Wafer Butterfly Valve na Gearbobx
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Wafer urukurubụba valvụ nwere gearbobx
GỤKWUOWafer urukurubụba valvụ nwere igbe worm gear.A na-eme irighiri nke ductile iron QT500-7 na ogwe aka irighiri, jikọtara ya na nhazi nhazi dị elu, nwere njirimara nke nguzogide eyi na oke nnyefe dị elu.