Udinga ivalvu yomgca wemizi-mveliso okanye weekhemikhali, kodwa awuqinisekanga ukuba iplastiki ingakwazi na ukumelana noxinzelelo. Ukukhetha ivalvu engalunganga kunokukhokelela ekuvuzeni okuyingozi, ixesha lokungasebenzi elibizayo, kunye nesiganeko esikhulu sokhuseleko.

Ivalvu yebhola yePP esemgangathweni, njengeemodeli zethu zePntek, inomlinganiselo woxinzelelo lwe-PN16. Oku kuthetha ukuba inokusingatha ngokukhuselekileyo iibha ezili-16 (malunga ne-235 PSI) kubushushu begumbi. Okubaluleke kakhulu, lo mthamo uyancipha njengoko ubushushu bolwelo bunyuka.

Xa ndithetha namaqabane anjengo-Eric Lim eMalaysia, umlinganiselo woxinzelelo awungomanani nje kuphela; umalunga nokhuseleko kunye nokuthembana. Inkampani yakhe ibonelela ngeeprojekthi kulo lonke elaseMzantsi-mpuma Asia, kwaye kufuneka bazi ukuba iimveliso abazithengisayo aziyi kusilela. Umlinganiselo woxinzelelo ochazwe yivalvu yindawo yokuqala, kodwa ubuchule bokwenyani busekuqondeni indlela eziphethe ngayo phantsi kweemeko zehlabathi lokwenyani. Olu lwazi lulo olwahlula intengiselwano elula kwintsebenziswano yokwenyani, kwaye yinto esigxila kuyo ePntek.

Ingakanani inqanaba loxinzelelo lwevalvu yebhola?

Ubona amagama afana ne-CLASS 150, PN16, kunye ne-CWP kumaphepha edatha uze uzive udidekile. Oku kudideka kunokukhokelela eku-odoleni ngempazamo ivalvu engalunganga, nto leyo edala inkqubo engakhuselekanga kumthengi wakho.

Uvavanyo loxinzelelo lukuxelela ukuba uxinzelelo oluphezulu ivalvu enokuluphatha ngokukhuselekileyo kubushushu obuthile. Kusetyenziswa imigangatho eyahlukeneyo efana ne-PN (yaseYurophu), iClass (yaseMelika), kunye ne-CWP (eJikelele), ngoko ke kufuneka wazi ukuba yeyiphi inkqubo oyijongileyo.

Masiyicacise le migaqo kuba ilula kakhulu kunokuba ibonakala. Uvavanyo loxinzelelo lolona lwazi lubalulekileyo lokhuseleko kuyo nayiphi na ivalvu. Nangona kunjalo, iindawo ezahlukeneyo zehlabathi kunye namashishini ahlukeneyo asebenzisa iinkqubo ezahlukeneyo, nto leyo enokubangela ukudideka. Kwiinkqubo zeplastiki zemibhobho, uya kubona rhoqoPNukalisho. Igama elithi “PN” limeleUxinzelelo lweNqanaba, elithetha uxinzelelo oluqhelekileyo ngesiFrentshi. Libonisa uxinzelelo oluphezulu kwiibhaukuba inxalenye inokumelana nobushushu begumbi (20°C). Olunye ulinganiselo oluqhelekileyo loluI-CWP, okanye Uxinzelelo Lokusebenza Ngobushushu. Oku kufana ne-PN, ekuxelela uxinzelelo oluphezulu kumaqondo obushushu angqongileyo. Kwiivalvu zemizi-mveliso okanye zesinyithi, ungabonaIklasiumlinganiselo (umz., iKlasi ye-150, iKlasi yama-300), eyindlela yaseMelika (ANSI) echaza imida yoxinzelelo kumanqanaba obushushu. Kumsebenzi wethu, ukugxila kwi-PN kubalulekile.

