Mu msonkhano wa Jinbin, gulu la ma valve agulugufe osindikizidwa mwamphamvu atatu-eccentric atsala pang'ono kutumizidwa, kukula kwake kuyambira DN65 mpaka DN400. Zosindikizidwa zolimbaatatu eccentric butterfly valvendi valavu yotseka yogwira ntchito kwambiri. Ndi mapangidwe ake apadera komanso mfundo zogwirira ntchito, imakhala ndi udindo wofunikira m'mafakitale ambiri. Mapangidwe ake "atatu eccentricities" ndiye chowunikira chachikulu: thechosindikizira cholimba cha butterfly valvetsinde axis apatuka onse pakati pa gulugufe mbale ndi pakati pa valavu thupi, ndipo nthawi yomweyo, pakati pa kusindikiza pamwamba conical ali ndi ngodya ina eccentricity wachibale pakati pa payipi.

Kapangidwe kameneka kamaphwanya lamulo la kayendedwe ka mavavu agulugufe. Vavu ikatsegulidwa, mbale yagulugufe ndi mpando wa valve zimachotsedwa nthawi yomweyo. Pa kutseka ndondomeko, gulugufe mbale pang'onopang'ono kuyandikira mpando valavu, ndipo potsiriza amakwaniritsa kusindikiza mwa kufinya onse zotanuka kapena zitsulo kusindikiza awiriawiri. Kapangidwe kameneka kameneka kumapewa kukangana pakati pa mbale yagulugufe ndi mpando wa valve panthawi yotsegula ndi kutseka, kumatalikitsa kwambiri moyo wautumiki wa awiriwo osindikizira, ndipo nthawi yomweyo amachepetsa mphamvu yogwiritsira ntchito, kupangitsa kutsegula ndi kutseka kwa valve kukhala kosavuta komanso kosavuta.

Poyerekeza ndi mitundu ina ya mavavu, flanged hard Seal butterfly valves ali ndi ubwino waukulu. Choyamba, ili ndi ntchito yabwino yosindikiza. Chitsulo chosindikizira cholimba chimatha kutulutsa zero ndikupirira zovuta zofika pa 1.6MPa - 10MPa, kukwaniritsa zofunikira zamitundu yosiyanasiyana yogwirira ntchito. Kachiwiri, imakhala ndi mphamvu yovala komanso kukana dzimbiri. Zimapangidwa ndi zida zapadera zolimba kapena zitsulo zosapanga dzimbiri ndipo zimatha kugwirabe ntchito mokhazikika m'malo ovuta monga kutentha kwambiri, kuthamanga kwambiri komanso dzimbiri lamphamvu. Chachitatu, ili ndi moyo wautali wautumiki. Chifukwa cha kuchepa kwa kuvala pakati pa zigawo zikuluzikulu, moyo wake wautumiki ukhoza kupitirira zaka 10 pansi pazikhalidwe zogwirira ntchito, ndikuchepetsa kwambiri mtengo wokonza. Chachinayi, ndi yosavuta kugwiritsa ntchito ndipo imatha kuyendetsedwa m'njira zosiyanasiyana monga buku, magetsi ndi pneumatic, kukwaniritsa zofunikira zodzilamulira zokha pazochitika zosiyanasiyana.

Muzochita zenizeni, valavu yagulugufe yolimba yosindikizidwa katatu imagwiritsidwa ntchito kwambiri m'mafakitale angapo. M'munda wa petrochemicals, amagwiritsidwa ntchito poyang'anira kayendetsedwe kazinthu monga mafuta, gasi lachilengedwe ndi zipangizo zamagetsi; M'makampani amagetsi, kutuluka kwa zofalitsa monga nthunzi ndi madzi ozizira kungathe kusinthidwa kuti zitsimikizidwe kuti zida zopangira magetsi zikugwira ntchito mokhazikika. M'makampani opanga zitsulo, amagwiritsidwa ntchito pamapaipi amtundu wa media monga blast furnace gas, oxygen, ndi nitrogen. M'mapulojekiti operekera madzi ndi ngalande, nthawi zambiri amagwiritsidwa ntchito podula mapaipi ndi kayendetsedwe ka kayendetsedwe ka madzi m'matauni ndi machitidwe ochotsa zimbudzi.

Pankhani ya media yogwiritsidwa ntchito, valavu yagulugufe yamtundu wachitatu wa China imakhala yogwirizana kwambiri. Pankhani ya gasi TV, angagwiritsidwe ntchito gasi, malasha gasi, mpweya, nayitrogeni, nthunzi, etc. Pankhani ya madzi TV, akhoza kusamalira mafuta, mankhwala njira, zonyansa, madzi a m'nyanja, etc. Komanso, kwa ena mpweya olimba kapena madzi-olimba TV osakaniza munali particles ndi fumbi, valavu izi angathenso kuwagwira bwino amazolowera, kusonyeza.