Ama-valve e-Cast iron kanye ne-ductile iron butterfly asetshenziswa kakhulu ukulawula ukugeleza ezimbonini ezihlukahlukene, kodwa ayahluka ngezinto ezibonakalayo, ukusebenza, kanye nokusetshenziswa. Ngezansi kukhona ukuqhathanisa okuningiliziwe okuzokusiza uqonde umehluko bese ukhetha ivalvu evumelana kangcono nezidingo zakho.
1. Ukwakheka Kwezinto Ezibalulekile
1.1 I-Cast Iron Butterfly Valve:
- Insimbi empunga, ingxubevange yensimbi enekhabhoni ephezulu (2-4%).
- Ngenxa ye-microstructure yayo, ikhabhoni ikhona ngendlela ye-flake graphite. Lesi sakhiwo sibangela ukuba insimbi iphuke eduze kwama-flakes e-graphite ngaphansi kokucindezeleka, okuyenza ibe brittle futhi ingaguquguquki kalula.
- Isetshenziswa ngokuvamile kuzinhlelo zokusebenza ezinengcindezi ephansi nezingabalulekile.
1.2 I-Ductile Iron Butterfly Valve:
- Yenziwe nge-ductile iron (eyaziwa nangokuthi i-nodular graphite cast iron noma i-ductile iron), iqukethe amanani amancane e-magnesium noma i-cerium, esabalalisa i-graphite kusimo esiyindilinga (i-nodular). Lesi sakhiwo sithuthukisa kakhulu i-ductility nokuqina kwento.
- Iqinile, iguquguquka kakhulu, futhi ayithambekele kakhulu ekuqhekekeni kune-iron cast.
2. Izakhiwo Zemishini
2.1 I-Grey Cast iron:
- Amandla: Amandla okuqina aphansi (imvamisa 20,000–40,000 psi).
- I-Ductility: I-Brittle, ijwayele ukuqhekeka ngokukhathala ngaphansi kwengcindezi noma umthelela.
- Ukumelana Nomthelela: Kuphansi, kujwayele ukuphuka ngaphansi kwemithwalo engazelelwe noma ukushaqeka okushisayo.
- Ukumelana Nokugqwala: Kumaphakathi, kuya ngendawo ezungezile kanye nokunameka.
2.2 I-Ductile Iron:
- Amandla: I-graphite eyindilinga inciphisa amaphuzu okugxilisa ingqondo, okuholela ekuqineni okuphezulu (imvamisa i-60,000–120,000 psi).
- I-Ductility: I-ductile eyengeziwe, evumela ukuguquguquka ngaphandle kokuqhekeka.
- Ukumelana Nomthelela: Kuhle kakhulu, kukwazi kangcono ukumelana nokushaqeka nokudlidliza.
- Ukumelana Nokugqwala: Kufana nensimbi yokusansimbi, kodwa kungathuthukiswa ngezimbotshana noma ngamalayini.
3. Ukusebenza Nokuqina
3.1 Amavavu e-Cast Iron Butterfly:
- Ifanele izinhlelo zokusebenza ezinomfutho ophansi (isb., kufika ku-150–200 psi, kuye ngomklamo).
- Indawo ephezulu yokuncibilika (kufika ku-1150°C) kanye ne-thermal conductivity enhle kakhulu (ifanele izinhlelo zokudambisa ukudlidliza, njengamasistimu okubhuleka).
- Ukumelana okungalungile nezingcindezi eziguquguqukayo, okubenza bangafaneleki ukudlidliza okuphezulu noma izindawo zokulayisha ezijikelezayo.
- Inzima kakhulu, okungase kwenyuse izindleko zokufaka.
3.2 Amavalvu e-Ductile Iron Butterfly:
- Ingakwazi ukumelana nezingcindezi eziphakeme (isb., kufika ku-300 psi noma ngaphezulu, kuye ngomklamo).
- Ngenxa yamandla ayo aphakeme nokuguquguquka, insimbi eyi-ductile mancane amathuba okuthi iphuke ngaphansi kokugoba noma umthelela, esikhundleni salokho igogeke ngokwepulasitiki, ihambisane nomgomo "womklamo wokuqina" wesayensi yezinto zesimanje. Lokhu kuyenza ifaneleke kakhulu izinhlelo zokusebenza ezifunayo.
- Ihlala isikhathi eside ezindaweni ezinokushintshashintsha kwezinga lokushisa noma ingcindezi yemishini.
4. Izimo Zokusebenza
4.1 Amavavu e-Cast Iron Butterfly:
- Okuvame ukusetshenziswa ezinhlelweni ze-HVAC.
- Kusetshenziswa ezinhlelweni ezingabalulekile lapho izindleko zibalulekile. - Ifanele uketshezi olunomfutho ophansi njengamanzi, umoya, noma amagesi angagqwali (chloride ion <200 ppm).
4.2 Amavalvu e-Ductile Iron Butterfly:
- Ifanele ukuphakelwa kwamanzi kanye nokwelashwa kwamanzi angcolile ngemidiya engathathi hlangothi noma ene-asidi ebuthakathaka/ye-alkaline (pH 4-10).
