Ukhetha ivalvu yesistimu entsha. Ukukhetha engakwazi ukubhekana nokucindezela komugqa kungaholela ekuqhumeni okungazelelwe, okubangela isikhukhula, umonakalo wempahla, kanye nesikhathi esibizayo sokungasebenzi.

I-valve yebhola ye-PVC ejwayelekile ivame ukulinganiselwa ku-150 PSI (Amaphawundi nge-Inch yesikwele) ku-73°F (23°C). Lesi silinganiso sokucindezela sincipha kakhulu njengoba izinga lokushisa loketshezi likhuphuka, ngakho-ke kufanele uhlole njalo idatha yomenzi.

Lena ngenye yemininingwane yobuchwepheshe ebaluleke kakhulu engixoxa ngayo nabalingani abanjengoBudi.isilinganiso sokucindezelaakukhona nje ukufunda inombolo; kumayelana nokuqinisekisa ukuphepha nokuthembeka kwamakhasimende akhe. Lapho ithimba likaBudi lingachaza ngokuzethemba ukuthi kunganiI-valve ye-PSI engu-150ilungele uhlelo lokunisela kodwa hhayi umugqa wamanzi ashisayo, isuka ekubeni abathengisi iye ekubeni abeluleki abathembekile. Lolu lwazi luvimbela ukwehluleka futhi lwakha ubudlelwano besikhathi eside, obuzuzisa bonke obuyisisekelo sebhizinisi lethu kwa-Pntek.

Ingakanani ingcindezi elinganiswa yi-PVC?

Iklayenti lakho licabanga ukuthi zonke izingxenye ze-PVC ziyafana. Leli phutha eliyingozi lingaholela ekusebenziseni ipayipi elisezingeni eliphansi elinevalvu ephezulu, okubangela ibhomu lesikhathi esisheshayo ohlelweni lwabo.

Isilinganiso sokucindezela se-PVC sincike ekujiyeni kodonga lwayo (Ishejuli) kanye nobubanzi. Ipayipi elijwayelekile le-Schedule 40 lingasukela ku-PSI engaphezu kuka-400 ngobukhulu obuncane kuya ku-PSI engaphansi kuka-200 kwabakhulu.

Kuyiphutha elivamile ukucabanga ukuthi uhlelo lulinganiselwe i-150 PSI ngoba nje ivalvu yebhola injalo. Ngihlala ngigcizelela kuBudi ukuthi lonke uhlelo luqine njengengxenye yalo ebuthakathaka kakhulu. Isilinganiso sokucindezela se-PVCipayipiihlukile ku-valve. Ichazwa “ngeShejuli” yayo, ebhekisela ekujiyeni kodonga.

• Ishejuli 40:Lobu ubukhulu bodonga obujwayelekile bamanzi amaningi kanye nokunisela.
• Ishejuli 80:Leli phayiphi linodonga olukhulu kakhulu, ngakho-ke, linesilinganiso sokucindezela esiphezulu kakhulu. Livame ukusetshenziswa ezisetshenziswa ezimbonini.

Okubalulekile ukuthi isilinganiso sokucindezela siyashintsha ngosayizi wepayipi. Nasi isiqhathaniso esilula sepayipi le-Schedule 40 ku-73°F (23°C):

Uhlelo olunepayipi le-Sch 40 elingu-4″ kanye nama-valve ethu ebhola le-PSI angu-150 lunomfutho wokusebenza ophezulu ongu-150 PSI. Kumelwe uhlale uklama ingxenye enesilinganiso esiphansi kakhulu.

Iyini izinga lokucindezela kwevalvu yebhola?

Ubona ivalvu yethusi elinganiswe nge-600 PSI kanye nevalvu ye-PVC ye-150 PSI. Ukungaqondi ukuthi kungani behlukile kungenza kube nzima ukuzithethelela ngokukhetha efanele umsebenzi.

Isilinganiso sokucindezela kwevalvu yebhola sinqunywa ngezinto zayo kanye nokwakhiwa kwayo. Amavalvu e-PVC ngokuvamile angama-150 PSI, kuyilapho amavalvu ensimbi enziwe ngethusi noma ngensimbi angalinganiswa kusuka ku-600 PSI kuya ku-3000 PSI.

Igama"i-valve yebhola"uchaza umsebenzi, kodwa ikhono lokucindezela livela ezintweni zokwakha. Kuyisibonelo esivamile sokusebenzisa ithuluzi elifanele lomsebenzi. Kumakhasimende akhe, ithimba likaBudi lidinga ukubaqondisa ngokusekelwe kuhlelo lokusebenza.

