Vavu yoyimitsa ndi valavu yotchinga, yomwe imathandizira kwambiri kudula mapaipi.
Thevalavu ya globendi valavu yogwiritsidwa ntchito kwambiri, komanso ndi mawonekedwe abwino kwambiri opondereza.Chifukwa imakhala ndi magwiridwe antchito abwino, komanso poyerekeza ndi mitundu ina ya mavavu, kugawa kwa ma valve kuzungulira mpando woyimitsa chifukwa cha kukokoloka kumakhala kofanana.
Vavu yapadziko lonse lapansi ndi valavu yosindikiza mokakamiza.Chifukwa chake, momwe mungasankhire bwino valavu yapadziko lonse lapansi iyenera kuyika chiwongolero pakuyaluka kwakukulu ikatsekedwa, kuti pasakhale kutayikira komwe kumachitika pakati pa malo awiri osindikizira.Popeza mphamvu yosindikiza ya valavu yapadziko lonse lapansi ndi kuthamanga kwapakati kuli pamtunda womwewo, ndipo mayendedwe amatsutsana, mphamvu yosindikizira sikuti imangokulirakulira, komanso imagonjetsa kupanikizika kwa sing'anga, kotero mphamvu yosindikiza yomwe imafunidwa ndi dziko lapansi. valavu ya valve ndi yaikulu kwambiri kuposa ya valve yachipata.
Chisamaliro chapadera chiyenera kuperekedwa pakusankhidwa kwa valve ya globe.Vavu yapadziko lonse yokhala ndi mphete yosindikizira yathyathyathya singagwiritsidwe ntchito pazambiri zonyansa kapena media zomwe zili ndi tinthu tolimba.Mu sing'anga iyi, ndi koyenera kugwiritsa ntchito malo osindikizira a tapered kuti asindikize.
Nthawi zambiri, ma valve odulidwa amalimbikitsidwa kuti aziwongolera, kuwongolera, komanso kachitidwe ka mapaipi amphamvu kwambiri;ma valve odulidwa amatha kusankhidwa kuti asinthe malo awiri, kuwala ndi zofunikira zazing'ono, palibe zofunikira zokhwima pa kutalika kwa mapangidwe, kutsika kwapakati (kusiyana kwapang'onopang'ono), ndi zofalitsa zotentha kwambiri.;M'matope, sing'anga yomwe ili ndi tinthu tating'ono ta thupi lomwelo, kuvala kukana, kuchepa kwa m'mimba mwake, kuchitapo kanthu mwachangu (kutembenuka kwamitundu yambiri kapena kutseguka ndi kutseka), ndi mphamvu yochepa yogwiritsira ntchito, yesetsani kusankha valve yoyimitsa;pakufunika kusindikiza bwino, kuthamanga kwambiri (kusiyana kwakukulu kwapakati)), phokoso lochepa, cavitation ndi vaporization, kutayikira pang'ono kwa mlengalenga, abrasive media, kutentha kochepa komanso kuzizira kwambiri, mungagwiritse ntchito mapangidwe apadera. kapangidwe ka valve yapadziko lonse lapansi.
Chinthu china chofunika kwambiri cha valavu ya globe ndi chakuti chisindikizo cha tsinde la valve chikhoza kusinthidwa ndi mvuvu m'malo molongedza kuti apange valavu ya bellows globe.Valavu ya bellows globe ndiyoyenera kuyaka, kuphulika, poizoni, komanso media yoyera, ndipo imathanso kukwaniritsa zofunikira za vacuum system.
Komabe, valavu yapadziko lonse imakhalanso ndi zofooka zake, makamaka chifukwa cha mawonekedwe a mkati mwa thupi la valve.Pabowo la valavu yapadziko lonse lapansi, sing'anga imasintha kuchoka pakuyenda mowongoka kupita kumayendedwe okwera kapena otsika, kenako kupita kumayendedwe opingasa, zomwe zimapangitsa kutsika kwamphamvu, makamaka pazida zama hydraulic.Kutayika kotereku kuyenera kukopa chidwi chokwanira.