Continued from page 1
This unit projects water out from wall in a clear and even arc, re-entering water approximately 200mm away from wall providing a dramatic, lively effect. This involves senses and proves difficult for even most staid personality to resist urge to reach out and play with curtain of water produced by this unit. Further enrichment is accomplished with use of lighting at night. A simple submersible spotlight positioned under curtain of water is all that is required.
This unit should not be installed any higher than 1.2m above surface of water in catchment reservoir. The water will begin to break up if installed any higher. A high-flow projecting waterfall is available which may be installed up to 2.0m high (please enquire).
This unit requires approximately 7200 litres per hour per metre width. This should produce a film of water approximately 5mm thick. Some adjustment in flow is achievable with use of an inline value. See examples 1 & 2 for further explanation.
Rectangular Statue ponds are recommended for use with a Projecting Water Wall as catchment reservoir needs to protrude at least 500mm from wall to avoid losing too much water from splash.
The pump required is governed by flow requirement and head height (ie. ie. height at which waterfall is installed above surface of water in catchment reservoir).
Example 1:- Installing a 1.0m Projecting Water Wall at a head height of 1.0m
This unit has a flow requirement of 7200 litres per hour (7200 (litres) x 1 (metre)) therefore requires a pump that will supply 7200 lph at 1.0m high. Check pump performance charts to find a pump that will supply this flow at required height. In this example a Seerose UP150 will push 7740 lph at 1.0m high and is therefore suitable. Example 2:- Installing a 0.8m Projecting Water Wall at a head height of 0.5m
This unit has a flow requirement of 5760 litres per hour (7200 (litres) x 0.8 (metres)) therefore requires a pump that will supply 5760 litres at 0.5m high. Check pump performance charts to find a pump that will supply this flow at required height. In this example a Seerose UP120 Fountain Pump will push 6840 lph at 0.5m high and is therefore suitable. TIP It is always better to ‘oversize’ pump rather than to purchase a pump that will only just suit. Allowances need to be made for loss of flow through tubing and fittings. It is far more practical to buy a pump larger than required and restrict output buy a valve, as it is impossible to get more performance than maximum specified on any particular pump.
Danielle Dickinson is an avid water feature enthusiast. She is a regular contributor to Gardening Magazines. Visit her website http://www.waterfeaturesonline.com.au for more information on building and maintaining any type of Water Feature as well as a huge range of water gardening products.