1.
Case Study
Replacing Your
Old
Southern Cross
Column Pipe

2.
Replacing Your Old Southern Cross
Column
With
PVC Column
Case Study

3.
The Problem
Your steel Southern Cross column
has been in the ground for 10-30
years and the pump pressure and
water supply has been dropping
constantly.

4.
The Problem
The pump is pulled up and the
column is found to have corroded
away and has holes everywhere and
in spots only rust is holding it
together.

5.
The Problem
In some instances steel pump column
has corroded in a time frame of less
than 2 years.

6.
The Problem
If the column is replaced by steel again
the same occurrence will happen in the
same time and the process will just be
repeated.

7.
The Problem
You try to find spare parts for your
Southern Cross pump, with no luck,
or a price that flawed you.

8.
The Problem
Unfortunately no other pump
manufacturer used 11 tpi left hand
column thread.

9.
REQUIREMENTS
To have a lifetime of plus 10 years
Corrosion resistance
Pump the same amount of water as
originally

10.
REQUIREMENTS
To withstand the Installation depth.
Use standard shafts, original if possible.
Use standard tools for assembly

11.
REQUIREMENTS
Connect to your Southern cross
discharge head and column thread on
your pump.

12.
SOLUTIONS
The solution is to use replace the old
corroded steel column with a non-
corrosive material.

13.
SOLUTIONS
The new column to be the same length
as the original column so the column
shaft can be re-used.

14.
DEPS Answer
To manufacture and supply new column
made from PVC, which is noncorrosive
and its integrity is strong enough to
withstand the bore installations depth.

15.
DEPS Answer
The column will have the same overall
length as the original, so that the
column shaft can be reused.

16.
DEPS Answer
Stainless or Bronze adaptors are
manufactured so the Pvc column will fit
the discharge head and the pump
discharge thread.

17.
Alternatives
Other Alternatives where to use
fibreglass column, this has to be
imported or manufactured, with a lead
time of over many months.

18.
Alternatives
Stainless pipe could be used, but is very
expensive.
Steel column can be painted with a
epoxy paint or dipped,
Keep replacing every few years.

19.
REQUIREMENTS
Connect to your Southern cross
discharge head and column thread on
your pump.

20.
The End Result
The specialized Pvc column was
delivered on time and successfully
installed by the pump installer.

21.
The End Result
After having the Pvc column in the
ground for over 2 years it was pulled up
and inspected, there was no sign of any
issues.

22.
The End Result
Pvc column has been used for over 12
years now and there has not been an
issue with this product failing

23.
Thank you for taking the time to look at the information we have
created for you,
We hope this will be of assistance to solving your piping, drainage ,
cleaning and drilling challenges.
If you have any more questions
Please feel free to contact myself or one of our team
Bore Casing & Screens Pipes & Components Environmental Drilling Water Treatment Safety Products Sand Spears Pumps
1300 133 000 0457 819 610 www.deps.com.au

24.
Bore Casing & Screens Pipes & Components Environmental Drilling Water Treatment Safety Products Sand Spears Pumps
1300 133 000 0457 819 610 www.deps.com.au
• For more Information
• go to www.deps.com.au
• 0r contact us on
• 1300 133 000
• 0457 819 610
• askus@deps.com.au

25.
Bore Casing & Screens Pipes & Components Environmental Drilling Water Treatment Safety Products Sand Spears Pumps
1300 133 000 0457 819 610 www.deps.com.au
Deps Products
& Capabilities

26.
Bore Casing & Screens Pipes & Components Environmental Drilling Water Treatment Safety Products Sand Spears Pumps
1300 133 000 0457 819 610 www.deps.com.au
Solving your Piping, Drilling, Water and Drainage
Challenges
with Trust and Integrity