室內系(xi)統(tong)的(de)(de)(de)設備(bei)要求，洗臉盆、小(xiao)便斗(dou)、浴缸等(deng)可(ke)采用一 般(ban)通用潔具(ju)，根(gen)據水(shui)(shui)(shui)量的(de)(de)(de)不同，可(ke)以有多(duo)個(ge)潔具(ju)連接(jie)一個(ge)真(zhen)空(kong)(kong)(kong)控制閥(fa)(fa)；座(zuo)(zuo)便器(qi)(qi)必(bi)須由外國公(gong)司提供的(de)(de)(de)特殊(shu)真(zhen)空(kong)(kong)(kong)座(zuo)(zuo)便器(qi)(qi)，它(ta)保證了每次(ci)沖洗只要1升的(de)(de)(de)水(shui)(shui)(shui)，并將(jiang)真(zhen)空(kong)(kong)(kong)控制閥(fa)(fa)整合在(zai)座(zuo)(zuo)便器(qi)(qi)內，室內真(zhen)空(kong)(kong)(kong)排水(shui)(shui)(shui)，將(jiang)整個(ge)系(xi)統(tong)變為一種由空(kong)(kong)(kong)氣作為傳輸介(jie)質的(de)(de)(de)負(fu)壓密閉狀態之中(zhong)。城市(shi)遭(zao)遇大雨，排水(shui)(shui)(shui)系(xi)統(tong)經常癱瘓，很大原因就在(zai)于此。即便是在(zai)深達8米(mi)的(de)(de)(de)地方，75毫(hao)米(mi)直(zhi)徑內的(de)(de)(de)固體(ti)雜物、惡臭有毒的(de)(de)(de)氣體(ti)都能隨(sui)著真(zhen)空(kong)(kong)(kong)管(guan)道(dao)被吸走。真(zhen)空(kong)(kong)(kong)泵(beng)站中(zhong)的(de)(de)(de)真(zhen)空(kong)(kong)(kong)泵(beng)使(shi)管(guan)道(dao)內維持著0.6bar的(de)(de)(de)負(fu)壓，污(wu)水(shui)(shui)(shui)將(jiang)以4m/s的(de)(de)(de)速(su)度(du)通過真(zhen)空(kong)(kong)(kong)管(guan)道(dao)進入真(zhen)空(kong)(kong)(kong)泵(beng)站中(zhong)的(de)(de)(de)真(zhen)空(kong)(kong)(kong)罐。真(zhen)空(kong)(kong)(kong)排水(shui)(shui)(shui)避免(mian)了傳統(tong)的(de)(de)(de)重力向下的(de)(de)(de)排水(shui)(shui)(shui)局限性，所以管(guan)道(dao)布(bu)置具(ju)有任(ren)意性。

使用真(zhen)空的(de)原(yuan)理(li)是(shi)一種依靠氣(qi)壓差(cha)產(chan)生挾裹污(wu)水(shui)(shui)的(de)高(gao)速氣(qi)流，并(bing)把污(wu)水(shui)(shui)從器具(ju)中取走的(de)排(pai)水(shui)(shui)系統，可(ke)以(yi)簡(jian)單(dan)地解決(jue)排(pai)水(shui)(shui)沼坡，使污(wu)水(shui)(shui)可(ke)以(yi)任意地提(ti)升，沒有外溢，不會(hui)污(wu)染地下水(shui)(shui)，環保程度高(gao)。城(cheng)市遭遇大雨，排(pai)水(shui)(shui)系統經常癱瘓，很大原(yuan)因就(jiu)在于(yu)此。即便是(shi)在深達8米的(de)地方(fang)，75毫米直徑內(nei)的(de)固體雜(za)(za)物(wu)、惡臭有毒的(de)氣(qi)體都能隨著真(zhen)空管道(dao)被吸走。普遍采(cai)用的(de)重力排(pai)水(shui)(shui)系統大多只能順利通過濃度較低、雜(za)(za)質很少的(de)液體，一旦泔(gan)水(shui)(shui)、淤泥(ni)、塑料袋、碎石、磚塊等(deng)雜(za)(za)物(wu)混為一體，極易堵塞管道(dao)。

真空(kong)(kong)排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)是有(you)別(bie)于重力(li)排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)和壓(ya)力(li)排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)的一種排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)。適(shi)(shi)用(yong)于生活污(wu)(wu)、廢水(shui)(shui)(shui)(shui)排水(shui)(shui)(shui)(shui)點分(fen)散，排水(shui)(shui)(shui)(shui)距離長的場所(suo)。真空(kong)(kong)排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)管(guan)路(lu)走向(xiang)不(bu)(bu)受空(kong)(kong)間局限，可提升、下沉、轉向(xiang)、繞過障礙(ai)物(wu)，可實現(xian)污(wu)(wu)廢水(shui)(shui)(shui)(shui)的同層收(shou)集、同層排放。真空(kong)(kong)排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)應符合通過真空(kong)(kong)設備使排水(shui)(shui)(shui)(shui)管(guan)道內產生一定程(cheng)度的真空(kong)(kong)負(fu)壓(ya)，利用(yong)空(kong)(kong)氣壓(ya)差，將(jiang)真空(kong)(kong)界面(mian)單元內的污(wu)(wu)、廢水(shui)(shui)(shui)(shui)快速(su)推入排水(shui)(shui)(shui)(shui)管(guan)道的排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)。負(fu)壓(ya)排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)不(bu)(bu)像重力(li)排水(shui)(shui)(shui)(shui)系(xi)(xi)統(tong)(tong)那樣易受建筑(zhu)結(jie)構(gou)、環境(jing)、地(di)勢等條件的限制，能較靈活地(di)適(shi)(shi)用(yong)于各類(lei)建筑(zhu)、城(cheng)市與鄉村排水(shui)(shui)(shui)(shui)及(ji)工業園(yuan)區排水(shui)(shui)(shui)(shui)。