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Page 10 F00633
Suction Connection
Installation
When Flooded Suction Exists
Recommended
See foundation
section.
Pump driven by remote
power source, direct
coupling or pulley/belt
connection.
2214 0196
Water under
pressure
Support pipe
as required
Short run of straight pipe after
reducer (2 times pipe diameter).
Eccentric Reducer
flat side up.
Isolation Valve
full open when
pumping.
Standard or
long radius
elbow.
Suction
Gauge
Straight run, short as possible but
at least 6 times pipe diameter after
pipe fitting to stabilize flow.
Slope upward to pump.
Maintain minumum
liquid level to prevent
vortexing.
• Use pipe, tubing, or reinforced hose to make suction
connection. Hose must have sufficient strength to
resist collapse under the atmospheric pressure
differential that may occur while pump is running.
• It is important, even with a flooded suction condition,
that proper pipe fittings are used so water is delivered
to impeller eye with a smooth flow and consistent
velocity.
• Suction pipe size should be at least one commercial
pipe size larger than opening of pipe inlet. Flow
velocity should not exceed 8 ft./sec.
• An isolation valve is used in a pressurized suction
pipe to permit servicing pump.
• Piping run and connection fittings should be properly
aligned and independently supported to reduce strain
on pump case.
• If solids are present, a strainer should be used to
protect the pump.