The Hydraulic Ram: Pumping Water Uphill

The hydraulic ram made pumping water easy and inexpensive.

2. The water that has been flowing through the impulse valve has built up a large amount of momentum that must be dissipated. This so-called “water hammer” effect causes a sudden surge in pressure inside the pump body, forcing open the one-way delivery valve (also called the discharge valve) at (C).
Illustration By Sam Moore