Valavu yamagetsi ya pulasitiki imatha kutsekedwa bwino pokhapokha ngati yazunguliridwa ndi madigiri 90 ndi mphamvu yaying'ono yozungulira. Mphepete mwa thupi la valavu muli mphamvu yofanana ya mkati mwa thupi la valavu ndipo imapereka mphamvu yocheperako komanso njira yolunjika ya sing'anga.
Kawirikawiri amaonedwa kuti valavu ya mpira ndi yoyenera kwambiri kutsegula ndi kutseka mwachindunji, koma zomwe zachitika posachedwapa zapanga valavu ya mpira kuti igwire bwino ntchito komanso kuwongolera kayendedwe ka madzi. Chinthu chachikulu cha valavu ya mpira ndi kapangidwe kake kakang'ono, kosavuta kugwiritsa ntchito komanso kukonza, koyenera madzi, zosungunulira, asidi ndi gasi wachilengedwe ndi zinthu zina zogwirira ntchito, komanso koyenera pa zinthu zosagwira bwino ntchito monga mpweya, hydrogen peroxide, methane ndi ethylene. Thupi la valavu ya mpira likhoza kukhala logwirizana kapena losakanikirana.
Valavu ya mpira yagwiritsidwa ntchito kwambiri mu mafuta, mankhwala, mpweya wosungunuka, madzi ndi ngalande, chakudya, mankhwala, kupanga magetsi, kupanga mapepala, zomangamanga m'mizinda, mchere, makina a nthunzi ya boiler, ma municipalities, mphamvu ya atomiki, ndege, ma rocket ndi madipatimenti ena, komanso moyo watsiku ndi tsiku wa anthu.
Valavu yamagetsi ya pulasitiki yapangidwa kuchokera ku valavu yolumikizira. Ili ndi mphamvu yofanana yokweza ma 90 degrees, kusiyana kwake ndikuti thupi la cock ndi mpira, wokhala ndi dzenje lozungulira kapena njira kudzera mu mzere wake. Chiŵerengero cha pamwamba pa denga ndi doko la chiteshi chiyenera kukhala chakuti mpira ukazungulira ma 90 degrees, cholowera ndi chotulukira zonse ziyenera kukhala zozungulira, kuti zichepetse kuyenda kwa madzi.
Valavu yamagetsi ya pulasitiki imatha kutsekedwa bwino pokhapokha ngati yazunguliridwa ndi madigiri 90 ndi mphamvu yaying'ono yozungulira. Mphepete mwa thupi la valavu muli mphamvu yofanana ya mkati mwa thupi la valavu ndipo imapereka mphamvu yocheperako komanso njira yolunjika ya sing'anga.
Kawirikawiri amaona kuti valavu ya mpira ndi yoyenera kwambiri kutsegula ndi kutseka mwachindunji, koma zomwe zachitika posachedwapa zapanga valavu ya mpira kuti igwire bwino ntchito komanso kuwongolera kayendedwe ka madzi. Chinthu chachikulu cha valavu ya mpira ndi kapangidwe kake kakang'ono, kosavuta kugwiritsa ntchito komanso kukonza, koyenera madzi, zosungunulira, asidi ndi gasi wachilengedwe ndi zinthu zina zogwirira ntchito, komanso koyeneranso pa zinthu zogwirira ntchito zoipa, monga mpweya, hydrogen peroxide, methane ndi ethylene.
Thupi la valavu ya mpira likhoza kukhala logwirizana kapena lophatikizana. Mfundo yogwirira ntchito komanso ntchito yothandiza ya valavu yamagetsi ya pulasitiki, mfundo yogwirira ntchito ya valavu ya mpira ndikupangitsa valavu kutseguka kapena kutsekedwa pozungulira valavu.
Chosinthira cha ball valve, kukula kwake kakang'ono, chingapangidwe kukhala mainchesi akulu, kusindikiza kodalirika, kapangidwe kosavuta, kukonza kosavuta, kusindikiza pamwamba ndi malo ozungulira nthawi zambiri zimatsekedwa, sizosavuta kuwononga ndi sing'anga, chimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana.
Valavu yamagetsi ya pulasitiki ndi valavu yolumikizira ndi ya mtundu womwewo wa valavu, gawo lake lotseka ndi mpira, ndipo mpirawo umazungulira mzere wapakati wa thupi la valavu kuti utsegule ndikutseka valavu. Valavu yamagetsi imagwiritsidwa ntchito makamaka kudula, kugawa ndikusintha njira yoyendera ya sing'anga mupayipi. Valavu yamagetsi ya pulasitiki ndi mtundu watsopano wa valavu womwe umagwiritsidwa ntchito kwambiri m'zaka zaposachedwa.
Ili ndi ubwino wotsatira:
1. Kukana pang'ono kwa madzimadzi, kukana kwake kofanana ndi kutalika komweko kwa gawo la chitoliro.
2. Kapangidwe kosavuta, voliyumu yaying'ono komanso kulemera kopepuka.
3. Ndi yolimba komanso yodalirika. Pakadali pano, pamwamba pa valavu yotsekerapo yapangidwa ndi pulasitiki yokhala ndi magwiridwe antchito abwino otsekera, ndipo yakhala ikugwiritsidwa ntchito kwambiri mu vacuum system.
4. Kugwiritsa ntchito kosavuta, kutsegula ndi kutseka mwachangu, kuyambira kutsegula kwathunthu mpaka kutseka kwathunthu mpaka kuzungulira kwa 90 °, kosavuta kugwiritsa ntchito patali.
5. Kukonza kosavuta, kapangidwe kosavuta ka valavu ya mpira, mphete yosindikizira yosunthika, kusokoneza mosavuta ndikusintha.
6. Vavu ikatsegulidwa kapena kutsekedwa kwathunthu, pamwamba pa chitseko cha mpira ndi mpando wa valavu zimachotsedwa pa sing'anga, ndipo sing'angayo sidzayambitsa kuwonongeka kwa pamwamba pa chitseko cha valavu.
7. Kugwiritsa ntchito mosiyanasiyana, kuyambira pa mamilimita ang'onoang'ono mpaka angapo, mpaka mamita angapo, kuyambira pa vacuum yochuluka mpaka kuthamanga kwambiri kungagwiritsidwe ntchito.
Valavu ya mpira imagwiritsidwa ntchito makamaka polumikiza kapena kutseka njira yolumikizira mapaipi, makamaka m'zigawo zomwe zimafuna kutsegula ndi kutseka mwachangu, monga kutsitsa zinthu mwadzidzidzi. Chifukwa cha kapangidwe kake kosavuta, zigawo zochepa, kulemera kopepuka komanso magwiridwe antchito abwino otsekera, imagwiritsidwa ntchito kwambiri.
Nthawi yotumizira: Feb-16-2023
