All plastic variable-area flow meters such as PFA/PVC are available for applications using strong acids and alkalis. FM-PF(Reasonable type) Catalog FM-PF(Custom type) Catalog FM-PF(Excel type) Catalog DUO-PF Catalog FC-A(PVC type) Catalog For Chemicals / DI water Flow controllerFlow control valveUltrasonic flow meterVortex flow meterPaddle wheel flow meterVariable-area flow meter