COMMERCIAL ITEM DESCRIPTION
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1. SCOPE. This commercial item description (CID) covers two types of horizontally mounted,
electric-motor- or steam-turbine-driven, general service and boiler-feed centrifugal water pump
units, with capacities ranging from 5 gallons per minute (gpm) to 15,000 gpm (0.32 litre per
second (L/s) to 945 L/s) for total dynamic heads ranging from 10 to 2,500 feet
(3 to 760 metre (m)).

2. CLASSIFICATION. The pumps are of the following types, styles, and classes, as specified
(see 7.3):
Types
Type I - General service.
Type II - Boiler-feed.
Styles
Style 1 - Axially split casing.
Style 2 - End suction (on base plate).
Style 3 - End suction (close coupled).
Style 4 - Radially split casing.



SALIENT CHARACTERISTICS.
3.1 Description. The pumps shall be horizontally mounted centrifugal pumps and shall be
equipped with direct-connected pump drivers. The pump driver shall be an electric motor or a
steam turbine, as specified. Each pump and its driver, except for close-coupled pumps, shall be
connected by means of a flexible shaft coupling and mounted on a common bedplate. Each pump
shall be equipped with all connecting lines and accessories required for proper operation. When
specified (see 7.3), auxiliary priming devices or systems shall be furnished. Details of the priming
devices or systems shall be as specified (see 7.3).