Centrifugal Pump Suction Connection - Pentair BERKELEY Manual Del Usuario

Installation • Centrifugal Pump Suction Connection
See foundation
section.
• Use pipe, tubing, or reinforced hose to make
suction connection. Hose must have sufficient
strength to resist collapse under the pressure
differential that occurs while pump is running.
• Suction pipe size should be at least one commercial
pipe size larger than opening of pump inlet. Flow
velocity should not exceed 8 ft./sec.
• Suction screen must screen out solids that could
clog pump impeller.
• Suction screen area must be at least four times
suction pipe area.
• Net Positive Suction Head Available (NPSHA)
must exceed Net Positive Suction Head Required
(NPSHR) by the pump or reduced performance and
severe pump damage may result.
• All suction piping must have continuous rise to the
pump suction inlet. A 1/4 inch per foot minimum
slope is recommended.
See Pages 10 and 11 for
Swimming Pool Installation requirements.
Short length of straight pipe after reducer.
( 2 times pipe diameter minimum )
Eccentric Reducer
flat side up.
NOTICE: All connections
must be air tight.
Recommended
For Han-Dee Primer
Suction
connection, see start-up.
Gauge
Straight run, short as possible but
at least 6 times pipe diameter ("D")
after elbow to stabilize flow.
Support pipe
as required
Pipe diameter ("D")
1 x "D" minimum
from bottom
Standard or long
radius elbow.
Slope upward
to pump.
As close
as possible
4 x "D"
minimum
Strainer prevents debris
from entering pump
suction and prevents
entrapment hazard.
Strainer / Foot Valve
To keep debris from entering
Foot valve maintains
pump suction and to maintain
pump prime after shutoff.
pump prime after shut-off.
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