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620R continuous tubing, two rollers pumpheads: flow ranges, 0.1-265 rpm
GPM
liters/min
GPM
liters/min
GPM
liters/min
GPM
liters/min
Tube bore mm
Tube bore in
Tube number
6.4
1
/
4
17
6.4
1
/
4
17
9.6
3
/
8
193
9.6
3
/
8
193
12.7
1
/
2
88
12.7
1
/
2
88
15.9
5
/
4
189
15.9
5
/
4
189
Marprene
®
TL
0.0003-0.9
0.001-3.4
0.001-1.7
0.003-6.6
0.001-2.9
0.004-11
0.003-3.2
0.01-12
Pumpsil
®
0.0003-0.8
0.001-3.2
0.001-1.9
0.003-7.2
0.001-2.9
0.004-11
0.003-4.0
0.01-15
Sta-Pure
®
0.0003-0.8
0.001-3.2
0.001-1.7
0.003-6.6
0.001-2.9
0.004-11
0.003-4.2
0.01-16
Construction materials:
All 620 pumpheads are designed for ultimate impact and corrosion resistance. Pumphead track: powder coated
aluminum LM24; guard, inner/outer: Grillamid TR55/Polyurethane PBA; rotor hub, roller arms: Fortron 1140L4 (PPS); rotor cover: DuPont Hytrel
G5544; rollers, main/guide: stainless steel/nylatron; main roller bearings: carbon steel; continuous tube clamp set: polypropylene
Pulp & Paper
Precise, consistent, repeatable flow rates and minimal maintenance are the
primary reasons why Boise Cascade switched from diaphragm pumps to
Watson-Marlow Bredel peristaltic pumps for dye addition.
Overall shade losses at the Oxford Specialty Papers Division were costing as
much as 60 tons of off-quality paper a month. In addition, stripping, cleaning
and repair of the diaphragm pumps were causing excessive downtime and
lost productivity.
Since installing the Watson-Marlow Bredel pumps, losses due to color
irregularities have been negligible and productivity has increased substantially.
Maintenance now consists of only scheduled tubing changeovers which take
only minutes.
NOW SELECT
YOUR DRIVE
PAGES 14-15
620 pumpheads: flow ranges, 0.1-265 rpm
620RE two rollers pumpheads
620RE4 four rollers pumpheads
GPM
liters/min
GPM
liters/min
GPM
liters/min
GPM
liters/min
Element bore, mm
Element bore, inch
Cam and Groove connector size, inch
12.0
15
/
32
3
/
4
12.0
15
/
32
3
/
4
17.0
11
/
16
3
/
4
17.0
11
/
16
3
/
4
12.0
15
/
32
3
/
4
12.0
15
/
32
3
/
4
17.0
11
/
16
3
/
4
17.0
11
/
16
3
/
4
Marprene
®
TL
(elements to 30 psi)
0.001-2.6
0.004-9.8
0.003-4.8
0.01-18
0.001-2.2
0.003-8.3
0.001-3.2
0.005-12
Marprene
®
TM
(elements to 60 psi)
0.001-2.6
0.004-9.8
0.003-4.2
0.01-16
0.001-2.2
0.003-8.3
0.001-2.9
0.004-11
Pumpsil
®
(elements to 30 psi)
0.001-2.6
0.004-10
0.003-4.2
0.01-16
0.001-2.3
0.003-8.7
0.001-2.9
0.004-11
Sta-Pure
®
(elements to 60 psi)
0.001-2.9
0.004-11
0.003-4.8
0.01-18
0.001-2.4
0.003-9.0
0.003-3.4
0.01-13
GPM with pressures to 60 psi
11
Note: beige portion of graphs refers to limit of 30 psi below 50 rpm