Wec ikum ngec pa butterfly valve

I oro 30s,butterfly valvejuyike i ngom mi Amerika, jukelo i Japan i oro 50, man jutiyo kudu lee i Japan i oro 60, man juyike i China ingey oro 70. I kare eni, butterfly valves ma malu pa DN300 mm i ng'om zoo giloko gate valves. Ka juporo kuvalves mi dhugola, butterfly valves utiye ku kare manok mi yabo man cego, kero manok mi tic, kabedo manok mi ketho man pek ma yot. Ka wakwanu DN1000 calu lanyuth, butterfly valve utiye 2T, man gate valve utiye 3.5T, man butterfly valve utiye yot ni kethu ku jam tic matung tung, ku kero man gen.

Peko pa rubber sealbutterfly valveutiye nia ka jutiyo kudu pi throttling, cavitation biwok pi tic marac, ma biweko kom ma jutiyo kudu ku rubber utur man unyothere. I kind oro ma ukadhu, China de udaru yubu valves ma jugwoko ku cuma, man i oro ma ukadhu, Japan de udaru yubu valves ma nen calu comb ma copo juku pii, yeng yeng man dwand ma nok.

Kwo pa kom ma juketho i iye ubedo oro 15-20 pi rubber man oro 80-90 pi cuma i thenge maber. Ento, kite mi yero maber ucungo iwi lembe ma mitere pi tic.

Bedo ber pa yabo pabutterfly valveman kadhiri pa pii utiye linear man proportional. Ka jutiyo kudu pi jwigo rwom pa pii, kit pii pare de utiye ku winjiri ku rwom pa mol pa paip, calu lac man kit pa valve ma juketho i paip aryo gi rom, man pipeline loss coefficient utiye tung tung, man rwom pa mol pa valve bibedo tung tung.

Ka valve utiye i rwom ma malu mi throttling, ngeye pa valve plate utiye ku cavitation, man copo bedu ni valve copo nyotho, pieno jutiyo kudu woko pa 15°.

Ka butterfly valve utiye i kind dhugola, dhugola ma juyubu kuvalvekum man thenge ma kore pa butterfly plate utiye ikind valve shaft, man thenge aryo ne gibedo ku kit matung tung, thenge ma kore pa butterfly plate acel wotho i yo ma pii mol kudu, man thenge mange wotho i yo ma pii mol kudu, pi meno, kum valve i thenge acel man valve plate timo ngo valle- sizz, man thenge mange utiye marom throttle hole-shaped opening, the nozzle side is much faster than throttle side, and negative pressure will generated under throttle side valve, and rubber seal often off off.

Teko pa tic pa butterfly valve, pi yabo tung tung pa valve man yore mi yabo pa valve, wel pare ukoc, man horizontal butterfly valve, asaga valve ma diameter pare dit, pi thum pa pii, torque ma wok kud i tung tung pa wiye ma malu ku ma piny pa valve shaft copo bedu ma juweko ngo. Mi medo, ka juketho elbow i thenge mi donjo pa valve, deflection flow bedo nuti, man torque medre. Ka valve utiye i kind dhugola, yore mi tic ucikere ni bedo ma ucungo kende pi tic pa torque mi mol pa pii.