong)道中心線作升(sheng)(sheng)降(jiang)(jiang)運動，動作可(ke)靠，但流(liu)體阻力較大，適用(yong)于(yu)較小口徑的(de)場合(he)。升(sheng)(sheng)降(jiang)(jiang)式(shi)止回(hui)閥(fa)可(ke)分(fen)為直通(tong)式(shi)和(he)立式(shi)兩種(zhong)。直通(tong)式(shi)升(sheng)(sheng)降(jiang)(jiang)式(shi)止回(hui)閥(fa)一般(ban)只能安裝(zhuang)(zhuang)在水平管路(lu)，而立式(shi)升(sheng)(sheng)降(jiang)(jiang)止回(hui)閥(fa)一般(ban)應安裝(zhuang)(zhuang)在垂直管路(lu)。 

旋啟(qi)(qi)(qi)式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)的(de)閥(fa)(fa)瓣(ban)(ban)(ban)繞轉軸作旋轉運動。其(qi)流體阻力(li)一般小(xiao)(xiao)于升降式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)，它適用(yong)(yong)(yong)于較(jiao)大(da)(da)口(kou)(kou)徑(jing)的(de)場(chang)合。旋啟(qi)(qi)(qi)式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)根據閥(fa)(fa)瓣(ban)(ban)(ban)的(de)數目可分為(wei)單(dan)瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)、雙瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)及多(duo)瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)三種。單(dan)瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)一般適用(yong)(yong)(yong)于中等口(kou)(kou)徑(jing)的(de)場(chang)合。大(da)(da)口(kou)(kou)徑(jing)管路(lu)(lu)選(xuan)用(yong)(yong)(yong)單(dan)瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)時，為(wei)減少水錘(chui)壓力(li)，最好采用(yong)(yong)(yong)能減小(xiao)(xiao)水錘(chui)壓力(li)的(de)緩(huan)閉止(zhi)回(hui)閥(fa)(fa)。雙瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)適用(yong)(yong)(yong)于大(da)(da)中口(kou)(kou)徑(jing)管路(lu)(lu)。對夾雙瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)結構(gou)小(xiao)(xiao)、重量輕，是一種發展較(jiao)快(kuai)的(de)止(zhi)回(hui)閥(fa)(fa)；多(duo)瓣(ban)(ban)(ban)旋啟(qi)(qi)(qi)式(shi)(shi)止(zhi)回(hui)閥(fa)(fa)適用(yong)(yong)(yong)于大(da)(da)口(kou)(kou)徑(jing)管道路(lu)(lu)。

良工(gong)焊接止回閥性能參(can)數：