Watson-Marlow 520DuN IP66/NEMA 4X User Manual
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29.4 520RE Element loading
520RE tubing element pumpheads are factory-set to accept Watson-Marlow 2.4mm-
wall tubing elements. Elements fitted with either quick-release industrial connectors
or Tri-clamp sanitary connectors may be used; however,
it is vital to match the
pressure rating of the element with the pressure rating of the pumphead
so
that the correct roller-spring rate and occlusion settings are used. The pressure rat-
ing of the pumphead appears on the flexible rotor cap in the centre of the rotor. The
pressure rating of the element appears on the connector sleeve.
Note that the rotor cap and the element connector sleeve are colour-coded.
Note
: To achieve 4 bar and 7 bar pressures using a 520RE pump and the appropri-
ate rotor and element, the pump
must
rotate counter-clockwise.
Element and rotor pressure ratings
Colour of flexible rotor cap and element connector sleeve
Grey
Beige
Blue
520REL
Pressures
up to 2 bar (30 psi)
Bore sizes
3.2mm, 6.4mm and
9.6mm
520REM
Pressures
up to 4 bar (60 psi)
Bore sizes
3.2mm and 6.4mm
520REH
Pressures
up to 7 bar (100 psi)
Bore size
3.2mm
Industrial
Marprene
TL
Pumpsil
Neoprene
Chem-Sure
Sanitary
Bioprene
TL
Pumpsil
Sta-Pure
Chem-Sure
Industrial
Marprene
TM
Chem-Sure
Sanitary
Bioprene
TM
Sta-Pure
Industrial
Marprene
TH
Sta-Pure
Sanitary
Bioprene
TH
Sta-Pure
Element connectors for industrial and sanitary use
Industrial
Sanitary