Revitalize your back yard garden area. Definitely a consideration for those that have water features. Built a solar powered water feature with Lewisia 1.8W Solar Water Fountain.

Specification:
Solar Panel: 6V/1.8W
Brushless pump input: DC 4.5-10V
Maximum water flowing: 170L/h
Maximum lift: 4ft / 1.2m
Maximum water height: 1.64ft / 0.5m
Cable Length: 10ft / 3m
Solar Panel Size: 6 * 5 inch / 15*12.5cm
Water Pump Size: 1.8 x 1.6 x 1.4 inch / 4.6 x 4 x 3.5 cm
Without on/off switch.

Package:
-1x Solar Panel
-1x Water Pump
-8 x Nozzles
-1x User Manual

Note:
1. Make sure that you submerge the pump in water before uncovering the panel because it starts as soon as the sun hits the panel.
If you don't want the water to splash out of the bird bath, don't put the attachments on so it's more of a bubbler.
2. Don't make the pump work without water for a long time, or its lifespan will be shortened.
3. Don't put the solar panel and the control box in water, or it will be damaged.
4. Clean the pump regularly. If it's duty, it will stop working.
5. The solar panel is made up of glass and metal. You must be careful when using it. And keep out of reach of children.
  • 2 Ways to Install the solar panel --- Stick into the ground or mount on the wall
  • Long Cable Length --- 10ft/3m cord from the pump to the solar panel so it would get sun most of the day
  • Maximum water height: 1.64ft / 0.5m. Maximum lift: 4ft / 1.2m ( Lift height is a max height the water goes up, after connecting the water pipe to the nozzle )
  • Foam filter & Filter Bag Included --- Makes regular cleaning reasonably simple, to avoid the pump getting blocked with dirt
  • Multiple Application --- Great for bird bath, fish tank, small pond, garden decoration, water circulation for oxygen, etc.

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Lewisia 1.8W Solar Water Fountain Pump for Pool Koi Pond Bird Bath Garden Decoration Solar Powered Submersible Water Pump Kit

  • Brand: Lewisia
  • Product Code: PQ08-SP018
  • Availability: 20
  • $70.19


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Dynamic Head

The effect of the Earths gravity on the "lift" or head pressure is fairly simple; for every vertical foot of distance the pump moves the water you are adding one foot of head pressure so the ratio is a 1:1 ratio. The effects of the friction, caused by water as it travels through your hose or pipes, on the total head pressure is a little more difficult to calculate especially as there are slight variations in pipe friction in different hose materials and the smoothness of the inner bore. Basically. for every ten feet of pipe through which the water has to travel travel horizontally will contribute 1 foot of head height; the ratio of the pipe friction loss is a 10:1 ratio.

Plumbing fixtures and bends and corners in your hose also increase the total head you must calculate to ensure the proper final volume from your pump. Every corner with a 90 degree elbow in your plumbing will add 1 foot of head pressure  with a 1:1 ratio. 45 degree elbows, tees and even insert couplers can all have an impact on the final flow.

If you install a pump 40 feet away from the top of your waterfall which is 6 feet above the pump and the tubing is a single run of 40 feet horizontally then you add 4 feet of head for the tubing length (the 10:1 ratio) to the 6 foot differnetial between the pump location and the final height of the waterfall so your final total dynamic head calculation would be 10 feet. This means your final volume of water flow in this water feature or application would be the volume of flow on the performance curve that equaled the gallons per hour at 16 feet. This volume will certainly be much less than the initial volume the pump can move at an open flow or a zero head.

If in the above example your 40 feet of horizontal tubing run also required 3 elbows of 90 degrees then an additional 3 feet of theoretical head would be added and your final flow result would be at 19 feet on the performance curve of the pump. In this example you would want to choose a pump that has the desired GPH rating at 9 feet of head pressure.  Tubing size is also an important factor in accounting for head pressure loss, in general you should never reduce the diameter of the tubing below what the output size of the pump is, this will drastically increase head pressure, and reduce pump performance.  For maximum pump performance, using the largest tubing that is practical is the best choice. A best practice is to use a hose with an inner diameter that is the same as your pumps outlet fitting.

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