1. Amavalvu asendlini kanye nezindawo zokuhlala (njengamanzi ampompi namavalvu egesi)
Imidiya: Amanzi kampompi ahlanzekile, igesi yemvelo (engagqwali-)
Izimo zokusebenza: Ingcindezi ephansi (Ngaphansi noma ilingana no-1 MPa), izinga lokushisa legumbi (-10℃kuya ku-60 degree)
Material: Ithusi, insimbi, ipulasitiki (PPR, PVC)
Ukuphila: iminyaka engu-10-20
Amavalvu ethusi (njengama-brass ball valves) ayakwazi ukugqwala-okunamandla futhi angahlala iminyaka engaphezu kwengu-20 ngokulungiswa okufanele.
Ama-valve ensimbi ajwayele ukugqwala. Uma izinga lamanzi liphansi (eliqukethe udaka nokungcola), angase abhajwe noma avuze ngemva kweminyaka eyi-10.
Ama-valve epulasitiki athinteka kakhulu izinga lokushisa. Ukuchayeka isikhathi eside elangeni eliqondile noma amazinga okushisa aphezulu kungase kusheshise ukuguga, kufinyeze impilo yabo yesevisi ibe iminyaka engu-5-10.
2. Amavalvu esimo sokusebenza esijwayelekile sezimboni (njengamanzi, isitimu, amasistimu kawoyela)
Okuphakathi: amanzi ahlanzekile, isitimu esigcwele, uwoyela wamaminerali (okugqwala okuphansi)
Izimo zokusebenza: ingcindezi ephakathi nendawo nephansi (1~10MPa), izinga lokushisa eliphakathi (Ngaphansi noma elilingana no-200)
Material: cast steel (WCB), insimbi engagqwali (304), ductile iron
Isikhathi sokuphila: iminyaka engu-8-15
Izimpawu (njengerabha, i-polytetrafluoroethylene) zigqoke izingxenye. Uma ushintshwa njalo, umzimba we-valve unganwetshwa iminyaka engaphezu kwe-15;
Ama-valve e-steam ajwayele ukugqokwa ngenxa yokushintshana kaningi kokushisa nokubanda, futhi indawo yokuvala igqokwa kalula, futhi isikhathi sokuphila singafinyezwa sibe iminyaka engu-5–8.
3. Amavalvu esimo sokusebenza agqwalile/alukhuni (njenge-asidi, i-alkali, nezinhlayiya eziqukethe okuphakathi)
Okumaphakathi: isisombululo se-asidi ne-alkali, amanzi olwandle, udaka, indle enesihlabathi
Izimo zokusebenza: umfutho ophakathi nendawo nophezulu (Ngaphansi noma olingana no-20MPa), izinga lokushisa eliphezulu (200~400) noma izinga lokushisa eliphansi (Ngaphansi noma elilingana no -20)
Okubalulekile: i-corrosion-resistant stainless steel (316), Hastelloy, fluorine-lined (PTFE)
Isikhathi sokuphila: 3 ~ 10 iminyaka
Uma okuphakathi kugqwala kakhulu (okufana ne-hydrochloric acid, i-chlorine), ngisho noma kusetshenziswa izinto ezikwazi ukumelana nokugqwala, indawo yokuvala kanye ne-valve izogqwala kancane kancane, futhi impilo yesevisi ingase ibe iminyaka engu-3~5 kuphela;
Izinhlayiya eziqukethe okumaphakathi (ezifana nodaka, indle) zizoguguleka isihlalo se-valve nomongo wevalvu, zisheshise ukuguga, futhi impilo yesevisi ngokuvamile iyiminyaka engu-3~8.
4. Amavalvu emibandela yesevisi-phezulu, ephezulu{2}}yezinga lokushisa eliphezulu (isb., izimboni zamandla kagesi,{5}}amapayipi amakhemikhali anomfutho ophezulu)
Imidiya:{0}Isimusi somfutho ophezulu,{1}}uwoyela oshisayo wezinga lokushisa eliphezulu,{2}}igesi yomfutho ophezulu
Izimo zokusebenza: Ukucindezela okuphezulu (Kukhulu noma kulingane no-10 MPa), izinga lokushisa eliphezulu (Kukhulu noma kulingana namadigri angu-400)
I-Material: I-alloy structural steel (isb., i-Cr-Mo steel), insimbi engagqwali ekhuniwe
Ukuphila: iminyaka engu-5-10
Uhlushwa-ingcindezi yesikhathi eside, ukuguguleka kwemidiya, nokugqwala kwe-oxidative, ama-valve cores nezihlalo kusengozini yokwehluleka futhi kudinga ukuhlolwa njalo (isb, ukuhlolwa kwe-ultrasonic). Isikhathi sokuphila ngokuvamile asidluli iminyaka eyi-10.
Izici Eziyinhloko Ezinomthelela:
Ukunakekela: Ukugcotshwa okuvamile, ukuhlanzwa, nokushintshwa kwezigxivizo (isb., O-amaringi, ukupakisha) kunganweba ukuphila kwamavalvu ngo-30% -50%.
Imvamisa Yokusebenza: Amavalvu avame ukuvulwa futhi avalwe (isb, inqwaba yezikhathi ngosuku) abhekana nokuguga okusheshayo ezindaweni ezivalayo, okuholela ekuphileni okufushane okungenani ngo-50% kunamavalvu asetshenziswa kancane (izikhathi ezimbalwa ngenyanga).
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