Udinga ivalvu yomugqa wezimboni noma wamakhemikhali, kodwa awuqiniseki ukuthi ipulasitiki ingakwazi yini ukumelana nomfutho. Ukukhetha ivalvu engalungile kungaholela ekuvuza okuyingozi, isikhathi sokungasebenzi esibizayo, kanye nesigameko esikhulu sokuphepha.

I-valve yebhola ye-PP esezingeni eliphezulu, njengamamodeli ethu e-Pntek, inesilinganiso sokucindezela se-PN16. Lokhu kusho ukuthi ingaphatha ngokuphephile amabha ayi-16 (cishe ama-235 PSI) ekushiseni kwegumbi. Okubaluleke kakhulu, lo mthamo uyancipha njengoba izinga lokushisa loketshezi likhuphuka.

Uma ngikhuluma nabalingani abanjengo-Eric Lim eMalaysia, isilinganiso sokucindezela akuyona nje inombolo; simayelana nokuphepha nokwethembana. Inkampani yakhe ihlinzeka ngamaphrojekthi kulo lonke elaseNingizimu-mpumalanga ye-Asia, futhi badinga ukwazi ukuthi imikhiqizo abayithengisayo ngeke yehluleke. Isilinganiso sokucindezela esishiwo yi-valve siyindawo yokuqala, kodwa ubuchwepheshe bangempela busekuqondeni ukuthi iziphatha kanjani ngaphansi kwezimo zangempela. Lolu lwazi yilokho okuhlukanisa ukuthengiselana okulula nokubambisana kwangempela, futhi yilokho esigxila kukho kwa-Pntek.

Iyini izinga lokucindezela kwevalvu yebhola?

Ubona amagama afana ne-CLASS 150, PN16, kanye ne-CWP kumashidi wedatha bese uzizwa udidekile. Lokhu kudideka kungaholela eku-odeni i-valve engalungile ngephutha, kudalwe uhlelo olungaphephile kumakhasimende akho.

Isilinganiso sokucindezela sikutshela ukuthi ingcindezi ephezulu kakhulu ivalvu engayiphatha ngokuphepha ekushiseni okuthile. Kusetshenziswa amazinga ahlukene njenge-PN (European), Class (American), kanye ne-CWP (General), ngakho-ke kufanele wazi ukuthi iyiphi isistimu oyibhekayo.

Ake sichaze la magama ngoba alula kakhulu kunalokho abukeka ngakho. Isilinganiso sokucindezela yisona sici sokuphepha esibaluleke kakhulu kunoma yiliphi i-valve. Kodwa-ke, izingxenye ezahlukene zomhlaba kanye nezimboni ezahlukene zisebenzisa izinhlelo ezahlukene, okungaba yinto edidayo. Ngezinhlelo zamapayipi epulasitiki, uzobona kaningiPNisilinganiso. Igama elithi “PN” limeleI-Pression Nominale, okuyigama lesiFulentshi elisho ukucindezela okujwayelekile. Kubonisa ukucindezela okuphezulu kakhulu kuibhaukuthi ingxenye ingamelana nokushisa kwegumbi (20°C). Esinye isilinganiso esivamile yilesiI-CWP, noma Ukucindezela Kokusebenza Okubandayo. Lokhu kufana ne-PN, okutshela ukucindezela okuphezulu kwamazinga okushisa azungezile. Kuma-valve ezimboni noma ensimbi, ungase uboneIkilasiisilinganiso (isb., Isigaba 150, Isigaba 300), okuyindinganiso yaseMelika (ANSI) echaza imikhawulo yokucindezela kuzo zonke izinhlobo zokushisa. Emsebenzini wethu, ukugxila ku-PN kubalulekile.

