EcoInnovation React Pump, System Design And Installation Manual, Page: 86 / 107

PowerSpout React Pump Installation
© 2019 EcoInnovation Ltd (NZ) V2.1 Page 86
The IPLEX pipe range of LDPE/MDPE/HDPE pipes 6.1.4.
This is the IPLEX pipe range. Pressure ratings are 60, 90, 125,160, 200 & 250m rated.
Iplex approx. pipes
costs:

Redline 125m rated 25mmOD (20NB) pipe $1.94 NZ/m

Redline 90m rated 32mmOD (25NB) pipe $2.04 NZ/m

Redline 90m rated 40mmOD (35NB) pipe $2.69 NZ/m
6.2. Example of the full calculation to predict pressure loss at a higher
accuracy
The example that follows will help you to work out in detail a suitable pipe size for a system
that uses just one React pump per pipe. We have a pipe efficiency target of 20% friction
loss at peak flow as a starting point.
Remember that you can vary the pipe pressure rating along the length of the run to minimise
costs. For example, if you have a 160m delivery head you start with high grade (16 bar) pipe
at the React pump, 12 bar, then 9 bar and finally 6 bar. Laying 16 bar pipe all the way can
almost double the cost of the supply pipeline to your tank. You can use the table below to
calculate the friction head ("head loss") in your pipe for a given pipe ID.
Site data (Northland NZ):

Lift to tank 80m (plus 2m height of tank =82m) + 20% for pipe friction = 98.4m.

Distance 1000m.

Summer flow requirement less than 5,000 litres/day.

Grade is relatively constant.

Initially assume pipe friction head = 20%.
From the peak flow table (right) at 100m head the React pump can
do 15 L/min (round to nearest L/min)
The table on the next page tells us how much pressure will be lost
per 100m of pipe run.
Peak
Head L/min
50 15.79
100 15.24
150 14.56
200 13.81
250 13.10
300 12.40