Iinkqubo zoVavanyo loXinzelelo oluQhelekileyo

Inkqubo	Imele i	Ukusetyenziswa Okuphambili	Umzekelo
PN	Uxinzelelo lweNqanaba	Iipayipi kunye neevalvu ze-thermoplastic (umgangatho waseYurophu)	I-PN16 (ibha ezili-16 kwi-20°C)
Iklasi	Akukho (uMgangatho we-ANSI)	Iivalvu zentsimbi kunye neeflanges (umgangatho waseMelika)	Iklasi ye-150
I-CWP	Uxinzelelo Lokusebenza Olubandayo	Iivalvu zenjongo ngokubanzi (Amanzi, Umoya)	600 CWP

Ingakanani inqanaba loxinzelelo lwezixhobo ze-polypropylene?

Uqinisekisile ukuba ivalvu yakho ichanekile, kodwa kuthekani ngezinto ezidibanisa nayo? Inkqubo inamandla kuphela njengenxalenye yayo ebuthathaka, kwaye into engahambelaniyo inokubangela ukungaphumeleli okukhulu.

Izixhobo zePolypropylene nazo zilinganiswa kusetyenziswa inkqubo ye-PN, edla ngokuba yi-PN10 okanye i-PN16. Kwinkqubo ethembekileyo, umlinganiselo woxinzelelo lwezixhobo zakho kunye nemibhobho kufuneka ulingane okanye ube mkhulu kunomlinganiselo weevalvu zakho.

Ndisoloko ndikhumbuza uEric Lim ukuba ivalvu ayisebenzi yodwa. Wakha ivalvuinkquboUkuba ufaka ivalvu yebhola yePN16 eqinileyo kodwa uyidibanise nayoIzixhobo zePN10, uxinzelelo oluphezulu lokusebenza kwenkqubo yakho yonke ngoku yi-PN10 kuphela (ibha ezili-10). Eyona nxalenye ibuthathaka ilawula amandla etsheyini yonke. Yiyo loo nto siqinisekisile ukuba i-Pntek yethuIivalvu zebhola zePPziyi-PN16 eqinileyo. Oku kunika isiseko esomeleleyo, kodwa kubalulekile ukuzidibanisa neepayipi ze-PN16 kunye nezixhobo zokugcina amandla oxinzelelo oluphezulu kulo lonke umgca. Eyona nto ibalulekileyo, ingakumbi xai-thermoplasticsnjenge-polypropylene, ibubushushu. Njengoko ulwelo lusiya lushushu, izinto ziyathamba, kwaye amandla azo okugcina uxinzelelo ayehla kakhulu. Oku kubizwa ngokuba yi-'derating', kwaye kufuneka uhlale ulandela imiyalelo yomenzi.itshathi yobushushu boxinzeleloukusebenza ngokukhuselekileyo.

Ingakanani ivalvu yebhola enokuyibamba?

Ufuna nje impendulo elula kwi-PSI, kodwa iinkcukacha zihlala zikwi-"bar" okanye "PN". Ukwenza utshintsho olukhawulezileyo entlokweni yakho kuyingozi xa ukhuseleko kunye nokuthembeka kwezixhobo kusemngciphekweni.

Oku kwahluka kakhulu, ukusuka kwi-150 PSI kwiivalvu zeplastiki ukuya kwi-10,000 PSI kwiivalvu ezikhethekileyo zesinyithi ezinoxinzelelo oluphezulu. Ukuze ufumane i-PSI, guqula ukusuka kumlinganiselo we-PN: ibha e-1 imalunga ne-14.5 PSI.

Akukho mpendulo inye kulo mbuzo, yiyo loo nto kubaluleke kangaka ukujonga ivalvu ethile oyisebenzisayo. Izinto ezisetyenzisiweyo (PP, PVC, Brass, Stainless Steel), ubungakanani, kunye noyilo zonke zitshintsha impendulo. Nangona kunjalo, singayenza ibe lula kakhulu kwiimveliso zethu. I-Pntek yethuIivalvu zebhola zePPzilinganiswe nge-PN16. Ukuguqulwa kulula, kwaye wonke umntu kwiqela lakho kufuneka akwazi: phinda-phinda ixabiso lebha nge-14.5. Ngoko ke, umlinganiselo we-PN16 uthetha ukuba ivalvu inokugcina i-16 bar yoxinzelelo. Ukuze ufumane i-PSI, ubale: i-16 bar x 14.5 PSI/bar = 232 PSI. Sihlala sijikeleza oku ukuya235 PSIukuze ufumane inani elicacileyo nelikhuselekileyo. Eli linqanaba lobushushu obuqhelekileyo. Ukuba umthengi wakho eKuala Lumpur uhambisa amanzi kwi-60°C (140°F) kumgca, elo nani le-235 PSI alisasebenzi. Uxinzelelo olukhuselekileyo luya kuba sezantsi kakhulu, njengoko kubonisiwe kwiijika elihlekisayo.

