Ukungalungi kwe-rubber seal butterfly valve yukuthi uma isetshenziselwa ukudonsa, i-cavitation izokwenzeka ngenxa yokusetshenziswa okungalungile, okubangela ukuthi isihlalo senjoloba siphume futhi silimaze.Ngenxa yalesi sizathu, ama-valve butterfly avaliwe ngensimbi athuthukisiwe emhlabeni wonke, futhi indawo ye-cavitation incishisiwe.Eminyakeni yamuva nje, izwe lakithi liye lasungula namavalve uvemvane avaliwe ngensimbi.E-Japan, ama-butterfly ama-valve amise okwekamu anokumelana ne-cavitation, ukudlidliza okuphansi nomsindo ophansi nawo athuthukiswe eminyakeni yamuva.
Ngokuvamile, ukuphila kwesihlalo sokuvalwa kwevalve uvemvane yiminyaka eyi-15-20 yerabha kanye neminyaka engama-80-90 yensimbi ngaphansi kwezimo ezijwayelekile.Nokho, ukukhetha okulungile kuncike ezidingweni zezimo zokusebenza.
Ubudlelwano phakathi kwedigri yokuvula yevalve uvemvane evala uphawu kanye nenani lokugeleza kushintsha ngokuyisisekelo.Uma isetshenziselwa ukulawula ukugeleza, izici zayo zokugeleza nazo zihlobene eduze nokumelana nokugeleza kwamapayipi.Isibonelo, amapayipi amabili afakiwe anobubanzi obufanayo be-valve kanye nefomu, kodwa i-coefficient yokulahlekelwa kwepayipi ihlukile, futhi izinga lokugeleza kwe-valve nalo lizohluka kakhulu.Uma i-valve isesimweni esinobubanzi obukhulu be-throttle, ingemuva le-valve plate lithambekele ku-cavitation, okungase kulimaze i-valve.Ngokuvamile, isetshenziswa ngaphandle kuka-15 °.
Lapho ukulungiswa kovemvane lwe-metal seal kuphakathi nendawo, umumo wokuvula owenziwe umzimba we-valve kanye nengxenye engaphambili yepuleti uvemvane kugxilwe ku-valve shaft, futhi izinhlangothi ezimbili zakheka ukuqedela izifunda ezihlukene.Ingxenye engaphambili yepuleti uvemvane ngakolunye uhlangothi ihamba iye ngasemanzini agelezayo, kanti olunye uhlangothi lugeleza luhlehle.Ngakho-ke, uhlangothi olulodwa lomzimba we-valve kanye nepuleti ye-valve yenza ukuvuleka okufana ne-nozzle, kanti olunye uhlangothi lufana nokuvuleka kwe-throttle.Uhlangothi lwe-nozzle lunezinga lokugeleza elishesha kakhulu kunohlangothi lwe-throttle, futhi i-valve eseceleni ye-throttle izokhiqiza Ukucindezela okungekuhle, ama-rubber seal avame ukuwa.
I-torque esebenzayo yokulungiswa kwe-butterfly seal yensimbi inamanani ahlukene ngenxa yokuvula nokuvala indlela ye-valve ehlukene.I-valve ye-butterfly evundlile, ikakhulukazi i-valve ye-butterfly enobubanzi obukhulu, ngenxa yokujula kwamanzi, i-torque ekhiqizwa umehluko phakathi kwamakhanda amanzi angaphezulu naphansi we-valve shaft ayikwazi ukushaywa indiva.Ngaphezu kwalokho, lapho indololwane ifakwe ohlangothini lokungena lwe-valve, kwakheka ukugeleza kwe-bias futhi i-torque izokhula.Uma i-valve iphakathi nendawo, indlela yokusebenza idinga ukuzikhiya ngenxa yesenzo se-torque yokugeleza kwamanzi.

I-Nortech ingomunye wabakhiqizi abahamba phambili bamavalvu ezimbonini e-China abanesitifiketi sekhwalithi ye-ISO9001.

Imikhiqizo emikhulu:I-Butterfly Valve,I-Ball Valve,Ivalve yesango,Hlola Valve,I-Globe Vavlve,I-Y-Strainers,I-Acurator kagesi,Ama-Acurator Womoya.