Water pump; W & B Douglas Midd. Connecticut U.S.A.; 1880's; 2008-04


Water pump

About this object

Large hydraulic water pump, uses the kinetic energy of water in a pipe to compress air in the dome. When the one valve shuts a second valve opens allowing the air pressure to push the water through a second pipe.The ram pump, as it was known, was made in various sizes. TATATM has a number of these pumps on display.


W & B Douglas Midd. Connecticut U.S.A.

Maker Role


Date Made


Place Made

United States of America

Medium and Materials

Cast steel

Subject and Association Description

Hydraulic water pump, called ram, originally used at Whangamomona to keep the water tank full for the railway steam engines. These pumps do not require any other motive power.

Credit Line

Gift to TATATM

Object Type

Water pump

Object number


Copyright Licence  

All rights reserved

Ken Pinkerton 20 Sep 2018 01:00 AM,UTC

The pump is missing a small valve on the side that goes up and down creating pressure inside the dome where, I believe a flap valves allows it to build up pressure and push water uphill, higher than the original water source. It uses a lot of water to pump water, but it requires no other power source.

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