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F00633 Page 9
Suction Connection
Installation
Suction Lift
Do not use
Concentric
Reducer.
Concentric Reducer causes high spots
along the suction line resulting in air pockets.
Do not install valves
in suction line.
Long run
not recommended
Unsupported
pipe causes
excessive stress
on pump and fittings.
Excess use of pipe fittings
means potential air leaks.
No support or
uneven mounting
not recommended.
Pipe diameter
("D") undersized
reduces performance
High suction
lift should
be avoided.
Less than
4 x "D"
Vortex caused by
insufficient submergence
may cause pump to
lose prime.
No strainer
may cause
pump to
clog.
Insufficient bottom
clearance
Elbow immediately in
front of pump intake
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.
Not Recommended