Pentair STA-RITE - Suction Lift Applications

6547 0412
Installation 6
For Suction Lift Applications
• 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.
Risk of suction entrapment.
Suction screen must beused.
• 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.
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