1. Mavavu apakhomo ndi okhalamo (monga madzi apampopi ndi ma valve a gasi)
Makanema: Madzi apampopi aukhondo, gasi (osawononga-wosawononga)
Zinthu zogwirira ntchito: Kuthamanga kochepa (kuchepera kapena kofanana ndi 1 MPa), kutentha kwa chipinda (-10 digiri mpaka 60 digiri)
zakuthupi: Mkuwa, chitsulo, pulasitiki (PPR, PVC)
Kutalika kwa moyo: zaka 10-20
Mavavu amkuwa (monga mavavu amkuwa) sachita dzimbiri kwambiri-ndipo amatha kupitilira zaka 20 akakonzedwa bwino.
Ma valve otayira achitsulo amatha kudzimbirira. Ngati madzi ali abwino (okhala ndi silt ndi zonyansa), amatha kumamatira kapena kudontha pakadutsa zaka 10.
Mavavu apulasitiki amakhudzidwa kwambiri ndi kutentha. Kuwonekera kwa dzuwa kwanthawi yayitali kapena kutentha kwambiri kumatha kufulumizitsa ukalamba, kufupikitsa moyo wawo wautumiki mpaka zaka 5-10.
2. Ma valve ogwirira ntchito m'mafakitale (monga madzi, nthunzi, mafuta)
Chapakatikati: madzi oyera, nthunzi yodzaza, mafuta amchere (otsika owononga)
Malo ogwirira ntchito: kuthamanga kwapakati ndi kutsika (1 ~ 10MPa), kutentha kwapakati (kuchepera kapena kufanana ndi 200)
Zida: chitsulo chosapanga dzimbiri (WCB), chitsulo chosapanga dzimbiri (304), chitsulo cha ductile
Kutalika kwa moyo: 8-15 zaka
Zisindikizo (monga mphira, polytetrafluoroethylene) amavala mbali. Ngati m'malo nthawi zonse, thupi la valve likhoza kupitilira zaka zoposa 15;
Mavavu a nthunzi amakonda kuvala chifukwa cha kusinthasintha pafupipafupi kwa kutentha ndi kuzizira, ndipo malo osindikizira amavalidwa mosavuta, ndipo nthawi ya moyo imatha kufupikitsidwa mpaka zaka 5-8.
3. Mavavu owononga / okhwima ogwirira ntchito (monga asidi, alkali, ndi sing'anga yokhala ndi tinthu tating'onoting'ono)
Chapakati: asidi ndi alkali solution, madzi a m'nyanja, matope, zimbudzi zamchenga
Zogwirira ntchito: zapakati komanso kuthamanga kwambiri (zochepera kapena zofanana ndi 20MPa), kutentha kwakukulu (200 ~ 400) kapena kutentha kochepa (kuchepera kapena kofanana ndi -20)
Zofunika: corrosion-resistainless stainless steel (316), Hastelloy, fluorine-lined (PTFE)
Kutalika kwa moyo: 3-10 zaka
Ngati sing'angayo ili ndi dzimbiri (monga hydrochloric acid, chlorine), ngakhale zitagwiritsidwa ntchito-zinthu zosamva dzimbiri, malo osindikizira ndi ma valve adzaonongeka pang'onopang'ono, ndipo moyo wautumiki ungakhale zaka 3~5 zokha;
Zapakati zomwe zimakhala ndi tinthu tating'onoting'ono (monga slurry, zimbudzi) zitha kuwononga mpando wa valve ndi pakati, kuthamangitsa kuvala, ndipo moyo wautumiki nthawi zambiri umakhala zaka 3-8.
4. Mavavu amphamvu-zakuthamanga kwambiri,{2}}kutentha kofunikira kwambiri (monga makina opangira magetsi,-mapaipi amphamvu kwambiri)
Zofalitsa: {{0}nthunzi yotentha kwambiri,{1}}mafuta otentha kwambiri,{2}}gasi wothamanga kwambiri
Kagwiritsidwe Ntchito: Kuthamanga kwambiri (Kuposa kapena kofanana ndi 10 MPa), kutentha kwakukulu (Kuposa kapena kofanana ndi madigiri 400)
Zida: Chitsulo cha aloyi (monga Cr-Mo chitsulo), chitsulo chosapanga dzimbiri
Kutalika kwa moyo: zaka 5-10
Kuvutika ndi-kupsyinjika kwanthawi yayitali, kukokoloka kwa media, komanso kuwonongeka kwa oxidative, ma valve cores ndi mipando zimatha kulephera ndipo zimafunika kuyang'aniridwa pafupipafupi (monga kuyezetsa ndi ultrasonic). Kutalika kwa moyo nthawi zambiri sikudutsa zaka 10.
Zinthu Zofunika Kwambiri:
Kusamalira: Kupaka mafuta nthawi zonse, kuyeretsa, ndi kusintha zosindikizira (monga, O-ring'ono, zopakira) zimatha kuwonjezera moyo wa mavavu ndi 30% -50%.
Kawirikawiri Kantchito: Mavavu omwe amatsegulidwa pafupipafupi komanso kutsekedwa (mwachitsanzo, kangapo patsiku) amawonongeka mwachangu pamalo osindikizira, zomwe zimapangitsa moyo kukhala waufupi ndi 50% kuposa ma valve omwe amagwiritsidwa ntchito mobwerezabwereza (kanthawi kochepa pamwezi).
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