Brass free flow valve nrog dej ntws tau DVGW pom zoo txog DN50. Tau txais qhov kev pom zoo no yog qhov nyuaj me ntsis.
Kev ua lag luam rau li qub tau nce ntxiv nrog kev txuas ntxiv ntawm kev thauj mus los thiab kev faib tawm. Dawb ntws li qub (Qhib li qub) yog ib qho kev xaiv zoo rau kev lag luam uas yuav tsum tau muaj kev tswj xyuas kom meej thiab kaw cov xov xwm ntws. Lawv yog cov kev daws teeb meem zoo tshaj plaws rau kev faib ua feem lossis qhib / tawm ntws tswj cov khoom siv fiber ntau, corrosive, thiab abrasive.
