Pump water with no electricity, no gasoline, just gravity!
Sound crazy or impossible? Don't worry, it does obey the laws of physics, but I'll try to explain the operation later. This instructable shows how to build a fairly simple water pump that needs no energy input other than water flowing from a higher point to a lower point. Most of the pump is constructed from PVC, with a couple of bronze pieces thrown in for flavor. I was able to source all of the parts from a local hardware store (Lowes) for a bit under $100.
To function, the pump does require a reasonable amount of water that will drop at least 3'-5'. The level that the pump can raise water to depends on the water's head (total drop the water will make).
This design was worked out by Clemson University.
If you like what I've done, please take the time to give it a rating, and I'd love to hear your input. Thanks!
Step 1: Bill o' Materials
Materials for the Pump
- 1-1/4" valve
- 1-1/4" tee (buy two of these)
- 1-1/4" union
- 1-1/4" brass swing check valve
- 1-1/4" spring check valve
- 3/4" tee
- 3/4" valve
- 3/4" union
- 1-1/4" x 3/4" bushing
- 1/4" pipe cock
- 100 psi gauge
- 3/4" x 6" nipple
- 4" x 1-1/4" bushing
- 4" coupling
- 4" x 24" PR160 PVC pipe
- 4" PVC glue cap
- 3/4" x 1/4" bushing
- Short (4') section of 1-1/4" PVC pipe
- Old Bicycle Innertube
Connections Note Read through the instructable and understand all the pipe-fitting connections that will happen before buying materials. The store may not have exactly what you're looking for, and you may have to improvise. I wound up getting some different parts because my local store didn't have the exact parts I was looking for. This usually appears in the form of not having a threaded fitting, but having a smooth pipe connection, or vice versa. Not a problem, you can figure it out.
- Long section of 1-1/4" PVC ("drive pipe", connects pump to water supply)
- Garden Hose (male end threads into 3/4" union, supplies pumped water)
- Bricks, blocks, rocks to prop up and anchor pump
- Shower Drain assembly (must be able to attach to 1-1/4" pipe, for attaching pipe to water supply)
- PVC Primer (I used Oatey Purple Primer)
- PVC Cement (Oatey again, just what they had)
- Teflon Thread Tape
- Measuring Tape
- Pocket Knife
- Lab gloves (keeps the chemicals on the pipe and off your hands)
- Bike Pump (to inflate the innertube)