Non riising qia rooj vag valve, tseem hu ua rotary qia rooj vag valve, hais txog lub rooj vag valve qhov twg lub valve qia rotates thiab nws cov xov kis nyob rau hauv lub cev kab noj hniav. Lub threaded ib feem ntawm lub valve qia thiab kev sib cuag ntawm lub valve qia txiv ntseej thiab nruab nrab yog cuam tshuam los ntawm qhov kub thiab txias thiab corrosiveness ntawm nruab nrab, ua rau lawv haum rau tsis corrosive xov xwm thiab cov xwm txheej uas tsis zoo sab nraud ib puag ncig. Tsis tas li ntawd, piv rau qhov nce qia rooj vag valve, qhov siab qhov loj ntawm lub valve yog me me, tab sis nws qhov qhib thiab kaw stroke yog qhov nyuaj rau tswj, thiab qhov ntsuas yuav tsum tau ntxiv.
