Kusankha ulusi wolakwika pa zolumikizira zanu za PVC kumabweretsa kutuluka kwa madzi kokhumudwitsa. Kutuluka kumeneku kumayambitsa kuwonongeka kwa madzi, kuchedwa kwa ntchito, ndikukukakamizani kuti mugwirenso ntchitoyo, zomwe zimakuwonongerani nthawi ndi ndalama.

NPT ndi BSPT ndi miyezo iwiri yosiyana yomwe sigwirizana. NPT ndi muyezo waku America wokhala ndi ngodya ya ulusi wa 60°. BSPT ndi muyezo waku Britain wokhala ndi ngodya ya ulusi wa 55°. Muyenera kufananiza mtundu wa ulusi ndi chitoliro chanu.

Iyi ndi nkhani yomwe ndimakambirana nthawi zambiri ndi mnzanga Budi ku Indonesia. Pa malonda apadziko lonse, zinthu zazing'ono mongamiyezo ya ulusikungapangitse kusiyana kwakukulu. Msika wa ku Southeast Asia nthawi zina umagwiritsa ntchito muyezo wa American ANSI, womwe umaphatikizapo NPT, makamaka pamapulojekiti enaake. Komabe, madera ambiri amakondaBSPTKumvetsetsa kusiyana kwakukulu pakati pa ziwirizi ndi gawo loyamba loyitanitsa zida zoyenera ndikuwonetsetsa kuti makasitomala anu amatha kupanga makina olimba komanso osatulutsa madzi. Tiyeni tiwone zomwe zimawasiyanitsa.

Kodi kusiyana kwenikweni pakati pa ulusi wa BSPT ndi NPT ndi kotani?

Ulusi womwe uli pa zolumikizira ziwiri umaoneka wofanana kwambiri. Kulakwitsa poganiza kuti ndi wofanana kungachotse ulusiwo ndikuwononga cholumikiziracho, zomwe zingachititse kuti chisinthidwe.

Kusiyana kwakukulu ndi ngodya ya ulusi ndi pitch. Ulusi wa NPT uli ndi ngodya ya madigiri 60, pomwe ulusi wa BSPT uli ndi ngodya ya madigiri 55. Kusiyana kochepa kumeneku kumalepheretsa kupanga chisindikizo choyenera komanso chotetezeka pamodzi.

Poyamba, simungaone kusiyana kwake. Koma ukadaulo womwe uli kumbuyo kwawo ndi wosiyana kwambiri. Izi zimadalira mfundo zazikulu ziwiri: mawonekedwe a ulusi uliwonse ndi momwe umatsekera.NPT (National Pipe Taper)muyezo umagwiritsa ntchito ulusi wokhala ndi nsonga zosalala ndi zigwa.BSPT (British Standard Pipe Taper)Ulusi uli ndi mawonekedwe ozungulira a Whitworth. Kusiyana kwakukulu ndi ngodya. Kusagwirizana kumeneku kumatanthauza kuti ngati muyesa kulumikiza NPT mu BSPT fitting, nsonga za ulusi zokha ndi zomwe zidzakhudzane. Izi zimapangitsa kuti kulumikizana kukhale kofooka komwe kumatuluka pansi pa kupanikizika ndipo kumatha kuchotsedwa mosavuta. Sikuti zapangidwa kuti zigwirizane.

NPT vs. BSPT: Kusiyana Kwakukulu kwaukadaulo

Mbali	NPT (American Standard)	BSPT (Muyezo wa ku Britain)
Ngodya ya Ulusi	Madigiri 60	Madigiri 55
Mbiri ya Ulusi	Mapiri ndi zigwa zosalala	Nsonga zozungulira ndi zigwa
Chisindikizo Choyamba	Ulusi wolumikizana pamodzi (wochepa)	Chotsekera pa ulusi
Chigawo Chonse	kumpoto kwa Amerika	Europe, Asia, Australia, Padziko Lonse

Kodi NPT kapena BSP ndi muyezo wabwino kwambiri wa ulusi?

Mukufuna kusunga zinthu zabwino kwambiri komanso zothandiza kwambiri. Kusunga zinthu molakwika pamsika wanu kungapangitse kuti zinthu zanu zisamayende bwino komanso kuti makasitomala anu asasangalale.

Palibe muyezo uliwonse umene uli "wabwino" kuposa wina; koma ndi wosiyana. Chisankho chabwino kwambiri ndi chomwe chili chokhazikika m'dera lanu ndipo chikugwirizana ndi zida zomwe makasitomala anu akugwiritsa ntchito.