Ukuguqulwa kwe-PN eqhelekileyo ukuya kwi-PSI

Uvavanyo lwe-PN	Uxinzelelo kwiBar	Uxinzelelo kwi-PSI (malunga)
I-PN10	Ibha ye-10	145 PSI
I-PN16	Ibha ye-16	235 PSI
I-PN20	Ibha ye-20	290 PSI
I-PN25	Ibha ye-25	I-362 PSI

Yintoni ivalvu yebhola yePP?

Ubona iivalvu zePVC kunye neCPVC kuyo yonke indawo, ngoko ke uyazibuza ukuba kutheni kufuneka ucinge ngePP. Ukungazi iingenelo ezikhethekileyo zepolypropylene kuthetha ukuba ungaphoswa sisisombululo esifanelekileyo kumthengi wakho.

Ivalvu yebhola yePP yivalvu ejika ikota eyenziwe ngepolypropylene, i-thermoplastic exatyiswayo ngenxa yokumelana kwayo okumangalisayo kweekhemikhali. Yindlela eqinileyo, elula, kwaye engabizi kakhulu yokulawula ulwelo olunokutsha oluya kutshabalalisa iivalvu zesinyithi.

Amandla amakhulu ePolypropylene kukuxhathisa kwayo iikhemikhali. Imelana kakuhle neendidi ezahlukeneyo zeeasidi, iziseko, iityuwa, kunye neekhemikhali zoshishino. Oku kuyenza ibe yinto esetyenziswa kakhulu kumashishini afana nokucubungula iikhemikhali, unyango lwamanzi, kunye nezolimo. KwaPntek, sibone amandla saza sagqiba ekubeni siyiphucule. Sayiphuhlisa eyethu.Ivalvu yeBhola yoQhagamshelo lwePPngokusekelwe kuyilo lwesikhunta olukhethekileyo nolunelungelo elilodwa lomenzi. Oku kusinika ulawulo olupheleleyo kumgangatho kunye nokusebenza. Uphawu oluphambili kukuzinikela kwethu kwiUvavanyo lwe-PN16 kuzo zonke iisayizi, ukususela kweyona incinci ukuya kweyona inkulu. Oku akuqhelekanga kwimarike, kodwa sikholelwa ukuba ukhuseleko kunye nomgangatho kufuneka zihambelane. Le yeyona nto iphambili eyenza ukuba iivalvu zethu zithengiswe kakhulu kwiimarike ezifunwa kakhulu kulo lonke elaseMzantsi-mpuma Asia, eMbindi Mpuma, naseMzantsi Melika. Zibonelela ngesisombululo esithembekileyo nesingabizi kakhulu sokulawula iikhemikhali namanzi ngokukhuselekileyo.

Uluhlu lweValve yeBhola yePntek yePN16 PP

Uhlobo loQhagamshelo	Ubungakanani obufumanekayo
Isiphelo seSokhethi	20mm, 25mm, 32mm, 40mm, 50mm, 63mm, 75mm, 90mm, 110mm
Isiphelo Esinemisonto	1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″, 2-1/2″, 3″, 4″

Isiphelo

Uvavanyo lwe-PN16 yevalvu yebhola yePP lubalulekile, kodwa soloko luchaphazela ubushushu. Ukuqonda olu lwalamano kubalulekile ekwakheni inkqubo ekhuselekileyo, ethembekileyo, nehlala ixesha elide kubathengi bakho.