Udinga ukuthenga ama-valve e-PVC ephrojekthi, kodwa ikhathalogu iyamangaza. Ibhola, isheke, uvemvane, i-diaphragm—ukukhetha okungalungile kusho uhlelo oluvuzayo, oluhlulekayo, noma olungasebenzi kahle.

Izinhlobo eziyinhloko zama-valve e-PVC zihlukaniswa ngomsebenzi wawo: ama-valve ebhola okulawula ukuvala/ukuvala, ama-valve okuhlola ukuze uvimbele ukugeleza emuva, ama-butterfly valves okudonsa amapayipi amakhulu, nama-diaphragm valves okuphatha uketshezi olubolayo noma oluhlanzekile.

Lona umbuzo engivame ukuxoxa ngawo nozakwethu, okuhlanganisa no-Budi, umphathi ophezulu wokuthenga e-Indonesia. Amakhasimende akhe, kusukela kosonkontileka kuya kubathengisi, kumele azi ukuthi athola ithuluzi elifanele lomsebenzi. Auhlelo lwamapayipiinamandla kuphela njengengxenye yawo ebuthakathaka, nokukhetha okulungileuhlobo lwe-valvekuyisinyathelo sokuqala sokwakha uhlelo oluthembekile, oluhlala isikhathi eside. Ukuqonda lo mehluko akulona nje ulwazi lobuchwepheshe; kuyisisekelo sephrojekthi eyimpumelelo.

Ingabe zikhona izinhlobo ezahlukene zamavalvu e-PCV?

Uzwa igama elithi “PVC valve” futhi ungase ucabange ukuthi umkhiqizo owodwa, ojwayelekile. Lokhu kucabanga kungaholela ekutheni ufake i-valve engakwazi ukumelana nokucindezela noma ukwenza umsebenzi owudingayo.

Yebo, kunezinhlobo eziningi zamavalvu e-PVC, ngalinye linomshini wangaphakathi oyingqayizivele oklanyelwe umsebenzi othile. Okuvame kakhulu okokuqala/ukumisa ukugeleza (amavalvu ebhola) nokuvimbela ngokuzenzakalelayo ukugeleza okubuyela emuva (hlola amavalvu).

Ukucabanga ukuthi wonke ama-valve e-PVC ayafana kuyiphutha elivamile. Eqinisweni, ingxenye ye-“PVC” ichaza nje into eyenziwe ivalvu—ipulasitiki eqinile, engagqwali. Ingxenye ethi "valve" ichaza umsebenzi wayo. Ukusiza u-Budi nethimba lakhe baqondise amakhasimende abo, sibahlukanisa ngomsebenzi wabo oyinhloko. Lokhu kuhlukaniswa okulula kusiza wonke umuntu akhethe umkhiqizo olungile ngokuzethemba.

Nakhu ukuhlukaniswa okuyisisekelo kwezinhlobo ezivame kakhulu ozohlangana nazo ekuphathweni kwamanzi:

Yiziphi izinhlobo ezine zePVC?

Ubona amalebula ahlukene njenge-PVC-U ne-C-PVC bese uzibuza ukuthi abalulekile yini. Ukusebenzisa i-valve ejwayelekile emgqeni wamanzi ashisayo ngoba ubungazi ukuthi umehluko kungabangela ukwehluleka okuyinhlekelele.

Lo mbuzo umayelana nezinto zepulasitiki, hhayi uhlobo lwe-valve. Izinto ezine ezijwayelekile zomndeni we-PVC yi-PVC-U (ejwayelekile, yamanzi abandayo), i-C-PVC (yamanzi ashisayo), i-PVC-O (amandla aphezulu), ne-M-PVC (i-impact-modified).

Lona umbuzo omuhle kakhulu ngoba ufinyelela enhliziyweni yekhwalithi yomkhiqizo nokuphepha kohlelo lokusebenza. ukudida ama-valve izinhlobo ngezinhlobo zezinto kulula. Kwa-Pntek, sikholelwa ukuthi uzakwethu ofundile unguzakwethu ophumelelayo, ngakho ukucacisa lokhu kubalulekile. I-valve yakho yenziwe ngayo isho imikhawulo yayo yokushisa, isilinganiso sokucindezela, nokumelana namakhemikhali.

I-PVC-U (I-Polyvinyl Chloride Engafakwanga Ipulasitiki)

Lolu uhlobo oluvame kakhulu lwe-PVC olusetshenziselwa amapayipi, okokufaka, nama-valve eNyakatho Melika, eYurophu nase-Asia. Iqinile, ayibizi kakhulu, futhi imelana kakhulu nezinhlobonhlobo zamakhemikhali. Kuyindinganiso yokufakwa kwamanzi abandayo. Iningi lamavalvu ethu ebhola e-Pntek kanye nama-valve okuhlola ukuthi ama-oda e-Budi enziwa nge-PVC-U yezinga eliphezulu.