Izinhlelo Zokulinganisa Ukucindezela Okuvamile

Uhlelo	Kumelela	Ukusetshenziswa Okuyinhloko	Isibonelo
PN	I-Pression Nominale	Amapayipi namavalvu e-thermoplastic (okujwayelekile kwaseYurophu)	I-PN16 (ibha engu-16 ku-20°C)
Ikilasi	Akukho (Izinga le-ANSI)	Amavalvu ensimbi nama-flange (okujwayelekile kwaseMelika)	Iklasi 150
I-CWP	Ukucindezeleka Kokusebenza Okubandayo	Amavalvu enhloso ejwayelekile (Amanzi, Umoya)	600 CWP

Iyini isilinganiso sokucindezela kokufakwa kwe-polypropylene?

Uqinisekisile ukuthi ivalvu yakho ilungile, kodwa kuthiwani ngezihlanganisi ezixhumanisa nayo? Uhlelo luqine kuphela njengengxenye yalo ebuthaka kakhulu, futhi ukuhlanganiswa okungafani kungabangela ukwehluleka okukhulu.

Ukufakwa kwe-polypropylene nakho kukalwa kusetshenziswa uhlelo lwe-PN, ngokuvamile i-PN10 noma i-PN16. Ukuze kube nohlelo oluthembekile, isilinganiso sokucindezela kokufakwa kwakho namapayipi kumele silingane noma sibe sikhulu kunesilinganiso samavalvu akho.

Ngihlala ngikhumbuza u-Eric Lim ukuthi ivalvu ayisebenzi yodwa. Wakha i-valveuhleloUma ufaka ivalvu yebhola ye-PN16 eqinile kodwa uyixhuma ngeUkufakwa kwe-PN10, ingcindezi yokusebenza ephezulu kakhulu yesistimu yakho manje i-PN10 kuphela (ibha eli-10). Ingxenye ebuthakathaka kakhulu ilawula amandla eketanga lonke. Yingakho siqinisekisile ukuthi i-Pntek yethuAmavalvu ebhola le-PPziyi-PN16 eqinile. Lokhu kunikeza isisekelo esiqinile, kodwa kubalulekile ukuzihlanganisa namapayipi e-PN16 kanye nezinto zokufakelwa ukuze kulondolozwe ikhono lokucindezela okuphezulu kulo lonke ulayini. Isici esibaluleke kakhulu, ikakhulukazi ngei-thermoplasticsnjenge-polypropylene, izinga lokushisa liyakhuphuka. Njengoba uketshezi lushisa kakhulu, izinto ziyathamba, futhi ikhono lalo lokubamba ingcindezi liyehla kakhulu. Lokhu kubizwa ngokuthi 'ukudunga', futhi kufanele uhlale ulandela okwenziwa umenzi.ishadi lokushisa kwengcindeziukusebenza ngokuphephile.

Ingakanani i-valve yebhola engabamba i-psi?

Ufuna nje impendulo elula ku-PSI, kodwa imininingwane ivame ukuba “kubha” noma “i-PN”. Ukwenza ukuguqulwa okusheshayo ekhanda lakho kuyingozi uma ukuphepha kanye nobuqotho bemishini kusengozini.

Lokhu kuyahlukahluka kakhulu, kusukela ku-150 PSI kwamanye ama-valve epulasitiki kuya ku-10,000 PSI yama-valve ensimbi akhethekile anomfutho ophezulu. Ukuze uthole i-PSI, guqula kusukela esilinganisweni se-PN: ibha eli-1 licishe libe yi-14.5 PSI.

