Duplex Pumping Engine, Belmont Works A view of the Duplex Pumping Engine at the Belmont Works. Landscape ChangesSewers & DrainageStreams & RiversWater Supply Item Type ImagePhotograph Publisher Philadelphia Water Department Topics Landscape ChangesSewers & DrainageStreams & RiversWater Supply Subjects EngineeringInfrastructurePumping EnginesPumping StationsWater Supply Keyword Belmont Water Filtration Plant (Belmont Works) Temporal Coverage 1850-1900 Format (Medium) Photograph File Size817 kbImage Dimensions2560 x 1913 px Identifier2004.057.0074.002 Collection Philadelphia Water Department Rights Holder Philadelphia Water Department