偏(pian)心(xin)大(dai)小(xiao)頭(tou)是(shi)管(guan)道(dao)變(bian)徑(jing)配(pei)件(jian)之(zhi)一(yi)，在(zai)管(guan)道(dao)施(shi)工(gong)中(zhong)用(yong)於(yu)兩(liang)種(zhong)不(bu)同(tong)管(guan)徑(jing)的(di)連(lian)接(jie)，廣(guang)泛(fan)應(ying)用(yong)於(yu)各(ge)類(lei)流(liu)體(ti)輸(shu)送(song)係(ji)統(tong)中(zhong)。偏(pian)心(xin)大(dai)小(xiao)頭(tou)兩(liang)端(duan)管(guan)口(kou)直(zhi)徑(jing)不(bu)同(tong)，能(neng)夠(gou)無(wu)縫(feng)連(lian)接(jie)不(bu)同(tong)口(kou)徑(jing)的(di)管(guan)道(dao)實(shi)現(xian)管(guan)道(dao)變(bian)徑(jing)，同(tong)時(shi)優(you)化(hua)流(liu)體(ti)流(liu)動(dong)狀(zhuang)態(tai)。由(you)於(yu)其(qi)偏(pian)心(xin)設(she)計(ji)能(neng)有(you)效(xiao)避(bi)免(wen)空(kong)氣(qi)積(ji)聚(ju)和(hu)液(ye)體(ti)滯(zhi)留(liu)，特(te)別(bie)適(kuo)用(yong)於(yu)泵(beng)入(ru)口(kou)和(hu)水(shui)平(ping)管(guan)道(dao)，防(fang)止(zhi)氣(qi)蝕(shi)現(xian)象(xiang)。偏(pian)心(xin)設(she)計(ji)減(jian)少(shao)了(liao)流(liu)體(ti)在(zai)變(bian)徑(jing)處(chu)的(di)湍(tuan)流(liu)和(hu)壓(ya)力(li)損(sun)失(shi)，提(ti)高(gao)輸(shu)送(song)效(xiao)率(shuai)，偏(pian)心(xin)結(jie)構(gou)使(shi)其(qi)在(zai)貼(tie)牆(qiang)或(huo)貼(tie)地(de)安(an)裝(zhuang)時(shi)占(zhan)用(yong)空(kong)間(jian)更(geng)小(xiao)，便(pian)於(yu)管(guan)線(xian)布(bu)局(ju)。偏(pian)心(xin)大(dai)小(xiao)頭(tou)以(yi)其(qi)獨(du)特(te)的(di)結(jie)構(gou)和(hu)優(you)異(yi)的(di)性(xing)能(neng)，成(cheng)為(wei)流(liu)體(ti)管(guan)道(dao)係(ji)統(tong)中(zhong)不(bu)可(ke)或(huo)缺(que)的(di)組(zu)件(jian)，有(you)效(xiao)提(ti)升(sheng)了(liao)係(ji)統(tong)的(di)可(ke)靠(kao)性(xing)和(hu)運(yun)行(hang)效(xiao)率(shuai)。偏(pian)心(xin)大(dai)小(xiao)頭(tou)主(zhu)要(yao)應(ying)用(yong)在(zai)石(dan)油(you)、化(hua)工(gong)、蒸(zheng)汽(qi)管(guan)網(wang)、汙(wu)水(shui)管(guan)道(dao)等(deng)基(ji)礎(chu)工(gong)程(cheng)。