Pentair Berkeley Manual Del Usuario página 9

Installation • Suction Connection
Suction Lift
No support or
uneven mounting
not recommended.
• Suction pipe sloping downward to pump inlet will trap
air which will reduce performance and may cause
pump to lose prime.
• Suction piping that is undersized will create excess
friction losses that may cause cavitation and a
reduction in pump performance.
• Excess fittings and bends in suction line results in
trapped air, reduced performance, and high friction
losses which may cause cavitation.
Do not use
Concentric
Reducer.
Excess use of pipe fittings
means potential air leaks.
Elbow immediately in
front of pump intake
not recommended.
Not Recommended
Concentric Reducer causes high spots
along the suction line resulting in air pockets.
Do not install valves
in suction line.
Long run
not recommended
Pipe diameter
("D") undersized
reduces performance
Vortex caused by
insufficient submergence
may cause pump to
lose prime.
No strainer
may cause
pump to
clog.
Unsupported
pipe causes
excessive stress
on pump and fittings.
High suction
lift should
be avoided.
Less than
4 x "D"
Insufficient bottom
clearance
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