Step 5: Connect air source to Valve No.5 (see Figure No.1 and Figure No.4 and fill bladder with air (10 PSI maxi-
mum) through Valve No. 5 while displacing water through Valve No. 4. Continue until 25% of the water
volume (10% for a horizontal unit) has been displaced.
Water volume is to be measured with the 55 gallon drum.
Step 6: When the required water volume has been displaced, close ¼” shut-off valve on the air regulator to trap air
inside the bladder, disconnect the air supply, and close Valve No. 4.* Remove the air regulator.
A 10 PSI air bubble has now been formed within the bladder. This lifts the excess bladder material off the
bottom of the vessel, allowing for uniform expansion of the bladder as the concentrate is pumped in.
Step 7: Prime and connect the concentrate pumping apparatus (see Figure No. 2 and 4) to Valve No. 7, as shown
above. Use a Centrifugal Pump only.
Step 8: Remove the water hose from the 55 gallon drum, and terminate to drain.
Step 9: Start the concentrate pump, open Valve No. 4, then Valve No. 7, pumping concentrate into bladder.
• If Valve No. 4 is left open at this point, water will continue to flow out, reducing the pressure in the bladder.
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