EntityQ332934· pop 22· linked from 197 articlesbutterfly valveSign in to saveflow control deviceConnectionsJapanCountryWorld War IIConceptmetalEntitypressureEntitypower stationEntityhydroelectricityEntitydiskEntityvalveEntityfluid dynamicsEntitynatural rubberEntityactuatorEntitypound per square inchEntitycheck valveEntityflangeEntitythrottleEntitygate valveEntityball valveEntitycontrol valvesEntityglobe valveEntityplastic pipeEntityCategoriesPlumbing valvesValves