Ayikho impendulo eyodwa kulo mbuzo, yingakho kubaluleke kangaka ukuhlola ivalvu ethile oyisebenzisayo. Izinto zokwakha (PP, PVC, Brass, Stainless Steel), usayizi, kanye nomklamo konke kushintsha impendulo. Kodwa-ke, singakwenza kube lula kakhulu ngemikhiqizo yethu. I-Pntek yethuAmavalvu ebhola le-PPzilinganiswe nge-PN16. Ukuguqulwa kulula, futhi wonke umuntu eqenjini lakho kufanele akwazi: vele uphindaphinde inani lebha ngo-14.5. Ngakho-ke, isilinganiso se-PN16 sisho ukuthi ivalvu ingabamba i-bar engu-16 yokucindezela. Ukuze uthole i-PSI, ubala: i-bar engu-16 x 14.5 PSI/bar = 232 PSI. Sivame ukufingqa lokhu ku-235 PSIukuze uthole inombolo ecacile nephephile. Lesi yisilinganiso ekushiseni okuzungezile. Uma ikhasimende lakho eKuala Lumpur ligeleza amanzi ku-60°C (140°F) ngomugqa, leso silinganiso se-235 PSI asisasebenzi. Umfutho ophephile uzoba phansi kakhulu, njengoba kuboniswe ku-ijika elihlukanisayo.

Ukuguqulwa Okuvamile kwe-PN kuya ku-PSI

Isilinganiso se-PN	Ukucindezela eBhari	Ingcindezi ku-PSI (cishe)
I-PN10	Ibha eli-10	145 PSI
I-PN16	Ibha engu-16	235 PSI
I-PN20	Ibha engu-20	290 PSI
I-PN25	Ibha engu-25	I-PSI engu-362

Iyini ivalvu yebhola le-PP?

Ubona ama-valve e-PVC kanye ne-CPVC yonke indawo, ngakho-ke uyazibuza ukuthi kungani kufanele ucabangele i-PP. Ukungazi izinzuzo eziyingqayizivele ze-polypropylene kusho ukuthi ungase uphuthelwe yisisombululo esifanele iklayenti lakho.

I-PP ball valve iyi-quarter-turn valve eyenziwe nge-polypropylene, i-thermoplastic eyaziswa ngokumelana kwayo okumangalisayo kwamakhemikhali. Iyisinqumo esiqinile, esilula, futhi esingabizi kakhulu sokulawula uketshezi olugqwalisayo olungabhubhisa ama-valve ensimbi.

Amandla amakhulu e-polypropylene ukumelana kwayo namakhemikhali. Imelana kahle nobubanzi be-asidi, izisekelo, usawoti, namakhemikhali ezimboni. Lokhu kuyenza ibe yinto esetshenziswa kakhulu ezimbonini ezifana nokucubungula amakhemikhali, ukwelashwa kwamanzi, kanye nezolimo. Kwa-Pntek, sibone amandla futhi sanquma ukuyithuthukisa. Sakha eyethuI-PP Compression Ball Valvengokusekelwe kumklamo wesikhunta okhethekile, onelungelo lobunikazi. Lokhu kusinika ukulawula okuphelele kwekhwalithi kanye nokusebenza. Isici esibalulekile ukuzibophezela kwethu ku-Isilinganiso se-PN16 sabo bonke osayizi, kusukela kokuncane kuya kokukhulu. Lokhu akuvamile emakethe, kodwa sikholelwa ukuthi ukuphepha nekhwalithi kufanele kuhambisane. Lesi yisizathu esikhulu esenza ama-valve ethu athengiswe kakhulu ezimakethe ezifunwa kakhulu kulo lonke elaseNingizimu-mpumalanga ye-Asia, eMpumalanga Ephakathi, naseNingizimu Melika. Anikeza ikhambi elithembekile nelingabizi lokuphatha amakhemikhali namanzi ngokuphephile.

Uhla lwe-Pntek's PN16 PP Ball Valve

Uhlobo Lokuxhumeka	Osayizi Abatholakalayo
Ukuphela Kwesokhethi	20mm, 25mm, 32mm, 40mm, 50mm, 63mm, 75mm, 90mm, 110mm
Isiphetho Esinochungechunge	1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″, 2-1/2″, 3″, 4″

Isiphetho

Isilinganiso se-PN16 se-PP ball valve siyisihluthulelo, kodwa ngaso sonke isikhathi sithinta izinga lokushisa. Ukuqonda lobu budlelwano kubalulekile ekwakheni uhlelo oluphephile, oluthembekile, noluhlala isikhathi eside kumakhasimende akho.