Xylem 580-IM Marlow Series 580 - Manual (Page 15)

Check Explanation/comment Checked
Check that you have a foot valve of equal or greater
area than the pump suction piping when you use an
open system with a suction lift.
Prevent clogging by using a strainer at the
suction inlet next to the foot valve. Make sure
that the strainer has an area three times that of
the suction pipe with a mesh hole diameter of
no less than 0.25 in. (0.64 cm).
Check that flexible piping is used on both the suction
and discharge sides of the pump when you use an
isolation base.
—
Check that a properly sized suction strainer
conforming to NSF/ANSI Standard 50 is installed in
the suction line.
Prevents clogging. Make sure the strainer has
an area three times that of the suction pipe
with a mesh hole diameter of no less than 0.25
in. (0.64 cm).
Check that the pipeline has isolation valves around
the pump and has a drain valve in the suction pipe.
—
Use Teflon tape sealer or a high quality thread sealant
when you install the suction and discharge
connections to a threaded pump housing.
—
Installation
Series 580 Installation, Operation, and Maintenance Manual 13