美(mei)國MAC電(dian)磁(ci)閥選(xuan)型|35A-ACA-DEFJ-1JJ

美(mei)國MAC電(dian)磁(ci)閥選(xuan)型|35A-ACA-DEFJ-1JJ

美(mei)國MAC電(dian)磁(ci)閥選(xuan)型首先(xian)應(ying)該(gai)依次(ci)遵(zun)循安全(quan)性(xing)，可(ke)靠(kao)性(xing)，適(shi)用性(xing)，經(jing)濟性(xing)四(si)大(da)原(yuan)則(ze)，其次(ci)是(shi)根(gen)據六(liu)個方(fang)面(mian)的現場(chang)工況(kuang)(即(ji)管(guan)道(dao)參數、流(liu)體(ti)參數、壓(ya)力(li)參數、電(dian)氣(qi)參數、動作(zuo)方式、特(te)殊要(yao)求進(jin)行選擇)。選(xuan)型(xing)依據(ju)： 

壹(yi)、根(gen)據(ju)管(guan)道(dao)參數選(xuan)擇(ze)美(mei)國MAC電(dian)磁(ci)閥的：通(tong)徑(jing)規格(即(ji)DN)、接口方(fang)式 

       1、按照(zhao)現(xian)場(chang)管(guan)道(dao)內徑(jing)尺(chi)寸(cun)或流(liu)量(liang)要(yao)求來確定通(tong)徑(jing)(DN)尺(chi)寸(cun)。 

       2、接口方(fang)式，壹般>DN50要(yao)選擇(ze)法(fa)蘭接口，≤DN50則(ze)可(ke)根(gen)據(ju)用戶(hu)需(xu)要(yao)自由選擇。 

二(er)、根據(ju)流(liu)體(ti)參數選(xuan)擇(ze)美(mei)國MAC電(dian)磁(ci)閥的：材質(zhi)、溫度(du)組 

       1、腐(fu)蝕性(xing)流(liu)體(ti)：宜選用耐(nai)腐蝕電(dian)磁(ci)閥和全(quan)不(bu)銹(xiu)鋼(gang)；食(shi)用超(chao)凈流(liu)體(ti)：宜選用食(shi)品(pin)級不(bu)銹(xiu)鋼(gang)材質電(dian)磁(ci)閥。 

       2、高溫流(liu)體(ti)：要(yao)選擇(ze)采(cai)用耐(nai)高溫的電(dian)工材料(liao)和密(mi)封(feng)材料(liao)制(zhi)造(zao)的電(dian)磁(ci)閥，而(er)且要(yao)選擇(ze)活(huo)塞(sai)式結構(gou)類型(xing)的。 

       3、流(liu)體(ti)狀態：大(da)至(zhi)有(you)氣態(tai)，液(ye)態或混(hun)合(he)狀態，特(te)別是(shi)口(kou)徑(jing)大(da)於DN25。 

       4、流(liu)體(ti)粘度(du)：通(tong)常在50cSt以(yi)下可(ke)任(ren)意選(xuan)擇(ze)，若(ruo)超(chao)過(guo)此(ci)值(zhi)，則(ze)要(yao)選用高粘度(du)電(dian)磁(ci)閥。 

三(san)、根(gen)據壓力(li)參數選(xuan)擇(ze)美(mei)國MAC電(dian)磁(ci)閥的：原理和結(jie)構(gou)品種(zhong) 

       1、公稱(cheng)壓(ya)力(li)：這(zhe)個參數與其它通(tong)用閥門的含(han)義是(shi)壹(yi)樣的，是(shi)根(gen)據管(guan)道(dao)公稱(cheng)壓(ya)力(li)來定。 

       2、工作(zuo)壓力(li)：如果工作(zuo)壓力(li)低(di)則(ze)必須(xu)選用直(zhi)動或分(fen)步(bu)直動式原理；工作(zuo)壓差在0.04Mpa以(yi)上時(shi)直動式、分步(bu)直(zhi)動式、先(xian)導(dao)式均(jun)可(ke)選(xuan)用。 

四(si)、電(dian)氣(qi)選(xuan)擇：電(dian)壓(ya)規格應(ying)盡量(liang)優先(xian)選(xuan)用AC220V、DC24較(jiao)為方(fang)便(bian)。 

五(wu)、根據(ju)持續(xu)工作(zuo)時(shi)間(jian)長(chang)短來選(xuan)擇(ze)：常閉、常開(kai)、或可(ke)持續(xu)通(tong)電(dian) 

       1、當美(mei)國MAC電(dian)磁(ci)閥需(xu)要(yao)長(chang)時(shi)間(jian)開(kai)啟，並且持續(xu)的時(shi)間(jian)多(duo)余關閉的時(shi)間(jian)應(ying)選(xuan)用常開(kai)型。

       2、要(yao)是(shi)開(kai)啟的時(shi)間(jian)短或開(kai)和關的時(shi)間(jian)不(bu)多(duo)時(shi)，則(ze)選常閉型(xing)。 

       3、但是(shi)有(you)些用於安全(quan)保(bao)護的工況(kuang)，如爐(lu)、窯火焰監測，則(ze)不能選常開(kai)的，應(ying)選(xuan)可(ke)長(chang)期(qi)通(tong)電(dian)型(xing)。 

六(liu)、根據(ju)環境(jing)要(yao)求選(xuan)擇(ze)輔(fu)助功能：防(fang)爆、止(zhi)回(hui)、手(shou)動、防(fang)水(shui)霧、水(shui)淋、潛水(shui) 

       1、爆炸(zha)性(xing)環境(jing)：必(bi)須選(xuan)用相應(ying)防(fang)爆等級的電(dian)磁(ci)閥。 

       2、當管(guan)內流(liu)體(ti)有(you)倒(dao)流(liu)現(xian)象時(shi)，可(ke)選(xuan)擇(ze)帶(dai)止(zhi)回(hui)功能電(dian)磁(ci)閥。 

       3、當需要(yao)對電(dian)磁(ci)閥進(jin)行現場(chang)人工操(cao)作(zuo)時(shi)，可(ke)選(xuan)擇(ze)帶(dai)手(shou)動功能電(dian)磁(ci)閥。 

       4、露(lu)天(tian)安(an)裝(zhuang)或粉(fen)塵(chen)多(duo)場(chang)合應(ying)選(xuan)用防(fang)水(shui)，防(fang)塵品種(zhong)(防(fang)護等級在IP54以(yi)上)。 

       5、用於噴泉(quan)必(bi)須采用潛水(shui)型電(dian)磁(ci)閥(防(fang)護等級在IP68以(yi)上)。

美(mei)國MAC電(dian)磁(ci)閥選(xuan)型|35A-ACA-DEFJ-1JJ

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