hram:hydraulic_ram_pumps

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision		 Previous revision
hram:hydraulic_ram_pumps [2026/03/10 12:40] – external edit 127.0.0.1hram:hydraulic_ram_pumps [2026/03/26 18:33] (current) – external edit 127.0.0.1
Line 1: Line 1:
-# Hydraulic ram pumps+This topic is part of [[gt:gardening|Gardening, smallholding & farming]] and [[gt:water|Water & sewage]]. 
 +====== Hydraulic ram pumps ======
  
  
Line 10: Line 11:
  
  
-## What are hydraulic ram pumps?+===== What are hydraulic ram pumps? =====
  
 Called ‘hydrams’ for short, hydraulic ram pumps are self-powered water pumps that can be used to pump water to higher ground for irrigation, watering livestock or human use. The power for pumping comes from the flow of water via gravity to the pump, and doesn’t require a generator, electricity or even wind. Hyrdrams can lift water to ten times the height of the fall to it from the source of water. They operate continuously, 24 hours per day, 7 days per week. Called ‘hydrams’ for short, hydraulic ram pumps are self-powered water pumps that can be used to pump water to higher ground for irrigation, watering livestock or human use. The power for pumping comes from the flow of water via gravity to the pump, and doesn’t require a generator, electricity or even wind. Hyrdrams can lift water to ten times the height of the fall to it from the source of water. They operate continuously, 24 hours per day, 7 days per week.
-### How do they work?+==== How do they work? ====
  
 Hydrams turn the potential energy in a head of water into kinetic energy, then re-convert it to potential energy again, in the form of pressure that pushes the water uphill. This is a diagram of a typical set-up. Hydrams turn the potential energy in a head of water into kinetic energy, then re-convert it to potential energy again, in the form of pressure that pushes the water uphill. This is a diagram of a typical set-up.
Line 46: Line 47:
 </WRAP> </WRAP>
  
-### History+==== History ====
  
 Hydraulic ram pumps date back to the 18th century, with precursors developed in Britain, before one of the [Montgolfier brothers](https://en.wikipedia.org/wiki/Montgolfier_brothers) (of hot air balloon fame) invented the first true hydram in 1796. The original design hasn’t really changed very much at all. At around 60-80% efficiency, there’s not too much scope for improvement. Hydraulic ram pumps date back to the 18th century, with precursors developed in Britain, before one of the [Montgolfier brothers](https://en.wikipedia.org/wiki/Montgolfier_brothers) (of hot air balloon fame) invented the first true hydram in 1796. The original design hasn’t really changed very much at all. At around 60-80% efficiency, there’s not too much scope for improvement.
Line 67: Line 68:
  
  
-## What are the benefits of hydraulic ram pumps?+===== What are the benefits of hydraulic ram pumps? =====
  
 A hydram is an environmentally-sound solution for water pumping. The main benefit is that they don’t require a power source, therefore avoiding the pollution and carbon emissions associated with power generation. A hydram is an environmentally-sound solution for water pumping. The main benefit is that they don’t require a power source, therefore avoiding the pollution and carbon emissions associated with power generation.
Line 94: Line 95:
  
  
-## What can I do?+===== What can I do? =====
  
 First make sure your site conditions suit a hydram. There has to be a fall from the originial water source, and a way to get the excess water back into the water course. So a steep hill stream is good, and on lower ground, maybe a waterfall or a bend in a river, with a fall to either the same water course or a different one. In some cases, the hydram can be located in a pit to allow an adequate fall, although excess water must be allowed to drain back to the source at a lower level somehow. The minimum fall from the top of the feed well down to the waste pipe from the pump is 1.1 metres. Water can be delivered to much greater heights than the fall to the pump. First make sure your site conditions suit a hydram. There has to be a fall from the originial water source, and a way to get the excess water back into the water course. So a steep hill stream is good, and on lower ground, maybe a waterfall or a bend in a river, with a fall to either the same water course or a different one. In some cases, the hydram can be located in a pit to allow an adequate fall, although excess water must be allowed to drain back to the source at a lower level somehow. The minimum fall from the top of the feed well down to the waste pipe from the pump is 1.1 metres. Water can be delivered to much greater heights than the fall to the pump.
Line 129: Line 130:
 </figure> </figure>
 </WRAP> </WRAP>
-### Installation+==== Installation ====
  
 See the diagram above. You’ll need concrete pads for the feed well (which could be a concrete-lined pit or a large plastic barrel) and to bolt the pump to. The feed well can be at a distance from the source, and needs a roof to keep out debris (the pump itself doesn’t necessarily need a cover). See the diagram above. You’ll need concrete pads for the feed well (which could be a concrete-lined pit or a large plastic barrel) and to bolt the pump to. The feed well can be at a distance from the source, and needs a roof to keep out debris (the pump itself doesn’t necessarily need a cover).
Line 167: Line 168:
 </WRAP> </WRAP>
  
-### Build your own+==== Build your own ====
  
 You can build your own hydram, although you’re not going to get near the efficiency of a manufactured pump, and won’t last anywhere near as long. But they’re cheap and easy to build, and you can check that a hydram works well in your location before investing in a manufactured pump. You can build your own hydram, although you’re not going to get near the efficiency of a manufactured pump, and won’t last anywhere near as long. But they’re cheap and easy to build, and you can check that a hydram works well in your location before investing in a manufactured pump.
Line 188: Line 189:
 </WRAP> </WRAP>
  
-### Maintenance+==== Maintenance ====
  
 You’ll need to change some fittings, such as the rubber valves, maybe every couple of years. One or two other fittings may need to be replaced every 10 years or so. It’s not arduous. Easy to take apart – no specialist skills needed. You’ll need to change some fittings, such as the rubber valves, maybe every couple of years. One or two other fittings may need to be replaced every 10 years or so. It’s not arduous. Easy to take apart – no specialist skills needed.
Line 197: Line 198:
  
  
-## Further resources+===== Forum ===== 
 + 
 +This topic belongs to the section [[gt:gardening|Gardening, smallholding & farming]]. You can ask questions or add information on the corresponding [Forum section](https://forum.growingthecommons.org/t/gardening). 
 + 
 +It is also in the section [[gt:water|Water & sewage]] (Forum: [Water & sewage](https://forum.growingthecommons.org/t/water)). 
 + 
 +===== Further resources =====
  
 - [Appropedia](https://www.appropedia.org/Hydraulic_Ram_pump) - hydraulic ram pump - [Appropedia](https://www.appropedia.org/Hydraulic_Ram_pump) - hydraulic ram pump
Line 207: Line 214:
  
  
 +===== Related topics =====
 +
 +- [[livs:livestock|Keeping livestock]]
 +- [[plum:Plumbing]]
 +- [[wipm:Wind pumps]]
 +- [[watr:water|Low-impact water supply]]
  
  
-## Related topics 
  
  
-## Specialist curators of this topic+===== Specialist curators of this topic =====
  
  
  • hram/hydraulic_ram_pumps.1773146458.txt.gz
  • Last modified: 2026/03/10 12:40
  • by 127.0.0.1