Ukhetha ivalvu yenkqubo entsha. Ukukhetha enye engakwaziyo ukumelana noxinzelelo lomgca kunokukhokelela kwisiphithiphithi esingalindelekanga, esiyingozi, esibangela izikhukula, umonakalo wepropathi, kunye nexesha elibizayo lokungasebenzi.

Ivalvu yebhola yePVC eqhelekileyo idla ngokulinganiselwa kwi-150 PSI (iiponti nge-Square Inch) kwi-73°F (23°C). Olu xinzelelo luyancipha kakhulu njengoko ubushushu bolwelo busanda, ngoko ke kufuneka usoloko ujonga idatha yomenzi.

Le yenye yezona nkcukacha zibalulekileyo zobugcisa endizixoxa namaqabane afana noBudi.uvavanyo loxinzeleloayikokufunda nje inani; imalunga nokuqinisekisa ukhuseleko nokuthembeka kwabathengi bakhe. Xa iqela likaBudi linokuchaza ngokuzithemba isizathu sokubaIvalvu yePSI eyi-150Ifanelekile kwinkqubo yokunkcenkceshela kodwa hayi kumgca oshushu wamanzi, isuka ekubeni ngabathengisi iye ekubeni ngabacebisi abathembekileyo. Olu lwazi luthintela ukungaphumeleli kwaye lwakha ubudlelwane bexesha elide, obuyinzuzo kubo bonke obusisiseko seshishini lethu ePntek.

Ingakanani i-PVC enikwa inqanaba loxinzelelo?

Umthengi wakho ucinga ukuba zonke iindawo zePVC ziyafana. Le mpazamo iyingozi inokukhokelela ekubeni asebenzise umbhobho ophantsi onevalvu ephezulu, nto leyo ebangela ukuba kubekho ibhombu yexesha elikhawulezayo kwinkqubo yakhe.

Umlinganiselo woxinzelelo lwe-PVC uxhomekeke kubukhulu bodonga lwayo (iShedyuli) kunye nobubanzi. Umbhobho weStandard Schedule 40 ungasukela kwi-PSI engaphezulu kwama-400 kwiisayizi ezincinci ukuya ngaphantsi kwama-PSI angama-200 kwiinkulu.

Yimpazamo eqhelekileyo ukucinga ukuba inkqubo inikwe i-150 PSI kuba nje ivalvu yebhola inikwe. Ndisoloko ndigxininisa kuBudi ukuba yonke inkqubo inamandla kuphela njengenxalenye yayo ebuthathaka. Uvavanyo loxinzelelo lwePVCumbhobhoyahlukile kwivalvu. Ichazwa "yiShedyuli" yayo, ebhekisa kubukhulu bodonga.

• Ishedyuli 40:Olu bubukhulu bodonga obuqhelekileyo kwiimpompo zamanzi kunye nokunkcenkceshela.
• Ishedyuli 80:Le pipe inodonga olutyebileyo kakhulu, ngoko ke, inezinga eliphezulu kakhulu loxinzelelo. Ihlala isetyenziswa kwiindawo zoshishino.

Eyona nto ibalulekileyo kukuba umlinganiselo woxinzelelo uyatshintsha ngokwesayizi yombhobho. Nantsi indlela elula yokuthelekisa umbhobho weShedyuli 40 kwi-73°F (23°C):

Inkqubo enepayipi ye-4″ Sch 40 kunye neevalvu zethu zebhola ze-PSI eziyi-150 inoxinzelelo oluphezulu lokusebenza lwe-150 PSI. Kufuneka usoloko uyila icandelo eliphantsi.

Ingakanani inqanaba loxinzelelo lwevalvu yebhola?

Ubona ivalvu yebrass enikwe i-600 PSI kunye nevalvu yePVC ene-150 PSI. Ukungaqondi ukuba kutheni zahlukile kunokwenza kube nzima ukuthethelela ukukhetha efanelekileyo kulo msebenzi.

Umlinganiselo woxinzelelo lwevalvu yebhola umiselwa zizinto ezisetyenziswayo kunye nolwakhiwo lwayo. Iivalvu zePVC zihlala ziyi-150 PSI, ngelixa iivalvu zesinyithi ezenziwe ngobhedu okanye ngentsimbi zinokulinganiswa ukusuka kwi-600 PSI ukuya kwi-3000 PSI.

Igama elithile“ivalvu yebhola”ichaza umsebenzi, kodwa amandla oxinzelelo avela kwizinto ezisetyenzisiweyo. Yimeko eqhelekileyo yokusebenzisa isixhobo esifanelekileyo somsebenzi. Kubathengi bakhe, iqela likaBudi kufuneka libakhokele ngokusekelwe kwisicelo.

