Automatic cone and Larner-Johnson valves, Springwells Station treatment plant during construction, Detroit water supply system
Description:
View of Larner-Johnson 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 and Larner Johnson valves. No. 3. Date: 6-30-31. Photo by Manning Brothers."
