4 inch Hydraulic Ram pump (DK-Z420T)

4 inch hydraulic ram pump


Water hammer is a natural phenomenon. And the water pumps that created by water hammer have hundreds of years history. These pump devices can use the hydrodynamic force in low level to deliver high head water. As a tool of lifting with no consumption of electricity, oil and other traditional energy sources, it is very appropriate for the immigration and supply in mountain and semi-mountain areas with power shortage. And in areas with rich water resources, it can be used for power generation through water lift.

Derkor, with self-owned intellectual property right, is a new-type hydraulic ram pump invented by our company. Its lift efficiency is much higher and its property and status are more stable. Derkor can adjust hostile environment and bad conditions, and it can works without supervision and energy consumption for days and years. As a result, it is really environmental friendly and low carbon operation, leading to practical and profound significance of environment and energy.


  • Use of a renewable energy source, does not consume traditional fuel(petrol diesel and electricity), no pollution.

  • High efficiency and high lift, long life (more than 30 years service life).

  • Automatic, continuous operation requires no supervision.

  • Simplicity and reliability give a low maintenance requirement.


  • The irrigation of Mountain, semi-mountain, hilly country.

  • The irrigation of near reservoir, river, stream area.

  • Drinking water for people and livestock at mountain area.

  • Supply water for landscape and fountain.

  • By use of the hydraulic ram pump to store energy for power generation.

  • The greening of barren hills.


1Drive Pipe size4 inch
2Lifting pipe size2 inch
3Minimum Working Fall0.3meters
4Maximum Working Fall12meters
5Optimal Working Fall1.5-4meters
6Quantity of water supplied from the source (Q)15-25m3/h
7Maximum Lift80meters
8Optimal Lift20-30meters
9Drive pipe length(The best)6~8 times as much as Working fall
10Angle between drive pipe and ground(The best)About 7 ~ 10 degrees
12Package Size(L×W×H)0.65×0.31×1.64meters
13Net Weight90KG
14Gross weight130KG

Flow and Lift

Water lifting of the hydraulic ram pump depends on lots of factors,   such as the water height, the working fall, the water of drive pipe   needed, the angle between drive pipe and ground, and the lift etc. The   working fall is bigger and the lift is smaller, the carry water will be   more and more.

Notes: Ram Performance Data for a Supply (Q) of 15m3/h.
       F= Working fall (Meters)
       L= Lift (Meters)
       D= Delivered Water (m3/h)
2.5 4.532.    
5   4.532.  
10     4.532.

System Diagram

4 inch Hydraulic Ram pump, 4 inch Ram pump, 4 inch Hydraulic Ram

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