AWWA C504 butterfly valve e lua ituaiga, faʻamaufaʻailoga vaivai laina laina ma faʻamaufaʻailoga vaivai faʻalua, e masani lava, o le tau o le faʻamaufaʻailoga vaivai o le a sili atu le taugofie nai lo le faʻamaufaʻailoga lua, ioe, e masani lava ona faia e tusa ai ma manaʻoga o tagata faʻatau.E masani lava o le mamafa galue mo AWWA C504 e 125psi, 150psi, 250psi, fua fa'atatau o le fa'afeso'ota'i flange o CL125,CL150,CL250.