Lok ikom ngec ikom gin ma ki lwongo ni Butterfly valve

I mwaka 30s,butterfly valveki yubu i lobo Amerika, ki kelo i Japan i mwaka 50s, ki ki tiyo kwede i Japan i mwaka 60s, ki ki medo i China inge mwaka 70s. I kare ni, jami ma ki lwongo ni butterfly valves ma tye malo DN300 mm i wilobo dong gu loko jami ma ki lwongo ni gate valves. Ka kiporo kidul ma ki lwongo ni gate valves, butterfly valves tye ki kare manok me yabo ki cego, tic manok, kabedo manok me keto ki pek ne yot. Kwanyo DN1000 ma calo labol, gin ma ki lwongo ni butterfly valve tye 2T, ki gate valve tye 3.5T, ki butterfly valve ni yot me ribbe ki jami ma pat pat, ki tek maber ki genne.

Peko pa gin ma ki lwongo ni rubber sealbutterfly valveni ka kitiyo kwede me juku yamo, cavitation obi time pi tic kwede marac, ma obi weko kom ma ki yubu ki moo ni obale woko. I mwaka manok ma okato ni, China bene oyubu jami ma ki lwongo ni metal sealed butterfly valves, ki i mwaka manok ma okato ni, Japan bene oyubu jami ma ki lwongo ni comb-shaped butterfly valves ma twero juku pii, yeng yeng manok ki koko manok.

kwo pa kom ma ki umu ni tye mwaka 15-20 pi rubber ki mwaka 80-90 pi nyonyo i te cik ma opore. Ento, kit me yero maber cung i kom gin ma mite pi kit me tic.

Wat ma tye i kin yabobutterfly valveki rwom me mol pa pii ni tye ma rwate ki rwate. Ka kitiyo kwede me doro rwom me mol pa pii, kit ma pii mol kwede bene rwate ki rwom me mol pa paip, ma calo lac ki kit ma valve ma ki keto i paip aryo ni rom, ki rwom me rweny pa paip ni pat, ki rwom me mol pa valve ni obi bedo pat pat.

Ka valve ni tye i rwom me throttling madit, angec pa valve plate ni twero bedo ki cavitation, ki tye gin ma twero balo valve ni, ki pol kare ki tiyo kwede i 15°.

Ka dul ma ki lwongo ni butterfly valve tye i dyere, dul ma ki yabo ni ki yubu kivalvekom ki agiki me anyim pa gin ma ki lwongo ni butterfly plate ni tye i kin dul kom ma ki lwongo ni valve shaft, ki dul aryo ni gi yubu kit ma pat pat, agiki me butterfly plate ni tung acel woto ki tung pii ma tye ka mol, ki tung mukene ni woto i kom pii ma tye ka mol, pi meno, kom valve ni tye tung acel ki valve plate ni pe yubu valle- ki oyabe ma rom ki tung mukene ni throttle hole-shaped opening, nozzle side tye ma oyot loyo throttle side, ki teko marac obi bedo i te throttle side valve, ki rubber seal pol kare poto piny.

Teko ma tiyo pa butterfly valve, pi yabo ki yoo ma pat pat me yabo valve, wel ne pat, ki horizontal butterfly valve, tutwale valve ma dit, pi dit pa pii, torque ma aa ki i apoka poka ma tye i kin wic ma malo ki ma piny pa valve ni pe kitwero cayo ne. Medo ikom meno, ka ki keto cing i kom donyo pa valve, deflection flow bedo tye, ki torque mede. Ka valve ni tye i dyere, gin ma tiiyo kwede omyera obed ma ocung kene pi tic pa pii ma mol.