Izici Eziyinhloko Ezinquma Isilinganiso Sokucindezela:

1. Izinto Zomzimba:Lesi yisici esikhulu kunazo zonke. I-PVC iqinile, kodwa insimbi inamandla. Ithusi liyindlela evamile yokusebenzisa amanzi ashisayo asemakhaya kanye nezinhlelo zokusebenza ezijwayelekile ezifika ku-600 PSI. Insimbi yekhabhoni kanye nensimbi engagqwali kusetshenziselwa izinqubo zezimboni ezinomfutho ophezulu lapho ukucindezela kungaba khona ezinkulungwaneni ze-PSI.
2. Isihlalo kanye nezinto zokuvala:Izingxenye "ezithambile" ngaphakathi kwevalvu, njengezihlalo ze-PTFE ezisetshenziswa amavalvu ethu e-Pntek, nazo zinemingcele yokucindezela kanye nokushisa. Kumelwe zikwazi ukudala uphawu ngaphandle kokukhubazeka noma ukubhujiswa yingcindezi yesistimu.
3. Ukwakhiwa:Indlela umzimba we-valve ohlanganiswe ngayo nayo idlala indima emandleni awo.

A Ama-valve e-PVCIsilinganiso se-PSI esingu-150 sanele kakhulu ekusetshenzisweni kwamanzi okuningi okwenzelwe kona, njengokunisela, amachibi okubhukuda, kanye namapayipi ezindlu.

Iyini isilinganiso sokucindezela kwe-valve?

Ubona “150 PSI @ 73°F” emzimbeni wevalvu. Uma ugxila kuphela ku-150 PSI futhi ungalinaki izinga lokushisa, ungafaka ivalvu emgqeni lapho iqinisekisiwe ukuthi izohluleka khona.

Isilinganiso sokucindezela kwevalvu yingcindezi yokusebenza ephephile ephezulu kakhulu ivalvu engayisebenzisa ekushiseni okuthile. Kumavalvu amanzi, lokhu kuvame ukubizwa ngokuthi isilinganiso seCold Working Pressure (CWP).

Le ncazelo enezingxenye ezimbili—ukucindezelaatizinga lokushisa—yiyona nto ebaluleke kakhulu okufanele uyifundise. Ubudlelwano bulula: njengoba izinga lokushisa likhuphuka, amandla ezinto ze-PVC ayehla, kanye nesilinganiso sokucindezela. Lokhu kubizwa ngokuthi “ukunciphisa izinga.” Amavalvu ethu e-Pntek alinganiswa nge-150 PSI endaweni evamile yokushisa kwegumbi. Uma ikhasimende lakho lizama ukusebenzisa lelo valve elifanayo emgqeni wamanzi angu-120°F (49°C), ingcindezi ephephile elingayiphatha ingase yehle ngo-50% noma ngaphezulu. Wonke umenzi othembekile unikeza ishadi lokunciphisa izinga elibonisa ingcindezi ephezulu evumelekile emazingeni okushisa aphezulu. Ngiqinisekisile ukuthi iBudi inala mashadi ayo yonke imikhiqizo yethu. Ukunganaki lobu budlelwano kuyimbangela yokuqala yokwehluleka kwezinto ezinhlelweni zamapayipi e-thermoplastic.

Iyini isilinganiso sokucindezela kwevalvu yebhola yeClass 3000?

Ikhasimende lemboni licela ivalvu ethi “Class 3000″. Uma ungazi ukuthi lokhu kusho ukuthini, ungase uzame ukuthola i-PVC elingana nayo, engekho, futhi ekhombisa ukuntuleka kobuchwepheshe.

I-valve yebhola ye-Class 3000 iyi-valve yezimboni enomfutho ophezulu eyenziwe ngensimbi eyakhiwe, elinganiswe ukuphatha i-3000 PSI. Lesi yisigaba esihluke ngokuphelele kuma-valve e-PVC futhi sisetshenziselwa uwoyela negesi.

Lo mbuzo usiza ukudweba umugqa ocacile esihlabathini wokusetshenziswa komkhiqizo. Izilinganiso "zekilasi" (isb., iKlasi 150, 300, 600, 3000) ziyingxenye yendinganiso ethile ye-ANSI/ASME esetshenziselwa ama-flange nama-valve ezimboni, cishe njalo enziwe ngensimbi. Lolu hlelo lokulinganisa luyinkimbinkimbi kakhulu kunesilinganiso se-CWP esilula ku-valve ye-PVC.I-valve yekilasi 3000Akuyona nje kuphela ingcindezi ephezulu; yenzelwe amazinga okushisa aphezulu kanye nezimo ezinzima njengalezo ezitholakala embonini kawoyela negesi. Kungumkhiqizo okhethekile obiza amakhulu noma izinkulungwane zamaRandi. Uma ikhasimende licela lokhu, lisebenza embonini ethile engafanele i-PVC. Ukwazi lokhu kuvumela ithimba likaBudi ukuthi libone ngokushesha uhlelo lokusebenza futhi ligweme ukucaphuna emsebenzini lapho imikhiqizo yethu ingasetshenziswa kabi khona ngendlela eyingozi. Kuqinisa ubuchwepheshe ngokwazi ukuthi yini oyenzayo.ungakwenzithengisa, noma ngabe wenzani.

Isiphetho

Isilinganiso sokucindezela sevalvu yebhola le-PVC ngokuvamile singu-150 PSI ekushiseni kwegumbi, kodwa lokhu kwehla njengoba ukushisa kukhuphuka. Njalo fanisa ivalvu nezidingo zokucindezela kanye nokushisa kwesistimu.