Watson-Marlow Alitea 114 pumpheads: operating instructions
13
Marprene tubing, 1.6mm wall, 100 rpm, CCW rotation
Pressure tests were carried out using water at constant delivery pressure. Actual
pressures achieved may vary because of actual tube dimensions, changes in tem-
perature, viscosity, system configuration and tubing performance against time.
Direction of rotation
CCW:
The pressure / flow curves above show performance in counter clockwise
rotation. This direction is recommended for pressure applications.
CW:
Clockwise rotation optimizes the pump performance regarding tube life and
required torque. Clockwise rotation is recommended for low or no pressure applica-
tions. Suction performance and flow are the same as for CCW rotation.
Pressure and flow performance curves
Marprene tubing, 1.6mm wall, 100 rpm, CCW rotation
114DV
114DVP
114DV, 114DVP
suction (bar) pressure (bar)
0123
5
4
Flow rate: ml/min
0
20
40
70
80
100
10
30
50
60
90
-0.5
-0.3
0
-0.1
-0.2
-0.4
0.8 x 1.6
1.6 x 1.6
4.8 x 1.6
4.0 x 1.6
3.2 x 1.6
2.4 x 1.6
114DV, standard occlusion
suction (bar) pressure (bar)
0123
5
4
Flow rate: ml/min
0
20
40
70
80
100
10
30
50
60
90
-0.5
-0.3
0
-0.1
-0.2
-0.4
0.8 x 1.6
1.6 x 1.6
4.8 x 1.6
4.0 x 1.6
3.2 x 1.6
2.4 x 1.6
114DVP, +Pressure occlusion
