-
Npauj npaim valve ua haujlwm txoj hauv paus
Npauj npaim valve yog ib hom ntawm valve uas siv disc hom qhib thiab kaw qhov chaw kom tig txog 90 ° kom qhib, kaw lossis tswj nruab nrab ntws. Npauj npaim valve tsis yog tsuas yog yooj yim hauv cov qauv, me me ntawm lub cev me me, lub teeb nyob hauv qhov hnyav, kev siv khoom tsawg, me me hauv kev teeb tsa loj, me me hauv kev tsav tsheb ...Nyeem ntxiv
