Hydraulic Ram Pumps

A Hydraulic Ram Pump (Hydram) is an automatic pumping device which uses the pressure from the fall of water in-order to lift the water to a greater height. It does not require any of the conventional energy sources such as electricity or fossil fuel for its operation. With the cooperation of BORDA, LEDeG has implemented 63 hydraulic ram pump projects in Ladakh from 1993 till date.

What is Hydraulic Ram Pump?
A Hydraulic Ram Pump, popularly known as a Hydram, is an automatic pumping device to lift the water to greater heights mainly to irrigate agriculture lands or for drinking purpose.

How it works
The Hydraulic Ram pumps with the energy from high velocity water which is suddenly blocked by a valve (the ball). This blocking causes an impulse which presses the water up in a second champer.

Hydraulic Ram Animation Step by step

  1. Look at the ball when it is in the lower position
  2. Water flows in with a high velocity at “water in”
  3. The water flows out at “waste water” but at the same time it pushes the ball up the curve
  4. When the ball hits the top point it blocks the water flow and a short impulse is build up behind the ball
  5. The impulse presses a little amount of water through the one-way-valve at very high pressure
  6. The impulse is very short and as air can be compressed very fast the air champer act as an energy buffer
  7. The one-way-valve closes again
  8. The air pressure pumps the water out at “water out”
  9. The ball was forced up by the water flow but as the flow stopped it rolls back to the lower position
  10. The cycle begins again

The cycle duration is between 1 and 2 seconds.


Photos of activity:

The LEDeG Hydram brochure
The capacity of any ideal Hydram