#정수기피팅 #정수기개조부품 #I피팅 #암나사 #어탭터 #I피팅암나사어댑터 #NA005-64 #NA #3/8:1/4 #NPTF #water_purifier fitting # Water_purifier_parts #I-Fitting #Female_screw #Adapter #I-Fitting_Female_screw_Adapter