sand-washer

In the pumping station, there are three centrifugal pumps, which are directly connected to tandem compound engines; two sand-washer pumps; three small electric generating sets for furnishing electric light; and four 200-h. p., water-tube boilers.

Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 Water Purification Plant, Washington, D. C. Results of Operation. E. D. Hardy

Each of the centrifugal pumps has a nominal capacity of 40,000,000 gal. per day when pumping against a head of 21 ft., and each sand-washer pump has a capacity of 2,500,000 gal. when pumping against a head of 250 ft.

Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 Water Purification Plant, Washington, D. C. Results of Operation. E. D. Hardy