Keyline Designs

Water for Every Farm - Yeomans Keyline Plan

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Lockpipe System: Information and Ordering Fittings

A Keyline Dam Wall (cross sectional view)

The above diagram shows the cross section of the wall of a farm dam fitted with a Lockpipe.
The Lockpipe consists of: a pipeline with an inflow

Features of the wall in the above diagram:
• The kahki coloured fill represents the undisturbed material under the wall.
• The water is on the left side.
• The inside batter (slope of the wall) is 1 in 3 and an outside batter is 1 in 2.5
• The wall is 8 metres high. This is measured vertically between the crest down to natural surface by the outside toe of the wall (in this case by the valve).
• The crest (width on top) is 4 metres.
• The Lockpipe is 48 metres long and 300 mm in diameter.
• The pipeline consists of four lengths of flanged pipe; each is twelve metres long.
• Two (2) of the ten baffle plates are used in the core trench and six (6) are used between the core and the inlet. Two (2) other baffle plates support the remainder of the pipe.
• The intake for a Flota-filter is suspended by a float about a metre below the top water level.
• A Keyline pattern irrigation channel (trench) is shown on the right side. It is positioned far enough away from the main valve to enable vehicle access past the wall above the channel. Note: One (1) Cone Strainer and Ten (10) Baffle plates pairs are recommended for each dam. (ie 20 plate halves)
  

  Baffle Plates

  The dimentions of baffle plates for pipe diameters from 324 mm to 457 mm OD (12 to 18 inch nominal) are 1200 x 800 x 3 mm. Standard baffle plates are made of black steel. Galvanising is optional. PVC or Polyethylene baffles are sometimes used. The image above shows a steel baffle fitted to 300 mm steel pipe. Baffle plates prevent water leaking along the outside of the pipe. Silicon sealant is used around the pipe and between the two baffle plate halves, which are bolted together. Usually ten baffles plates are used. Back to Dam TAB down to order.
  Each Baffle Plate pair is AU $110 plus freight. Includes bolts, nuts and silicon sealent.

  Please select your requriements from the drop down boxes:
  (1) Number of Baffle Plate pairs . . . (2) Outside Diameter of the pipeline . . . .
  
           None (open this drop down list to order)
           3   pairs of baffle plates
           10 pairs of baffle plates (5% discount)
           20 pairs of baffle plates (10% discount)
           30 pairs of baffle plates (20% discount)
  
                
           324 mm diameter (12 inch); $110.00  
           406.4 mm diameter (16 inch); $110.00  
           457 mm diameter (18 inch); $110.00
           610 mm diameter (24 inch); $175.00
           For other diameter use text area below.
           
  
  Prices include GST (Australian Goods & Services Tax)
  
  
  Cone Strainers
  Cone strainers are fitted to the inlet of each Lockpipe System. 
  
  
  They provide a coarse filter with a large surface area to minimise pipe blockage 
  through sediment, wall slip and flood debris. 
  The cone strainer also induces laminar flow into the main pipeline and so maximise 
  the flow rate through the Lockpipe. 
  The Flota-filter pipe passes through the large socket visible in the lower part 
  of the filter. 
  A flange, usually Table D or E, is used to bolt the Cone Strainer to the pipeline. 
  Back to Dam TAB down to order. 
  
  How many Cone Strainers ...            Outside diameter of the pipeline:
  
           None (open this drop down list to order)
           ONE (1) Cone strainer 
           TWO (2) Cone strainers
           THREE (3) Cone strainers      
  
                
           324 mm diameter (12 inch) $770
           406.4 mm diameter (16 inch) $850
           457 mm diameter (18 inch) $885
           610 mm diameter (24 inch) $776 (no flange)
           For other diameters "TAB" down and use text box.
           
  
  Prices include GST (Australian Goods & Services Tax)
  
  
  
  
  Please advise of your specific requirements. 
  The above drop down lists are optional...
      
  
  Goods will only be produced once payment is made.  Any prices changes will be advised prior to production. 
  Credit card payments get the process started quickly.
  
  If you don't want to send your credit card details through the net, 
  you can still fill in this order form and send it.  
  
  Then fax the credit card details to our secure fax number or mail to our PO Box.
  International Fax: + 61 7 5527 0847   in Australia Fax: 07 5527 0847
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  Flota-filter

  A Flota-filter enables water to be drawn from near the surface of the dam and delivered through the main pipeline. The upper layers of water are more suitable for stock and domestic requirements.

  Between irrigations, the water trapped in the main pipeline tends to become stale and soon develops an offensive odour. This stale water is quickly flushed away when the Lockpipe is turned on for irrigation. However, for stock or domestic requirements the water is drawn off relatively slowly. Consequently water in the main Lockpipe soon becomes unsuitable for stock.

  The Flota-filter System delivers water through a second, much smaller, pipeline running inside the main pipeline. The stale water in the lockpipe system remains isolated. The smaller pipeline extends beyond the cone strainer up into the pond area of the dam. Its inlet is fitted with a filter attached by rope or chain to a float. The Flota-filter draws cool fresh water from a metre or so below the surface of the dam. The actual depth is controlled by the length of the rope or chain.

  The discharge end of the Flota-filter pipeline is attached to a socketed elbow fitting that passes through the wall of the main lockpipe just before the valve. On the outside end of this socket is fitted a suitable valve. The pipeline to stock or domestic outlets may be connected to this valve.

  The Flota-filter pipeline is usually about 50 mm in diameter. The section of the Flota-filter pipeline that passes through the Lockpipe must be relatively rigid. Flexible pipe like black poly-pipe (polyethylene) has proven unsuitable. Back to Dam

  

  Counter started April 2000 You are visitor number:

  Keyline Designs
  P.O. Box 3289 Southport Queensland 4215 AUSTRALIA
  Phone: +61 (0) 7 5591 6281 Fax: +61 (0) 7 5527 0847
  Mobile: +61 (0) 4 1874 5120

  Yeomans Keyline Designs / webmaster@keyline.com.au / revised 12 Nov 2003

  "Keyline" is a Registered Trade Mark(™)

  © 2000 Keyline Designs

  

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