Vacuum Test Of Fire Hose

Qhov ntev ntawm cov yeeb nkab seem xeem yog (500 ± 50) mm. Siv cov kev ntsuas tsim nyog los thaiv qhov nkag thiab qhov hluav taws xob ntawm cov yeeb nkab, maj mam nce qhov tsis zoo ntawm qhov nkag mus rau 660 mm Hg, thiab khaws cia rau 1 min. Tom qab qhov kev xeem, xyuas cov txheej txheem sab hauv. Cov txiaj ntsig kev xeem yuav tsum ua raws li 5.10 Cov Cai.