Cov yam ntxwv ntws ntawm cov tswj valve tsis tuaj yeem tsis quav ntsej. Cov yam ntxwv ntws ntawm cov tswj valve yog qhov siab dhau lawm. Ntev npaum li qhov hloov pauv me me, qhov nruab nrab hloov kho yuav muaj qhov hloov pauv ntau dua. Txawm hais tias tus maub los muaj qhov tso tawm me me, vim yog lub valve, qhov nruab nrab ntws yuav hloov pauv zoo heev, uas yuav ua rau muaj kev hloov pauv ntau dhau thiab ua rau lub zog tsis tu ncua ntawm tag nrho cov system. Rau cov xwm txheej saum toj no, yog tias cov yam ntxwv ntawm lub valve tsis tuaj yeem hloov kho, qhov sib npaug nce ntawm tus maub los tuaj yeem raug txo kom txhim kho kev tswj kom zoo.
