Installation 6
For Suction Lift Applications
• Usepipe,tubing,orreinforcedhoseto
makesuctionconnection.Hosemusthave
sufficient strength to resist collapse under
the pressure differential that occurs while
pump is running.
• Suctionpipesizeshouldbeatleastone
commercial pipe size larger than opening
ofpumpinlet.Flowvelocityshouldnot
exceed 8 ft./sec.
• Suctionscreenmustscreenoutsolidsthat
could clog pump impeller.
Risk of suction entrapment.
Suction screen must beused.
• Suctionscreenareamustbeatleastfour
times suction pipe area.
• NetPositiveSuctionHeadAvailable
(NPSHA)mustexceedNetPositiveSuction
HeadRequired(NPSHR)bythepumpor
reduced performance and severe pump
damage may result.
• Allsuctionpipingmusthavecontinuous
rise to the pump suction inlet. A 1/4 inch
per foot minimum slope is recommended.
Standard or long
radius elbow.
Eccentric Reducer
flat side up.
Slope upward to pump.
For Han-Dee Primer connection, see start-up.
As close as possible
Support pipe
as required.
Pipe diameter (“D”)
Suction Gauge
4 x “D” minimum
NOTICE All connections
must be air tight.
1 x “D” minimum from bottom
See foundation section.
Suction screen prevents debris
from entering pump suction and
prevents entrapment hazard.
Foot valve maintains pump
prime after shutoff.
Straight run, short as possible but
at least 6 times pipe diameter (“D”)
after elbow to stabilize flow.
Short length of straight pipe after reducer.
(2 times pipe diameter minimum)
Recommended