Izinto Ezibalulekileyo Ezichaza Uvavanyo Loxinzelelo:

1. Izinto zomzimba:Le yeyona nto iphambili. I-PVC inamandla, kodwa isinyithi sinamandla. I-brass lukhetho oluqhelekileyo lwamanzi ashushu asekhaya kunye nokusetyenziswa ngokubanzi ukuya kuthi ga kwi-600 PSI. Intsimbi yekhabhoni kunye nentsimbi engatyiwayo zisetyenziselwa iinkqubo zoshishino ezinoxinzelelo oluphezulu apho uxinzelelo lunokuba ngamawaka e-PSI.
2. Izixhobo zeSihlalo kunye neSeal:Iindawo "ezithambileyo" ngaphakathi kwevalvu, njengezihlalo zePTFE ezisetyenziswa ziivalvu zethu zePntek, nazo zinemida yoxinzelelo kunye nobushushu. Kufuneka zikwazi ukwenza isitywino ngaphandle kokuphazamiseka okanye ukutshatyalaliswa luxinzelelo lwenkqubo.
3. Ulwakhiwo:Indlela umzimba wevalvu ohlanganiswe ngayo ikwadlala indima ekuqineni kwawo.

A Iivalvu zePVCIreyithingi ye-150 PSI yanele kakhulu kwiindlela ezininzi zokusetyenziswa kwamanzi ezenzelwe zona, njengokunkcenkceshela, amachibi okubhukuda, kunye nemibhobho yamanzi yasekhaya.

Yintoni i-valve pressure rating?

Ubona "150 PSI @ 73°F" emzimbeni wevalvu. Ukuba ugxila kuphela kwi-150 PSI kwaye ungawunaki ubushushu, ungayifaka ivalvu kumgca apho iqinisekisiwe ukuba ayizukusebenza khona.

Uvavanyo loxinzelelo lwevalvu lolona xinzelelo luphezulu lokusebenza olukhuselekileyo olunokusetyenziswa yivalvu kubushushu obuthile. Kwiivalvu zamanzi, oku kudla ngokubizwa ngokuba luvavanyo loxinzelelo olubandayo (CWP).

Le nkcazelo inamacandelo amabini—uxinzeleloatubushushu—yeyona ngcamango ibalulekileyo yokufundisa. Ubudlelwane bulula: njengoko ubushushu bunyuka, amandla ezinto zePVC ayehla, kwaye nomlinganiselo woxinzelelo lwazo uyahla. Oku kubizwa ngokuba yi-"de-rating." Iivalvu zethu zePntek zilinganiswe nge-150 PSI kwindawo eqhelekileyo yamanzi obushushu begumbi. Ukuba umthengi wakho uzama ukusebenzisa loo valve inye kumgca onamanzi angama-120°F (49°C), uxinzelelo olukhuselekileyo anokuluphatha lunokwehla ngama-50% nangaphezulu. Wonke umenzi othembekileyo ubonelela ngetshathi yokunciphisa umlinganiselo ebonisa uxinzelelo oluphezulu oluvumelekileyo kubushushu obuphezulu. Ndiqinisekisile ukuba iBudi inazo ezi tshati kuzo zonke iimveliso zethu. Ukungawunaki lo budlelwane yeyona nto iphambili yokusilela kwezinto kwiinkqubo zemibhobho ye-thermoplastic.

Ithini inqanaba loxinzelelo lwevalvu yebhola yeClass 3000?

Umthengi wemizi-mveliso ucela ivalvu ethi “Class 3000″”. Ukuba awazi ukuba oku kuthetha ukuthini, ungazama ukufumana i-PVC equivalent, engekhoyo, kwaye ibonisa ukungabikho kobuchule.

Ivalvu yebhola yeClass 3000 yivalvu yemizi-mveliso enoxinzelelo oluphezulu eyenziwe ngentsimbi eqinisiweyo, elinganiswe ukuba iphathe i-3000 PSI. Olu luhlu olwahluke ngokupheleleyo kwiivalvu zePVC kwaye lusetyenziselwa ioyile negesi.

Lo mbuzo unceda ekudwebeni umgca ocacileyo kwisanti yokusetyenziswa kwemveliso. Uvavanyo "lweKlasi" (umz., iKlasi 150, 300, 600, 3000) luyinxalenye yomgangatho othile we-ANSI/ASME osetyenziselwa iiflanges kunye neevalvu zoshishino, phantse zenziwe ngesinyithi. Le nkqubo yovavanyo iyinkimbinkimbi kakhulu kunovavanyo olulula lwe-CWP kwivalvu yePVC.Ivalvu yeklasi ye-3000Ayisiyonto yoxinzelelo oluphezulu kuphela; yenzelwe amaqondo obushushu agqithisileyo kunye neendawo ezinzima ezifana nezo zifumaneka kwishishini leoyile negesi. Yimveliso ekhethekileyo ebiza amakhulu okanye amawaka eedola. Xa umthengi ecela oku, usebenza kwishishini elithile elingafanelanga iPVC. Ukwazi oku kuvumela iqela likaBudi ukuba lichonge ngoko nangoko isicelo kwaye liphephe ukucaphula umsebenzi apho iimveliso zethu zingasetyenziswa gwenxa ngendlela eyingozi. Kuqinisa ubuchule ngokwazi into oyenzayo.musathengisa, kangangoko wenzayo.

Isiphelo

Umlinganiselo woxinzelelo lwevalvu yebhola yePVC udla ngokuba yi-150 PSI kubushushu begumbi, kodwa oku kuyehla njengoko ubushushu bunyuka. Soloko ulinganisa ivalvu neemfuno zoxinzelelo kunye nobushushu benkqubo.