良工焊接止回閥介紹：

H61Y焊接式電站止(zhi)回(hui)閥適(shi)用于公稱(cheng)壓力(li)(li)PW20.0~32.0npa，工(gong)作(zuo)溫度<540℃(其中P(57)170V工(gong)作(zuo)溫度為570℃)的石油、化工(gong)、水(shui)力(li)(li)、火(huo)力(li)(li)電站等(deng)各種工(gong)況(kuang)的管路上，切斷或接通介質。適(shi)用介質為:水(shui)、油品、蒸汽等(deng)。

焊(han)接止回閥(fa)一(yi)般分為升降式、旋(xuan)啟(qi)式等幾種(zhong)類(lei)型。 

升(sheng)降(jiang)(jiang)式(shi)(shi)(shi)止(zhi)回(hui)閥(fa)的結構一(yi)般(ban)(ban)與截止(zhi)閥(fa)相似，其閥(fa)瓣(ban)沿著通道(dao)中心線作(zuo)升(sheng)降(jiang)(jiang)運動(dong)，動(dong)作(zuo)可靠，但流體阻(zu)力較(jiao)大，適用(yong)于較(jiao)小(xiao)口徑的場(chang)合。升(sheng)降(jiang)(jiang)式(shi)(shi)(shi)止(zhi)回(hui)閥(fa)可分為直(zhi)通式(shi)(shi)(shi)和立式(shi)(shi)(shi)兩種(zhong)。直(zhi)通式(shi)(shi)(shi)升(sheng)降(jiang)(jiang)式(shi)(shi)(shi)止(zhi)回(hui)閥(fa)一(yi)般(ban)(ban)只能安(an)裝在水平管路，而立式(shi)(shi)(shi)升(sheng)降(jiang)(jiang)止(zhi)回(hui)閥(fa)一(yi)般(ban)(ban)應安(an)裝在垂直(zhi)管路。 

旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)的閥(fa)(fa)(fa)瓣(ban)(ban)(ban)(ban)繞(rao)轉軸(zhou)作旋(xuan)(xuan)(xuan)轉運動。其流體(ti)阻力(li)一般(ban)小(xiao)于(yu)(yu)升(sheng)降式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)，它適(shi)用(yong)(yong)(yong)于(yu)(yu)較大(da)口(kou)(kou)徑的場(chang)合(he)。旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)根據閥(fa)(fa)(fa)瓣(ban)(ban)(ban)(ban)的數目(mu)可(ke)分為單(dan)瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)、雙瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)及(ji)多(duo)(duo)瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)三種(zhong)。單(dan)瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)一般(ban)適(shi)用(yong)(yong)(yong)于(yu)(yu)中(zhong)等(deng)口(kou)(kou)徑的場(chang)合(he)。大(da)口(kou)(kou)徑管(guan)路選用(yong)(yong)(yong)單(dan)瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)時，為減少水(shui)錘壓力(li)，最(zui)好采用(yong)(yong)(yong)能減小(xiao)水(shui)錘壓力(li)的緩閉止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)。雙瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)適(shi)用(yong)(yong)(yong)于(yu)(yu)大(da)中(zhong)口(kou)(kou)徑管(guan)路。對夾雙瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)結構小(xiao)、重量輕(qing)，是一種(zhong)發展較快的止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)；多(duo)(duo)瓣(ban)(ban)(ban)(ban)旋(xuan)(xuan)(xuan)啟(qi)(qi)式(shi)(shi)(shi)(shi)(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)適(shi)用(yong)(yong)(yong)于(yu)(yu)大(da)口(kou)(kou)徑管(guan)道路。

良工焊接止(zhi)回(hui)閥性能參數：