Kutshanje, siphuhlise ivalve yebhabhathane ye-bi-directional yabathengi baseJapan, indawo ephakathi ijikeleza amanzi okupholisa, ubushushu + 5 ℃.

Umthengi ekuqaleni wayesebenzisa ivalve yebhabhathane ye-unidirectional, kodwa kukho iindawo ezininzi ezifuna ngokwenene ivelufa yebhabhathane ene-bi-directional, ngoko ke umthengi wethu usicele ukuba siphinde sinikeze isivalo sebhabhathane esinamabhabhathane e-bi-directional kwezi zikhundla ngaphandle kokutshintsha ubuso ngobuso.

Emva kwengxoxo yesebe lobuchwephesha be-THT, sigqibe kwelokuba sisebenzise ukubumba kokutywina kwasekuqaleni kwe-unidirectional ukusetyenzwa kwevalve yebhabhathane yokutywina.Ngenxa yoko, siye saphumelela, i-PN25 yoxinzelelo oluhle emva koxinzelelo 1:1.