一、产品简介document.write('')document.write('')document.write('')document.write('')微阻球形止回阀document.write('')document.write(''),采用橡胶***球为阀瓣,在介质的作用下,可在阀替内的滑道上滚动,从而打开或关闭阀门.流量大流阻损失小,密封性能好,消声关闭,可减小水击波.水平或垂直安装均可.微阻球形止回阀可用于冷水、热水、工业及生活污水等管网的水泵出口，防止介质倒流。二、document.write('')document.write('')主要技术参数公称压力：1.0～1.6MPa公称通经：50～1000mm适用介质：水及弱腐蚀性流体适用温度：0～80℃法兰标准：GB/T17241.6GB/T9113试验标准:GB/T13927AP1598三、document.write('')document.write('')主要零部件材料零件名称阀体阀瓣阀座弹簧材料铸铁、球铁、铸钢铸铜、不锈钢铜、不锈钢不锈钢四、document.write('')document.write('')主要外形连接尺寸单位：mmDN（mm）5065801001251502002503003504004505006007008009001000L20321624129233035649562269878191497897812951448160017601900H180210225245280320380450470500H151057064071581582598011551260135016601700document.documentElement.clientHeight){////有滚动条//x.style.height=buttom.offsetTop+buttom.offsetHeight;//}//else{x.style.height=document.documentElement.clientHeight;//}a.appendChild(x);varc=document.createElement('div');c.style.position=absolute;c.style.filter=alpha(opacity=50);c.style.backgroundColor=#000;c.style.width=100%;//alert(document.documentElement.clientHeight);c.style.height=x.style.height;//varb=document.createElement('div');b.style.textAlign=center;b.style.position=absolute;b.style.width=95%;if(pos==d){b.style.top=order.offsetTop+order.offsetHeight;}else{b.style.top=(document.documentElement.clientHeight-200)/2;}varhtml=''+''+''+''+'正在处理'+''+//''+//''+''+'正在发送邮件，请稍候...'+''+''+''+''+''+'';x.appendChild(c);x.appendChild(b);b.innerHTML=html;}functionfCloseSaveInfo(){_gelstn('body')[0].removeChild($$(SaveWin));}functionfSaveP2VDo(p){fPopSaveWin(d);};functionGetVnum(){varMyNum=newActiveXObject(Microsoft.XMLHTTP);MyNum.open(POST,XmlhttpImage.aspx,false);MyNum.send(null);returnMyNum.responseText;}-->)