I-C-PVC (i-Chlorinated Polyvinyl Chloride)

I-C-PVC ihamba ngenqubo eyengeziwe yokufakwa kwe-chlorine. Lolu shintsho olulula lukhulisa kakhulu ukumelana kwayo nezinga lokushisa. Nakuba i-PVC-U kufanele isetshenziswe kuphela kufika ku-60°C (140°F), i-C-PVC ingakwazi ukumelana nezinga lokushisa elifika ku-93°C (200°F). Kufanele usebenzise amavalvu e-C-PVC emigqeni yamanzi ashisayo.

Ezinye Izinhlobo

I-PVC-O (I-Oriented) ne-M-PVC (Elungisiwe) ayijwayelekile kakhulu kumavalvu futhi kakhulu kumapayipi okucindezela okukhethekile, kodwa kuhle ukwazi ukuthi akhona. Zenzelwe izilinganiso zokucindezela okuphezulu namandla omthelela angcono.

Yiziphi izinhlobo eziyisithupha eziyinhloko zamavalvu?

Wakha uhlelo oluyinkimbinkimbi futhi udinga okungaphezu nje kwe-valve elula yokuvula/ukuvala. Ukubona amagama afana ne-“Globe” noma “Isango” kungase kudide uma usebenza kakhulu ngamavalvu ebhola e-PVC.

Imindeni eyisithupha eyinhloko esebenzayo yamavalvu yiBall, Gate, Globe, Check, Butterfly, kanye namavalvu e-Diphragm. Iningi liyatholakala ku-PVC ukuphatha izinhlelo lapho ama-valve ensimbi engagqwala noma ebiza kakhulu.

Nakuba sigxile ezinhlotsheni ezivame kakhulu ze-PVC, ukuqonda wonke umndeni wama-valve kukusiza wazi ukuthi kungani ama-valve athile ekhethwa ngaphezu kwamanye. Ezinye ziyizindinganiso zemboni, kanti ezinye ezemisebenzi ethile. Lolu lwazi olubanzi lusiza ithimba likaBudi ukuthi liphendule ngisho nemibuzo yekhasimende enemininingwane eminingi.

Ukuphathwa kwamanzi okuvamile,ama-valve ebhola, hlola ama-valve, futhiizivalo uvemvaneyizinhlobo ze-PVC ezibaluleke kakhulu ukwazi.

Yiziphi izinhlobo ezahlukene zama-valve okuhlola i-PVC?

Udinga i-valve yokuhlola ukuze uvimbele ukugeleza emuva, kodwa ubona izinketho ezifana “nokushwiba,” “ibhola,” kanye “nentwasahlobo.” Ukufaka engalungile kungaholela ekuhlulekeni, isando samanzi, noma i-valve ingasebenzi nhlobo.

Izinhlobo eziyinhloko zamavalvu okuhlola e-PVC isheke lokushwiba, ukuhlola ibhola, nokuhlola intwasahlobo. Ngayinye isebenzisa indlela ehlukile yokungenzi lutho ukumisa ukugeleza okubuyela emuva futhi ifanele ukuma kwamapayipi okuhlukile nezimo zokugeleza.

Ivalvu yokuhlola ingumnakekeli othule wesistimu yakho, esebenza ngokuzenzakalelayo ngaphandle kwanoma yiziphi izibambo noma amandla angaphandle. Kodwa akubona bonke ababheki abasebenza ngendlela efanayo. Ukukhetha okulungile kubalulekile ekuvikeleni iphampu nobuqotho besistimu. Lena imininingwane engihlala ngiyigcizelela noBudi, njengoba ithinta ngokuqondile ukwethembeka kwesikhathi eside kokufakwa kwamakhasimende akhe.

I-PVC Swing Check Valve

Lolu uhlobo olulula kakhulu. Ifaka i-hinged flap (noma idiski) evuleka ngokugeleza kwamanzi. Uma ukugeleza kuma noma kuhlehla, amandla adonsela phansi kanye nokucindezela emuva shwiba i-flap ivale esihlalweni sayo. Asebenza kahle kakhulu kumapayipi avundlile noma kumapayipi aqondile ageleza phezulu.

I-PVC Ball Check Valve

Lokhu okukhethekile kwethu ePntek. Ibhola eliyindilinga lihlala ekamelweni. Ukugeleza okuya phambili kuphusha ibhola liphume endleleni yokugeleza. Uma ukugeleza kuhlehla, iphushela ibhola emuva esihlalweni, idale uphawu oluqinile. Zithembeke ngokwedlulele, zingafakwa ziqonde phezulu noma zivundlile, futhi azinawo amahinge noma iziphethu ezizoguga.

I-PVC Spring Check Valve

Lolu hlobo lusebenzisa isiphethu ukusiza ukuvala i-valve ngokushesha lapho ukugeleza kuma. Lesi senzo sokuvala ngokushesha sihle kakhulu ekuvimbeleni isando samanzi—i-shockwave elimazayo edalwe ukuma okungazelelwe kokugeleza. Angafakwa kunoma yikuphi ukuma.

Isiphetho

Ukukhetha i-valve ye-PVC efanele kusho ukuqonda uhlobo lwayo—ibhola lokulawula, hlola ukugeleza emuva—kanye nezinto zepulasitiki ngokwazo. Lolu lwazi luqinisekisa ukwethembeka kwesistimu, luvimbela ukwehluleka, futhi lwakha ukwethenjwa kwamakhasimende.