Plumbing: Flow Rates, Design & Balancing
Plumbing the Rock Trap
Plumb the supplied Rock Trap (25577-950-000) just before the water line reaches the waterfall inlet.
Plumbing Guidelines: Flow
The water feed line from the pump should use a minimum of 1½” PVC pipe. The feed line should terminate near the center of the waterfall at the back of the bond beam. Use a minimum of 2″ pipe for runs over 60′.
Maximum Recommended Flow Rates:
Use 1-1/2″ Pipe for 60 GPM
Use 2″ Pipe for 100 GPM
Use 2-1/2″ Pipe for 140 GPM
Use 3″ Pipe for 225 GPM
Typical Performance at 50' of Head
1/2 HP for 26 GPM
3/4 HP for 58 GPM
1 HP for 68 GPM
1-1/2 HP for 93 GPM
2 HP for 106 GPM
3 HP for 140 GPM
Plumbing Design
Use a minimum of 2” schedule 40 pipe on a dedicated pump and suctions.
VGB compliant suction covers must be used for each suction line and they must be installed 18” above the bottom of the pool. Install at least two suctions per pump as required by law.
A filter strainer is required between the pump and the waterfall. Installations requiring more than 60 gallons per minute may require two or more filters to be plumbed in parallel.
Balancing the Flow
Use multiple pumps when installing multiple waterfalls. A separate line with a 3-way valve must be used to balance the water between the water falls.
Use a 3-way valve after the pump to allow the flow to be regulated between the waterfall and the pool return. Location placement for this valve is after the filter, near the equipment pad.
Plumbing Multiple Waterfalls
When plumbing two or more waterfalls, follow all of the previous instructions with the addition of a 2-way ball valve for each waterfall.
The valve is necessary to balance the water flow between the units.
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