Automatic cone check valves, Springwells Station treatment plant during construction, Detroit water supply system
Grab
Description
View of automatic cone check valves during construction of the Springwells Station treatment plant, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Springwells Station. Check valves. Contract P.C. 49. Pit #6. Automatic cone check valves on pumps #16 & #18. No. 4. Date: 7-22-31. Photo by Manning Brothers."