Suction Lift Example

Specifics:

Pond Size: 3000 Gallons
Pump Location: Above water level
Filter: Biological
Desired turn over is once an hour
Plant pond and waterfall

Koi Application #1

Flow: 3000 gallons ÷ 1 hour = 3000 gph

Head: (See Diagram Below)
    Static Head - Discharge head: 9.0 feet
    Suction Head - 2 feet
    Total Static Head - 11 feet

Friction head:
Discharge Pipe:                     1.5 feet
                                            6.0 feet
                                            8.0 feet
                                            1.0 feet
                                            12.0 feet - Equivalent length for two 90° elbow @ 6’ each
                                         + 1.5 feet - Equivalent length for one value @ 1.5’ each
Total discharge pipe length = 30.0 feet when using 2" PVC

Suction pipe:                      3.0 feet
                                         8.0 feet
                                         0.6 feet
                                         0.2 feet
                                         6.0 feet - Equivalent length for one 90° elbow @ 6’ each
                                      + 1.5 feet - Equivalent length for one valve @ 1.5’ each
Total suction pipe length = 19.3 feet when using 2" PVC

Total Pipe Length 30.0 feet
+ 19.3 feet
49.3 feet when using 2" PVC

Locate the Plastic pipe schedule 40’ friction loss chart. The loss for 2 inch pipe with a flow of 3000 gph is 4.16 feet for every 100 feet of pipe or .0416 feet per foot of pipe.

Total foot loss: 49.3 feet
x .0416 loss per foot
Friction loss = 2.05 feet

Total dynamic head

TDH = Static head + friction losses + pressure head

TDH = (9.0 dsch + 2.0suct) + 2.05 + 0 = 13.05 foot = 13 foot

Refer to the Sequence 1000 performance chart.

Locate the intersection of 3000 gph @ 13’ head. It falls between the 5000SEQ22 curve and the 4300SEQ20 curve. Select the 5000SEQ22 curve for proper results.

Motor: 1/6 HP, TEFC, 1725 RPM
Elastomers: Buna-N
Pump Material: Polypropylene
Hardware: Stainless steel
Model # 5000SEQ22

Back to the Sequence Information page.