Tsis ntev los no, peb tau tsim ib tug bi-directional wafer npauj npaim valve rau Japanese cov neeg muas zaub, qhov nruab nrab yog circulating dej txias, kub + 5 ℃.

Cov neeg siv khoom qub siv unidirectional npauj npaim valve, tab sis muaj ntau txoj haujlwm uas xav tau tiag tiag xav tau ob-directional npauj npaim valve, yog li peb cov neeg siv khoom thov kom peb rov muab cov khoom siv ob-directional wafer npauj npaim valve hauv cov haujlwm no yam tsis hloov lub ntsej muag rau lub ntsej muag qhov ntev.

Tom qab THT technical department sib tham, peb txiav txim siab siv tus thawj unidirectional sealing pwm los ua cov txheej txheem ob-directional sealing npauj npaim valve. Yog li ntawd, peb ua tiav, PN25 zoo siab rov qab siab 1: 1.