- Ifanele ukusetshenziswa kwezimboni, okuhlanganisa uwoyela negesi, ukucubungula amakhemikhali, nezinhlelo zamanzi ezinomfutho ophezulu.
- Kusetshenziswa kumasistimu adinga ukwethembeka okuphezulu, njengamasistimu okuvikela umlilo noma amapayipi anezingcindezi ezishintshayo.
- Ilungele uketshezi olugqwala kakhulu uma isetshenziswa nolwelwesi olufanele (isb, i-EPDM, i-PTFE).
5. Izindleko
5.1 I-Cast iron:
Ngenxa yenqubo yayo elula yokukhiqiza kanye nezindleko eziphansi zezinto ezibonakalayo, ngokuvamile zibiza kancane. Ilungele amaphrojekthi anesabelomali esilinganiselwe kanye nezidingo ezingafuneki kangako. Nakuba i-cast iron ingabizi, ukuqina kwayo kuholela ekushintshweni njalo kanye nokwenyuka kwemfucuza.
5.2 I-Ductile Iron:
Ngenxa yenqubo ye-alloying nokusebenza okuphakeme, izindleko ziphezulu. Kuzinhlelo zokusebenza ezidinga ukuqina namandla, izindleko eziphezulu ziyathetheleleka. I-Ductile iron ihambisana kakhulu nemvelo ngenxa yokuphinda igaywe kabusha (>95%).
6. Amazinga Nemininingwane
- Womabili ama-valve ahambisana namazinga afana ne-API 609, AWWA C504, noma i-ISO 5752, kodwa ama-valve e-iron ductile ngokuvamile ahlangabezana nezidingo eziphakeme zemboni zokucindezela nokuqina.
- Ama-valve ensimbi asetshenziswa kakhulu ezindaweni ezidinga ukuthotshelwa kwezindinganiso eziqinile zemboni.
7. Ukugqwala kanye Nokunakekela
- Zombili izinto ezisetshenziswayo zingenwa ukugqwala ezindaweni ezinokhahlo, kodwa amandla aphakeme e-iron ductile ayenza isebenze kangcono uma ihlanganiswe nezindwangu ezivikelayo ezifana ne-epoxy noma i-nickel coatings.
- Amavalvu ensimbi yokusansimbi angase adinge ukunakekelwa okuvamile endaweni ebolayo noma enengcindezi ephezulu.
8. Ithebula lesifingqo
| Isici | I-Cast Iron Butterfly Valve | I-Ductile Iron Butterfly Valve |
| Okubalulekile | Insimbi empunga, ishwabene | I-iron nodular, i-ductile |
| Amandla Okuqina | 20,000–40,000 psi | 60,000–120,000 psi |
| I-Ductility | Iphansi, i-brittle | Iphakeme, iguquguqukayo |
| Isilinganiso Sokucindezela | Phansi (150–200 psi) | Phezulu (300 psi noma ngaphezulu) |
| Ukumelana Nomthelela | Impofu | Kuhle kakhulu |
| Izinhlelo zokusebenza | I-HVAC, amanzi, amasistimu angabalulekile | Uwoyela/igesi, amakhemikhali, ukuvikela umlilo |
| Izindleko | Phansi | Phezulu |
| Ukumelana Nokugqwala | Okumaphakathi (okunama-coatings) | Okulingene (okungcono ngama-coatings) |
9. Ungakhetha kanjani?
- Khetha i-valve ye-butterfly yensimbi uma:
- Udinga isixazululo esingabizi kakhulu sezinhlelo zokusebenza ezinomfutho ophansi, ezingabalulekile njengokuhlinzekwa kwamanzi noma i-HVAC.
- Uhlelo lusebenza endaweni ezinzile enokucindezeleka okuncane noma ukudlidliza.
- Khetha i-ductile iron butterfly valve uma:
- Uhlelo lokusebenza lubandakanya ukucindezela okuphezulu, imithwalo eguqukayo, noma uketshezi olubolayo.
- Ukuqina, ukumelana nomthelela, nokuthembeka kwesikhathi eside yizinto eziza kuqala.
- Isicelo sidinga izimboni noma amasistimu abucayi njengokuvikela umlilo noma ukucutshungulwa kwamakhemikhali.
10. ZFA VALVE isincomo
Njengomkhiqizi onokuhlangenwe nakho kweminyaka eminingi kumavalvu ovemvane, i-ZFA Valve itusa i-ductile iron. Akukona nje kuphela ukuthi yenza kahle, kodwa ama-valve e-butterfly yensimbi ye-ductile aphinde abonise ukuzinza okungavamile nokuzivumelanisa nezimo ezimweni eziyinkimbinkimbi nezishintshayo zokusebenza, ukunciphisa ngokuphumelelayo imvamisa yesondlo kanye nezindleko zokushintsha, okuholela ezindleko eziphakeme ngokuhamba kwesikhathi. Ngenxa yokuncipha kwesidingo sensimbi empunga, ama-valve uvemvane ensimbi ayayekwa kancane kancane. Ngokombono wezinto ezingavuthiwe, ukushoda kuya ngokuya kuba yigugu.