TheDual farantin duba bawul waferbawul ɗin da ba a dawo da shi ba ne wanda ya fi ƙarfi, mai sauƙi a nauyi da ƙarami a girman idan aka kwatanta da bawul ɗin dubawa na al'ada ko bawul ɗin duba rayuwa.ityana ɗaukar nau'ikan faranti guda biyu masu ɗorewa masu rataye akan filin hinge na tsakiya.Lokacin da kwarara ya ragu, faranti suna kusa da aikin bazara na torsion ba tare da buƙatar juyawa baya ba.Wannan ƙirar tana ba da fa'idodin tagwayen No Water Hammer da Non Slam a lokaci guda.Duk abubuwan da aka haɗa tare suna sanya Dual Plate Check Valve ɗayan mafi kyawun ƙira.

muna daDual farantin duba bawul wafertare da ban mamaki sealing yi, amma shi ne kawai ga low matsa lamba da kuma al'ada zafin jiki, saboda iyaka na rubbers' halaye.