Muma1930, thebutterfly valveyakagadzirwa muUnited States, uye muma1950, yakaunzwa kuJapan. Kunyange zvazvo isina kunyanya kushandiswa muJapan kusvika kuma1960, haina kunyatsozivikanwa pano kusvika kuma1970.

Hunhu hwakakosha hwevharuvhu yeshavishavi huremu hwayo, compact yekumisikidza tsoka, uye yakaderera inoshanda torque. Ivhavhavhavhavha inorema yakatenderedza 2T, nepo vharafu yegedhi inorema 3.5T, uchishandisa DN1000 semuenzaniso. Iyo butterfly valve ine nhanho yakasimba yekusimba uye yakavimbika uye iri nyore kubatanidza neakasiyana madhiraivha maitiro. Iyo drawback ye-rubber-sealed butterfly valve ndeyokuti, kana yakashandiswa zvisina kunaka sevhavha inoputika, cavitation ichaitika, zvichiita kuti chigaro cherubha chive uye chikuvare. Chisarudzo chakarurama, naizvozvo, chinoenderana nezvinodiwa nemamiriro ekushanda. Mwero wekuyerera unochinja chaizvo sekushanda kwekuvhurwa kwevharuvhu yeshavishavi.

Kana ikashandiswa kudzora kuyerera, hunhu hwayo hwekuyerera hunoenderana zvakanyanya nekuramba kuyerera kwepombi. Kuyerera kwemavharuvhu, semuenzaniso, kuchasiyana zvakanyanya kana mapaipi maviri akaiswa dhayamita imwechete yevharuvhu uye fomu, asi akasiyana pombi kurasikirwa coefficients. Cavitation ingangoitika kuseri kweplate yevharuvhu apo vharafu iri munzvimbo inorema yekukwenya, inogona kukuvadza vharafu. kazhinji inoshandiswa kunze pa15 °.

Thebutterfly valveinoumba chimiro chakaparadzana kana iri pakati pekuvhura kwayo, apo muromo weshavishavi ndiro nemuviri wevharuvhu zviri pakati nepakati pevharuvhu. Kunoperera ndiro imwe butterfly plate inofamba ichienda kudivi rimwe chete.

Nekuda kweizvozvo, muviri wevharuvhu kune rumwe rutivi uyevharafundiro inosanganisirwa kuita muromo wakafanana nemuromo, ukuwo rimwe divi richiita kunge throttle. Iyo rubber gasket yakavharwa. The butterfly valve's torque yekushandisa inosiyana zvichienderana nekuvhura uye kuvhara kwevharuvhu. Nekuda kwekudzika kwemvura, torque inogadzirwa nemusiyano pakati pepamusoro uye yakadzika misoro yemvura yevhavha shaft haigone kuregererwa kune horizontal butterfly valves, kunyanya mavharuvhu makuru-diameter.

Pamusoro pezvo, kuyerera kwe bias kuchaumba uye torque ichasimuka kana gokora rakaiswa padivi rekupinda mukati mevhavha. Nekuda kwekuita kweiyo torque yekuyerera kwemvura kana vharuvhu iri pakati pekuvhura, iyo nzira yekushanda inofanirwa kunge ichizvivharira.