Lub valve yog ib qho kev tswj xyuas nyob rau hauv cov kua conveying system, uas muaj lub luag hauj lwm ntawm kev txiav -tawm, kev tswj, kev hloov, kev tiv thaiv ntawm backflow, voltage stabilization, hloov los yog overflow thiab siab nyem. Valves siv hauv cov tshuab tswj dej, los ntawm qhov yooj yim tshaj plaws kaw- tawm valve mus rau ntau yam li qub siv hauv cov tshuab tswj tsis siv neeg tsis zoo, muaj ntau yam thiab cov lus qhia tshwj xeeb.