Nkhaniyi ndi ya malo, osati mtundu. NPT ndiye muyezo wodziwika bwino ku United States ndi Canada. Ngati mukugwira ntchito pa pulojekiti yopangidwa ndi kampani yaku America kapena mukugwiritsa ntchito zida zaku America, mudzafunikaZopangira za NPTKoma BSP ndi muyezo womwe umagwiritsidwa ntchito m'madera ena ambiri padziko lonse lapansi, kuphatikizapo Europe, UK, Asia, Australia, ndi South Africa. Pa msika wa Budi ku Southeast Asia, ukhoza kusakanikirana. Ndikudziwa kuti mapulojekiti ambiri am'deralo ndi aku Europe adzafuna BSPT. Komabe, mapulojekiti okhala ndi ndalama kapena mainjiniya aku America nthawi zambiri amatchula miyezo ya ANSI, kutanthauza NPT. Valavu "yabwino kwambiri" ndi yomwe imakoka bwino chitoliro cha kasitomala wanu. Ichi ndichifukwa chake ndikofunikira kufunsa ndikutsimikizira muyezo womwe ukufunika pa projekiti iliyonse.

Kodi ulusi wa NPT ndi wofala pa zolumikizira za PVC?

Mukuyitanitsa ma valve a mpira wa PVC ndipo muyenera kusankha mtundu wa ulusi. Muyenera kudziwa ngati zolumikizira zapulasitiki zingapangidwe ndi ulusi wamba wachitsulo.

Inde, zolumikizira za PVC nthawi zambiri zimapangidwa ndi ulusi wa NPT ndi BSP. Izi zimathandiza kuti mapaipi apulasitiki azilumikizana mosavuta ndi mapaipi achitsulo, mapampu, ndi zida zina zodziwika bwino za mapaipi.

Ku Pntek, timapanga mitundu yambiri ya zolumikizira za PVC ndi ulusi wa NPT ndi BSP kuti tithandize ogwirizana nawo padziko lonse lapansi. Kulumikiza ulusi ndi njira yodziwika bwino yopangira kulumikizana komwe kungaphatikizidwe ndikuchotsedwa. Komabe, ndikofunikira kuganizira mphamvu ya pulasitiki. Njira yodulira ulusi imachotsa zinthuzo ndikupanga malo opsinjika. Pachifukwa ichi, nthawi zonse timalimbikitsa kugwiritsa ntchito makoma okhuthala.Ndondomeko 80 PVCchifukwa chazolumikizira zolumikizidwa, makamaka m'makina omwe ali ndi mphamvu yowonjezereka kapena mphamvu yamakina. Ngakhale mutha kulumikiza mapaipi ndi zolumikizira za Schedule 40, mphamvu yawo yogwiritsira ntchito mphamvu imachepa kwambiri. Kugwiritsa ntchito cholumikizira cha PVC chopangidwa ndi fakitale nthawi zonse kumakhala kodalirika kuposa kudula ulusi kukhala chitoliro wamba nokha.

Kodi mungathe kulumikiza ulusi wa BSPT ndi NPT pamodzi?

Muli ndi cholumikizira chachikazi cha NPT ndi chitoliro chachimuna cha BSPT m'munda. Zikuoneka kuti chingasokonezeke, ndipo mukuyesedwa kuti muchikakamize kuti chimalize ntchitoyo.

Ayi, simuyenera kulumikiza ulusi wa BSPT ndi NPT mwachindunji. Ma angles osagwirizana adzapangitsa kuti amange, aphimbe ulusi, ndikuwononga zolumikizira. Izi zimapangitsa kuti cholumikiziracho chikhale chofooka chomwe chimatsimikizika kuti chidzatuluka.

Kuyesa kukakamiza miyezo iwiriyi pamodzi ndi njira yolepheretsa. Chifukwa chakuti ma angles ndi ma pitches a ulusi ndi osiyana, sangathe kulumikizana bwino. Chomwe chimachitika ndi njira yotchedwa "kulumikiza ulusi"," pomwe pamwamba pa ulusi umodzi umadula muzu wa ulusi wina m'malo mokhala bwino. Izi zidzawononga ulusi wa mwamuna ndi mkazi kwamuyaya. Ngakhale mutagwiritsa ntchito tepi yotsekera ulusi wambiri, sizidzadzaza mipata yomwe yapangidwa ndi mawonekedwe osagwirizana. Kulumikizana kudzatuluka nthawi yomweyo dongosolo likayikidwa pansi pa kupanikizika. Njira yokhayo yolondola komanso yaukadaulo yolumikizirana ndiDongosolo la BSPT kupita ku dongosolo la NPTNdi pogwiritsa ntchito cholumikizira chapadera cha adaputala. Ma adaputala awa amapangidwa ndi ulusi woyenera wachikazi ndi wamwamuna mbali zosiyana kuti apange kusintha kotetezeka komanso kosataya madzi.

Mapeto

NPT ndi BSPT ndi miyezo yosiyana, yosagwirizana. Kusankha koyenera kumatsimikiziridwa ndi malo a polojekiti yanu ndi zomwe mukufuna. Nthawi zonse tsimikizirani muyezo wofunikira kuti muwonetsetse kuti kulumikizana kotetezeka, kodalirika, komanso kopanda kutayikira kwa zolumikizira zanu za PVC.